Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out parts of the config parsing code to make
the parent function easier to read.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Currently the job name corresponds to the disk the job belongs to. For
jobs which will not correspond to disks we'll need to track the name
separately.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the data is per-job, we don't really need to bother with
finishing the synchronous job handling if the job is already terminated.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than storing the presence of the blockjob in a flag we can bind
together the lifecycle of the job with the lifecycle of the object which
is tracking the data for it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Instead of passing in the disk information, pass in the job and name the
function accordingly.
Few callers needed to be modified to have the job pointer handy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The processing function modifies the job state so it should make sure
that the variable holding the new state is cleared properly and not the
caller. The caller should only deal with the job state and not the
transition that happened.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The job error can be safely accessed in the job structure, so we don't
need to propagate it through qemuBlockJobUpdateDisk.
Drop the propagation and refactor any caller that pased non-NULL error.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The same message is reported in 3 distinct places. Move it out into a
single function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add a field tracking the current state of job so that it can be queried
later. Until now the job state e.g. that the job is _READY for
finalizing was tracked only for mirror jobs. Add tracking of state for
all jobs.
Similarly to 'qemuBlockJobType' this maps the existing states of the
blockjob from virConnectDomainEventBlockJobStatus to
'qemuBlockJobState' so that we can track some internal states as well.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modify qemuBlockJobSyncBeginDisk to operate on qemuBlockt sJobDataPtr and
rename it accordingly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We can properly track the job type when starting the job so that we
don't have to infer it later.
This patch also adds an enum of block job types specific to qemu
(qemuBlockjobType) which mirrors the public block job types
(virDomainBlockJobType) but allows for other types to be added later
which will not be public.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Block jobs can also happen on objects which are not a disk at a given
point (e.g. the frontend was not hotplugged yet) and thus will be
eventually kept separately. Add a reference back to the disk for
blockjobs which do correspond to a disk.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If the job wasn't started, we don't need to end the synchronous job. Add
a note and drop the unnecessary calls.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than directly modifying fields in the qemuBlockJobDataPtr
structure add a bunch of fields which allow to do the transitions.
This will help later when adding more complexity to the job handling.
APIs introduced in this patch are:
qemuBlockJobDiskNew - prepare for starting a new blockjob on a disk
qemuBlockJobDiskGetJob - get the block job data structure for a disk
For individual job state manipulation the following APIs are added:
qemuBlockJobStarted - Sets the job as started with qemu. Until that
the job can be cancelled without asking qemu.
qemuBlockJobStartupFinalize - finalize job startup. If the job was
started in qemu already, just releases
reference to the job object. Otherwise
clears everything as if the job was never
started.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Extract the disk mirroring startup code from the loop into a separate
function to allow cleaner cleanup paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The field is used to note the state the job has transitioned to while
handling the blockjob state change event. Rename the field so that it's
obvious that this is the new state and not the general state of the
blockjob.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reference counting will simplify semantics of the lifecycle of the
object.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When cancelling job after a reconnect we can now use the disk block job
state rather than having to re-detect it in the migration code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that we reprobe the status of blockjobs when reconnecting in
addition to handling job status events, the status reprobing can be
removed as we always track the correct status internally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Block job state was widely untracked by libvirt across restarts which
was allowed by a stateless block job finishing handler which discarded
disk state and redetected it. This is undesirable since we'll need to
track more information for individual blockjobs due to -blockdev
integration requirements.
In case of legacy blockjobs we can recover whether the job is present at
reconnect time by querying qemu. Adding tracking whether a job is
present will allow simplification of the non-shared-storage cancellation
code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Internally we do a 'block-copy' to accomodate non-shared storage
migration but the code did not fill in that the block job was active on
the disk when starting the copy job. Since we handle block jobs finishes
regardless of having it registered it's not a problem but soon will
become one.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuBlockJobEventProcessLegacy was getting too big. Remove handling of
completed jobs in a separate function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This will handle blockjob finalizing for the old approach so rename it
accordingly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'cleanup' label was accessed only from a jump to 'error'. Consolidate
everyting into 'cleanup'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Struct qemuDomainDiskPrivate was holding multiple variables connected to
a disk block job. Consolidate them into a new struct qemuBlockJobData.
This will also allow simpler extensions to the block job mechanisms.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The blockjob module uses 'qemuDomainAsyncJob' in it's public headers.
As I plan adding a new structure containing job data which will need to
be included in "qemu_domain.h" it's necessary to break the circular
dependency.
Convert 'qemuDomainAsyncJob' type to 'int' as it's an enum.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All the public APIs of the qemu_blockjob module operate on a 'disk'.
Since I'll be adding APIs which operate on a job later let's rename the
existing ones.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function is now only called locally. Some code movement was
necessary to avoid forward declarations.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace use of qemuBlockJobEventProcess with the general helper. A small
tweak is required to pass in the 'type' and 'status' of the job via the
appropriate private data variables.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The event reports the disk path to identify the disk which makes sense
only for local disks. Additionally network backed disks like NBD don't
need to have a path so the callback would return NULL.
Report VIR_DOMAIN_EVENT_ID_BLOCK_JOB only for non-empty local disks.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Put the emitting of VIR_DOMAIN_EVENT_ID_BLOCK_JOB and
VIR_DOMAIN_EVENT_ID_BLOCK_JOB_2 into a separate function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Instead of copying the default default values upfront
and then wondering whether the user has given us a new default,
leave the per-usage TLS certdirs and secrets empty during
parsing and only fill them afterwards if they weren't provided
by the user.
This means that instead of looking whether the specific certdir
paths match the default default, the Validate function (which
is called in between parsing and setting the defaults) can error
out for missing directories if the value is present, because
it must've come from the user.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Introduce a set of bool variables with the 'present' suffix
to track whether the value was actually specified.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Turns out, that there are few bugs that are not that trivial to
fix (e.g. around block jobs). Instead of rushing in not
thoroughly tested fixes disable the feature temporarily for the
release.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
When commit 1d94b3e7 added code to walk the [n]hostdevs list looking
to add shared hostdevs, it should've filtered any hostdevs that were
not SCSI hostdev's.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The session daemon is unable to set XATTRs in 'trusted'
namespace because it doesn't run as privileged process.
Therefore, when creating the default qemu config enable
rememberOwner only when running as privileged process.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since its introduction in commit 0977b8aa07 (released in v1.2.14)
qemuAgentGetInterfaces calls qemuAgentCommand with needReply=false,
which allows qemuAgentCommand to return 0 even when it did not get
any reply from the agent.
Set needReply to true, since we dereference it right after.
This can be hit if libvirt is waiting for an event from the agent
(e.g. shutdown) and the agent cannot reply in time (e.g. due to
the guest being shut down), as reported in:
https://bugzilla.redhat.com/show_bug.cgi?id=1663051
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
In the previous commit we are using uint64_t for storing subnet
prefix and interface id that qemu reports in
RDMA_GID_STATUS_CHANGED event. We also report them in some debug
messages. This poses a problem because uint64_t can be UL or ULL
depending on the host architecture and hence we wouldn't know
which format to use. Switch to ULL which is big enough and
doesn't suffer from the issue.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This event is emitted on the monitor when a GID table in pvrdma device
is modified and the change needs to be propagate to the backend RDMA
device's GID table.
The control over the RDMA device's GID table is done by updating the
device's Ethernet function addresses.
Usually the first GID entry is determine by the MAC address, the second
by the first IPv6 address and the third by the IPv4 address. Other
entries can be added by adding more IP addresses. The opposite is the
same, i.e. whenever an address is removed, the corresponding GID entry
is removed.
The process is done by the network and RDMA stacks. Whenever an address
is added the ib_core driver is notified and calls the device driver's
add_gid function which in turn update the device.
To support this in pvrdma device we need to hook into the create_bind
and destroy_bind HW commands triggered by pvrdma driver in guest.
Whenever a changed is made to the pvrdma device's GID table a special
QMP messages is sent to be processed by libvirt to update the address of
the backend Ethernet device.
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
These were not caught by our current regular expressions
but will be caught by the improved ones we're about to
introduce, so fix them ahead of time.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
According to the result parsing from xml, add the unarmed property
into QEMU command line:
-device nvdimm,...[,unarmed=on]
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
According to the result parsing from xml, add pmem property
into QEMU command line:
-object memory-backend-file,...[,pmem=on]
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
According to the result parsing from xml, add align property
into QEMU command line:
-object memory-backend-file,...[,align=xxx]
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This capability tracks if nvdimm has the unarmed attribute or not
for the nvdimm readonly xml attribute.
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This capability tracks if memory-backend-file has the pmem
attribute or not.
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This capability tracks if memory-backend-file has the align
attribute or not.
Signed-off-by: Luyao Zhong <luyao.zhong@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Before launching a SEV guest we take the base64-encoded guest owner's
data specified in launchSecurity and create files with the same content
under /var/lib/libvirt/qemu/<domain>. The reason for this is that we
need to pass these files on to QEMU which then uses them to communicate
with the SEV firmware, except when it doesn't have permissions to open
those files since we don't relabel them.
https://bugzilla.redhat.com/show_bug.cgi?id=1658112
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Since SEV operates on a per domain basis, it's very likely that all
SEV launch-related data will be created under
/var/lib/libvirt/qemu/<domain_name>. Therefore, when calling into
qemuProcessSEVCreateFile we can assume @libDir as the directory prefix
rather than passing it explicitly.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Because missing optional storage source is not error. The patch
address only local files. Fixing other cases is a bit ugly.
Below is example of error notice in log now:
error: virStorageFileReportBrokenChain:427 :
Cannot access storage file '/path/to/missing/optional/disk':
No such file or directory
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Every time we call all domain stats for inactive domain with
unavailable storage source we get error message in logs [1]. It's a bit noisy.
While it's arguable whether we need such message or not for mandatory
disks we would like not to see messages for optional disks. Let's
filter at least for cases of local files. Fixing other cases would
require passing flag down the stack to .backendInit of storage
which is ugly.
Stats for active domain are fine because we either drop disks
with unavailable sources or clean source which is handled
by virStorageSourceIsEmpty in qemuDomainGetStatsOneBlockFallback.
We have these logs for successful stats since 25aa7035d (version 1.2.15)
which in turn fixes 596a13713 (version 1.2.12 )which added substantial
stats for offline disks.
[1] error message example:
qemuOpenFileAs:3324 : Failed to open file '/path/to/optional/disk': No such file or directory
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Introduce caching whether /dev/kvm is usable as the QEMU user:QEMU
group. This reduces the overhead of the QEMU capabilities cache
lookup. Before this patch there were many fork() calls used for
checking whether /dev/kvm is accessible. Now we store the result
whether /dev/kvm is accessible or not and we only need to re-run the
virFileAccessibleAs check if the ctime of /dev/kvm has changed.
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
QEMU can report how many times during post-copy migration the domain
running on the destination host tried to access a page which has not
been migrated yet.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The QEMU command line arguments are very long and currently all written
on a single line to /var/log/libvirt/qemu/$GUEST.log. This introduces
logic to add line breaks after every env variable and "-" optional
argument, and every positional argument. This will create a clearer log
file, which will in turn present better in bug reports when people cut +
paste from the log into a bug comment.
An example log file entry now looks like this:
2018-12-14 12:57:03.677+0000: starting up libvirt version: 5.0.0, qemu version: 3.0.0qemu-3.0.0-1.fc29, kernel: 4.19.5-300.fc29.x86_64, hostname: localhost.localdomain
LC_ALL=C \
PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin \
HOME=/home/berrange \
USER=berrange \
LOGNAME=berrange \
QEMU_AUDIO_DRV=none \
/usr/bin/qemu-system-ppc64 \
-name guest=guest,debug-threads=on \
-S \
-object secret,id=masterKey0,format=raw,file=/home/berrange/.config/libvirt/qemu/lib/domain-33-guest/master-key.aes \
-machine pseries-2.10,accel=tcg,usb=off,dump-guest-core=off \
-m 1024 \
-realtime mlock=off \
-smp 1,sockets=1,cores=1,threads=1 \
-uuid c8a74977-ab18-41d0-ae3b-4041c7fffbcd \
-display none \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=23,server,nowait \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc \
-no-shutdown \
-boot strict=on \
-device qemu-xhci,id=usb,bus=pci.0,addr=0x1 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x2 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
2018-12-14 12:57:03.730+0000: shutting down, reason=failed
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Require that all headers are guarded by a symbol named
LIBVIRT_$FILENAME
where $FILENAME is the uppercased filename, with all characters
outside a-z changed into '_'.
Note we do not use a leading __ because that is technically a
namespace reserved for the toolchain.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This introduces a syntax-check script that validates header files use a
common layout:
/*
...copyright header...
*/
<one blank line>
#ifndef SYMBOL
# define SYMBOL
....content....
#endif /* SYMBOL */
For any file ending priv.h, before the #ifndef, we will require a
guard to prevent bogus imports:
#ifndef SYMBOL_ALLOW
# error ....
#endif /* SYMBOL_ALLOW */
<one blank line>
The many mistakes this script identifies are then fixed.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In many files there are header comments that contain an Author:
statement, supposedly reflecting who originally wrote the code.
In a large collaborative project like libvirt, any non-trivial
file will have been modified by a large number of different
contributors. IOW, the Author: comments are quickly out of date,
omitting people who have made significant contribitions.
In some places Author: lines have been added despite the person
merely being responsible for creating the file by moving existing
code out of another file. IOW, the Author: lines give an incorrect
record of authorship.
With this all in mind, the comments are useless as a means to identify
who to talk to about code in a particular file. Contributors will always
be better off using 'git log' and 'git blame' if they need to find the
author of a particular bit of code.
This commit thus deletes all Author: comments from the source and adds
a rule to prevent them reappearing.
The Copyright headers are similarly misleading and inaccurate, however,
we cannot delete these as they have legal meaning, despite being largely
inaccurate. In addition only the copyright holder is permitted to change
their respective copyright statement.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for nested KVM is handled via a kernel module configuration
parameters values for kvm_intel, kvm_amd, kvm_hv (PPC), or kvm (s390).
While it's possible to fetch the kmod config values via virKModConfig,
unfortunately that is the static value and we need to get the
current/dynamic value from the kernel file system.
So this patch adds a new API virHostKVMSupportsNesting that will
search the 3 kernel modules to get the nesting value and check if
it is 'Y' (or 'y' just in case) to return a true/false whether
the KVM kernel supports nesting.
We need to do this in order to handle cases where adjustments to
the value are made after libvirtd is started to force a refetch of
the latest QEMU capabilities since the correct CPU settings need
to be made for a guest to add the "vmx=on" to/for the guest config.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1624223
There are two ways to request memory preallocation on cmd line:
-mem-prealloc and .prealloc attribute for a memory-backend-file.
However, as it turns out it's not safe to use both at the same
time. If -mem-prealloc is used then qemu will fully allocate the
memory (this is done by actually touching every page that has
been allocated). Then, if .prealloc=yes is specified,
mbind(flags = MPOL_MF_STRICT | MPOL_MF_MOVE) is called which:
a) has to (possibly) move the memory to a different NUMA node,
b) can have no effect when hugepages are in play (thus ignoring user
request to place memory on desired NUMA nodes).
Prefer -mem-prealloc as it is more backward compatible
compared to switching to "-numa node,memdev= + -object
memory-backend-file".
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
So far we have two arguments that we are passing to
qemuBuildMemoryBackendProps() and that are taken from domain
private data: @qemuCaps and @autoNodeset. In the next commit I
will use one more item from there. Therefore, instead of having
it as yet another argument to the function, pass pointer to the
private data object.
There is one change in qemuDomainAttachMemory() where previously
@autoNodeset was NULL but now is priv->autoNodeset (which may be
set). This is safe to do as @autoNodeset is advisory only.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Since the code was never run, it would have been very hard to spot this
mistake, especially since the compiler can't really warn about it.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Disable external snapshot of a readonly disk for domains as
this operation is not very useful. Such a snapshot is not
possible for active domains but the error message from QEMU
is more cryptic:
error: internal error: unable to execute QEMU command 'transaction':
Could not create file: Permission denied
This error at least makes the error more understandable for
active domains and disallows for inactive domains as well.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Commit 212dc9286 made a generic qemuDomainGetIOThreadsMon which
would fail if the QEMU_CAPS_OBJECT_IOTHREAD didn't exist. Then
commit d1eac927 used that helper for the collection of all domain
stats. However, if the capability doesn't exist, then the entire
stats collection fails. Since the IOThread stats were meant to be
if available only, thus rather than failing if the capability
doesn't exist, let's just not collect the stats. Restore the caps
failure logic for qemuDomainGetIOThreadsLive.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
During qemuConnectGetAllDomainStats if qemuDomainGetStats causes
a failure, then when collecting more than one domain's worth of
statistics the loop in virDomainStatsRecordListFree would call
virDomainFree which would call virResetLastError effectively wiping
out the reason we failed leaving the caller with no idea why the
collection failed.
To fix this, let's Preserve the error and Restore it prior to return
so that a caller such as 'virsh domstats' doesn't get the generic
"error: An error occurred, but the cause is unknown".
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We are preparing a certain disk source passed in as '@src' so the
individual functions should use that rather than disk->src which
corresponds to the top level element of the chain only.
Without this change TLS and persistent reservations would not work for
backing images of a chain when using -blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function clears and frees the passed buffers on success, but not in
one case of failure. Modify the control flow that the args are always
consumed, record it in the docs and remove few pointless cleanup paths
in callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1656014
An RNG device can consists of more devices than RND device
itself. For instance, in case of EGD there is a chardev that
connects to EGD daemon and feeds the qemu with random data. When
doing RNG device removal we have to remove the associated chardev
as well.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The way that the code is currently written makes my eyes hurt.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are two functions called from syncNicRxFilterMultiMode:
virNetDevSetRcvAllMulti() and virNetDevSetRcvMulti(). Both of
them return 0 on success and -1 on error. However, currently
their return value is checked for != 0 which conflicts with our
assumptions on retvals: a positive value is still considered
success but with current check it would lead to failure.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Depending on whether QEMU actually supports the option, we can put the
'rendernode' on the '-display egl-headless' cmdline.
https://bugzilla.redhat.com/show_bug.cgi?id=1628892
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Just like for SPICE, we need to put the render node DRI device into the
device cgroup list so that users don't need to add it manually via
qemu.conf file.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Just like for SPICE, we need to put the DRI device into the namespace,
otherwise it will be left out from the DAC relabeling process.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unlike with SPICE and SDL which use the <gl> subelement to enable OpenGL
acceleration, specifying egl-headless graphics in the XML has
essentially the same meaning, thus in case of egl-headless we don't have
a need for the 'enable' element attribute and we'll only be interested
in the 'rendernode' one further down the road.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that we have QAPI introspection of display types in QEMU upstream,
we can check whether the 'rendernode' option is supported with
egl-headless display type.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We're going to need a bit more logic for egl-headless down the road so
prepare a helper just like for the other display types.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Up until now, we formatted 'rendernode=' onto QEMU cmdline only if the
user specified it in the XML, otherwise we let QEMU do it for us. This
causes permission issues because by default the /dev/dri/renderDX
permissions are as follows:
crw-rw----. 1 root video
There's literally no reason why it shouldn't be libvirt picking the DRM
render node instead of QEMU, that way (and because we're using
namespaces by default), we can safely relabel the device within the
namespace.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Guest network devices can set 'overflow' when there are a number of multicast
ips configured. For virtio_net, the limit is only 64. In this case, the list
of mac addresses is empty and the 'overflow' condition is set. Thus, the guest
will currently receive no multicast traffic in this state.
When 'overflow' is set in the guest, let's turn this into ALLMULTI on the host.
Signed-off-by: Jason Baron <jbaron@akamai.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Support for armv6l qemu guests has been added.
Tested with arm1176 CPU on x86.
Signed-off-by: Stefan Schallenberg <infos@nafets.de>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Post-copy migration has been broken on the source since commit
v3.8.0-245-g32c29f10db which implemented support for
pause-before-switchover QEMU migration capability.
Even though the migration itself went well, the source did not really
know when it switched to the post-copy mode despite the messages logged
by MIGRATION event handler. As a result of this, the events emitted by
source libvirtd were not accurate and statistics of the completed
migration would cover only the pre-copy part of migration. Moreover, if
migration failed during the post-copy phase for some reason, the source
libvirtd would just happily resume the domain, which could lead to disk
corruption.
With the pause-before-switchover capability enabled, the order of events
emitted by QEMU changed:
pause-before-switchover
disabled enabled
MIGRATION, postcopy-active STOP
STOP MIGRATION, pre-switchover
MIGRATION, postcopy-active
The STOP even handler checks the migration status (postcopy-active) and
sets the domain state accordingly. Which is sufficient when
pause-before-switchover is disabled, but once we enable it, the
migration status is still active when we get STOP from QEMU. Thus the
domain state set in the STOP handler has to be corrected once we are
notified that migration changed to postcopy-active.
This results in two SUSPENDED events to be emitted by the source
libvirtd during post-copy migration. The first one with
VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED detail, while the second one reports
the corrected VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY detail. This is
inevitable because we don't know whether migration will eventually
switch to post-copy at the time we emit the first event.
https://bugzilla.redhat.com/show_bug.cgi?id=1647365
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Both VIR_DOMAIN_FEATURE_HPT and VIR_DOMAIN_FEATURE_HTM are
handled in the exact same way, so we can remove some duplicated
code without losing any functionality.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
If migration is cancelled or confirm phase fails the domain
should be kept on the source even if VIR_MIGRATE_UNDEFINE_SOURCE
was requested.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
There are some checks done when parsing a migration cookie. For
instance, one of the checks ensures that the domain is not being
migrated onto the same host. If that is the case, then we are in
big trouble because the @vm is the same domain object used by
source and it has some jobs sets and everything so recovering
from failed cookie parsing would be needlessly hard.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The function currently takes virDomainObjPtr because it's using
both: the domain definition and domain private data.
Unfortunately, this means that in prepare phase we can't parse
migration cookie before putting incoming domain def onto domain
objects list (addressed in the very next commit). Change the
arguments so that virDomainDef and private data are passed
instead of virDomainObjPtr.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
There are several functions called in the cleanup path. Some of
them do report error (e.g. qemuDomainRemoveInactiveJob()) which
may result in overwriting an error reported earlier with some
less useful message.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1545732
Implement the QEMU driver mechanism in order to set the polling
parameters for an IOThread within the bounds specified by the
QEMU qapi parameter passing.
Based heavily on patches originally posted by Pavel Hrdina
<phrdina@redhat.com>, but modified to only handle alterations
for a running guest. For the most part the API names changed,
the typed parameters removed the poll enabled value, and the
capabilities check was moved to just before the live attempt
to set. Since changes are only supported for a running guest,
no guest XML alterations were kept.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add a capability check for IOThread polling (all were added at the
same time, so only one check is necessary).
Based on code originally posted by Pavel Hrdina <phrdina@redhat.com>
with the only changes to include the more recent QEMU releases.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Rather than passing an iothread_id, let's pass a qemuMonitorIOThreadInfo
structure so that a subsequent change to modify the iothread info can
just generate and pass one.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
We're about to add a new state "modify" and thus the function
goes from just Add/Del. Use an enum to manage.
Extracted from code originally posted by Pavel Hrdina
<phrdina@redhat.com>, but placed into a separate patch.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add functions to set the IOThreadInfo param data for the live guest.
Modify the _qemuMonitorIOThreadInfo to have a flag to indicate when
a value was set so that we don't set a value unless it was desired
to be set.
Based on code originally posted by Pavel Hrdina <phrdina@redhat.com>,
but extracted into a separate patch. Note that qapi expects to receive
integer parameters rather than unsigned long long or unsigned int's.
QEMU does save the value in larger signed 64 bit values eventually.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Process the IOThreads polling stats if available. Generate the
output params record to be returned to the caller with the three
values - poll-max-ns, poll-grow, and poll-shrink.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Separate out the fetch of the IOThread monitor call into a separate
helper so that a subsequent domain statistics change can fetch the raw
IOThread data and parse it as it sees fit.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
If there are IOThread polling values in the query-iothreads return
buffer, then fill them in and set a bool indicating their presence.
This will allow for displaying in a domain stats output eventually.
Note that the QEMU values are managed a bit differently (as int's
stored in int64_t's) than we will manage them (as unsigned long and
int values). This is intentional to allow for value validation
checking when it comes time to provide the values to QEMU.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
When metadata locking is enabled that means the security commit
processing will be run in a fork similar to how namespaces use fork()'s
for processing. This is done to ensure libvirt can properly and
synchronously modify the metadata to store the original owner data.
Since fork()'s (e.g. virFork) have been seen as a performance bottleneck
being able to disable them allows the admin to choose whether the
performance 'hit' is worth the extra 'security' of being able to
remember the original owner of a lock.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
For metadata locking we might need an extra fork() which given
latest attempts to do fewer fork()-s is suboptimal. Therefore,
there will be a qemu.conf knob to {en|dis}able this feature. But
since the feature is actually not metadata locking itself rather
than remembering of the original owner of the file this is named
as 'rememberOwner'. But patches for that feature are not even
posted yet so there is actually no qemu.conf entry in this patch
nor a way to enable this feature.
Even though this is effectively a dead code for now it is still
desired.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The TPM code currently accepts pointer to a domain definition.
This is okay for now, but in near future the security driver APIs
it calls will require domain object. Therefore, change the TPM
code to accept the domain object pointer.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add a new memoryBacking source type "memfd", supported by QEMU (when
the capability is available).
A memfd is a specialized anonymous memory kind. As such, an anonymous
source type could be automatically using a memfd. However, there are
some complications when migrating from different memory backends in
qemu (mainly due to the internal object naming at this point, but
there could be more). For now, it is simpler and safer to simply
introduce a new source type "memfd". Eventually, the "anonymous" type
could learn to use memfd transparently in a separate change.
The main benefits are that it doesn't need to create filesystem files,
and it also enforces sealing, providing a bit more safety.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
QEMU 3.1 should only expose the property if the host is actually
capable of creating hugetable-backed memfd. However, it may fail
at runtime depending on requested "hugetlbsize".
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit ("qemu_domain.c: moving maxCpu validation to
qemuDomainDefValidate") shortened the code of qemuProcessStartValidateXML.
The function is called only by qemuProcessStartValidate, in the
same file, and its code is now a single check that calls virDomainDefValidate.
Instead of leaving a function call just to execute a single check,
this patch puts the check in the body of qemuProcessStartValidate in the
place where qemuProcessStartValidateXML was being called. The function can
now be removed.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Previous patch removed the call to qemuProcessValidateCpuCount
from qemuProcessStartValidateXML, in qemu_process.c. The only
caller left is qemuDomainDefValidate, in qemu_domain.c.
Instead of having a public function declared inside qemu_process.c
that isn't used in that file, this patch moves the function to
qemu_domain.c, making in static and renaming it to
qemuDomainValidateCpuCount to be compliant with other static
functions names in the file.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Adding maxCpu validation in qemuDomainDefValidate allows the user to
spot over the board maxCpus counts at editing time, instead of
facing a runtime error when starting the domain. This check is also
arch independent.
This leaves us with 2 calls to qemuProcessValidateCpuCount: one in
qemuProcessStartValidateXML and the new one at qemuDomainDefValidate.
The call in qemuProcessStartValidateXML is redundant. Following
up in that code, there is a call to virDomainDefValidate, which
in turn will call config.domainValidateCallback. In this case, the
callback function is qemuDomainDefValidate. This means that, on startup
time, qemuProcessValidateCpuCount will be called twice.
To avoid that, let's also remove the qemuProcessValidateCpuCount call
from qemuProcessStartValidateXML.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
qemuValidateCpuCount validates the maxCpus value of a domain at
startup time, preventing it to start if the value exceeds a maximum.
This checking is also done at qemu_domain.c, qemuDomainDefValidate.
However, it is done only for x86 (and even then, in a specific
scenario). We want this check to be done for all archs.
To accomplish this, let's first make qemuValidateCpuCount public so
it can be used inside qemuDomainDefValidate. The function was renamed
to qemuProcessValidateCpuCount to be compliant with the other public
methods at qemu_process.h. The method signature was slightly adapted
to fit the const 'def' variable used in qemuDomainDefValidate. This
change has no downside in in its original usage at
qemuProcessStartValidateXML.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Adding the maxCpus value in the error message of qemuValidateCpuCount
allows the user to set an acceptable maxCpus count without knowing
QEMU internals.
x86 guests, that might have been created prior to the x86
qemuDomainDefValidate maxCpus check code (that validates the maxCpus value
in editing time), will also benefit from this change.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The commit 89563efc02 fix the
monitor error when closing the QEMU monitor. The QEMU agent
has a problem similar to QEMU monitor. So fix the QEMU agent
with the same method.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This commit adds hotplug support for PCI devices on S390 guests.
There's no need to implement hot unplug for zPCI as QEMU implements
an unplug callback which will unplug both PCI and zPCI device in a
cascaded way.
Currently, the following PCI devices are supported:
virtio-blk-pci
virtio-net-pci
virtio-rng-pci
virtio-input-host-pci
virtio-keyboard-pci
virtio-mouse-pci
virtio-tablet-pci
vfio-pci
SCSIVhost device
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Add new functions to generate zPCI command string and append it to
QEMU command line. And the related tests are added.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This patch adds new functions for reservation, assignment and release
to handle the uid/fid. If the uid/fid is defined in the domain XML,
they will be reserved directly in the collecting phase. If any of them
is not defined, we will find out an available value for them from the
zPCI address hashtable, and reserve them. For the hotplug case there
might not be a zPCI definition. So allocate and reserve uid/fid the
case. Assign if needed and reserve uid/fid for the defined case.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
We should ensure that QEMU supports zPCI when a zPCI address is defined
in XML and otherwise report an error. This patch introduces a generic
validation function qemuDomainDeviceDefValidateAddress() which calls
qemuDomainDeviceDefValidateZPCIAddress() if address type is PCI address.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The pci-root depends on zpci capability. So autogenerate pci-root if
zpci exists.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This patch provides a caching mechanism for the device address
extensions uid and fid on S390. For efficient sparse address allocation,
we introduce two hash tables for uid/fid which hold the address set
information per domain. Also in order to improve performance of
searching available value, we introduce our own callbacks for the two
hashtables. In this way, uid/fid is saved in hash key and hash value
could be any non-NULL pointer due to no operation on hash value. That is
also the reason why we don't introduce hash value free callback.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This patch introduces PCI address extension flag for virDomainDeviceInfo
and virPCIDeviceAddress. The extension flag in virDomainDeviceInfo is
used internally during calculating PCI extension flag. The one in
virPCIDeviceAddress is the duplicate to indicate extension address is
being used. Currently only zPCI extension address is introduced to deal
with 'uid' and 'fid' on the S390 platform.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
QEMU on s390 supports PCI multibus since forever.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Let's introduce zPCI capability.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Support Hyper-V Enlightened VMCS in domain config. QEMU support will
be implemented in the next patch, adding interim VIR_DOMAIN_HYPERV_EVMCS
cases to src/qemu/* for now.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
QEMU 3.1 supports Hyper-V-style PV IPIs making it cheaper for Windows
guests to send an IPI, especially when it targets many CPUs.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Support Hyper-V PV IPI enlightenment in domain config. QEMU support will
be implemented in the next patch, adding interim VIR_DOMAIN_HYPERV_IPI
cases to src/qemu/* for now.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
The function qemuDomainGetHostdevPath() is using VIR_FREE to free the
paths stored in tmpPaths. Both syntax analyzer are reporting a warning
about this. Replacing the old method to function
virStringListFreeCount() fixes the warnings/errors.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1631622
If polkit authentication is enabled, an attempt to open
the connection failed during virAccessDriverPolkitGetCaller
when the call to virIdentityGetCurrent returned NULL resulting
in the errors:
virAccessDriverPolkitGetCaller:87 : access denied:
Policy kit denied action org.libvirt.api.connect.getattr from <anonymous>
Because qemuProcessReconnect runs in a thread during
daemonRunStateInit processing it doesn't have the thread
local identity. Thus when the virGetConnectNWFilter is
called as part of the qemuProcessFiltersInstantiate when
virDomainConfNWFilterInstantiate is run the attempt to get
the idenity fails and results in the anonymous error above.
To fix this, let's grab/use the virIdenityPtr of the process
that will be creating the thread, e.g. what daemonRunStateInit
has set and use that for our thread. That way any other similar
processing that uses/requires an identity for any other call
that would have previously been successfully run won't fail in
a similar manner.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Refactoring qemuDomainGetStatsCpu, make it possible to add
more CPU statistics.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add functions for creating, destroying, reconnecting resctrl
monitor in qemu according to the configuration in domain XML.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This patch introduces a new shutdown reason "daemon" in order
to indicate that the daemon needed to force shutdown the domain
as the best course of action to take at the moment.
This action would occur during reconnection when processing
encounters an error once the monitor reconnection is successful.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
VFIO AP has a limitation on a single device per domain, however, when
commit 11708641 added the support for vfio-ap, check for this limitation
was performed as part of the post parse code. Generally, checks like that
should be performed within the driver's validation callback to eliminate
any slight chance of failing in post parse, which could potentially
result in the domain XML config vanishing.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Since we'll need to validate other models apart from VFIO PCI too,
having a helper for each model should keep the code base cleaner.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
The gotShutdown bool has been redundant since we started setting
VIR_DOMAIN_SHUTDOWN state after receiving SHUTDOWN event from QEMU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
If gotShutdown is true, the domain state cannot be running because of
the following code in qemuProcessHandleShutdown:
priv->gotShutdown = true;
VIR_DEBUG("Transitioned guest %s to shutdown state",
vm->def->name);
virDomainObjSetState(vm,
VIR_DOMAIN_SHUTDOWN,
VIR_DOMAIN_SHUTDOWN_UNKNOWN);
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
On aarch64, lauch vm with the follow configuration:
<interface type="hostdev" managed="yes">
<mac address="fa:16:3e:14:41:00"/>
<source>
<address type="pci" domain="0x0000" bus="0x01" slot="0x0b" function="0x2"/>
</source>
</interface>
libvirtd will crash when accessing net->model.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
If qemuDomainSnapshotDiscard() fails for any reason (rare,
but possible with an ill-timed ENOMEM or if
qemuDomainSnapshotForEachQcow2() has problems talking to the
qemu guest monitor), then an attempt to retry the snapshot
deletion API will crash because we didn't undo the effects
of virDomainSnapshotDropParent() temporarily rearranging the
internal list structures, and the second attempt to drop
parents will dereference NULL. Fix it by instead noting that
there are only two callers to qemuDomainSnapshotDiscard(),
and only one of the two callers wants the parent to be updated;
thus we can move the call to virDomainSnapshotDropParent()
into a code path that only gets executed on success.
Signed-off-by: Eric Blake <eblake@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Since commit v4.7.0-302-ge6d77a75c4 processing RESUME event is mandatory
for updating domain state. But the event handler explicitly ignored this
event in some cases. Thus the state would be wrong after a fake reboot
or when a domain was rebooted after it crashed.
BTW, the code to ignore RESUME event after SHUTDOWN didn't make sense
even before making RESUME event mandatory. Most likely it was there as a
result of careless copy&paste from qemuProcessHandleStop.
The corresponding debug message was clarified since the original state
does not have to be "paused" only and while we have a "resumed" event,
the state is called "running".
https://bugzilla.redhat.com/show_bug.cgi?id=1612943
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The current qemuProcessReconnect logic paints a broad brush
determining that the shutdown reason must be crashed if it was
determined that the domain was started with -no-shutdown; however,
there's many other ways to get to the error label, so let's narrow
our reasoning window for using VIR_DOMAIN_SHUTOFF_CRASHED to the
period where we essentially know we've tried to create to the
monitor and before we were successful in opening the connection.
Failures that occur outside that window would thus be considered
as VIR_DOMAIN_SHUTOFF_UNKNOWN, at least for now.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
When qemuProcessReconnectHelper was introduced (commit d38897a5d)
reconnection failure used VIR_DOMAIN_SHUTOFF_FAILED; however, that
was changed in commit bda2f17d to either VIR_DOMAIN_SHUTOFF_CRASHED
or VIR_DOMAIN_SHUTOFF_UNKNOWN.
When QEMU_CAPS_NO_SHUTDOWN checking was removed in commit fe35b1ad6
the conditional state was just left at VIR_DOMAIN_SHUTOFF_CRASHED.
So introduce qemuDomainIsUsingNoShutdown which will manage the
condition when the domain was started with -no-shutdown so that
when/if reconnection failure occurs we can restore the decision
point used to determine whether CRASHED or UNKNOWN is provided.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1524230
The qemuBuildVhostuserCommandLine builds command line for
vhostuser type interfaces. It is duplicating some code of the
function it is called from (qemuBuildInterfaceCommandLine)
because of the way it's called. If we merge it into the caller
not only we save a few lines but we also enable checks that we
would have to duplicate otherwise (e.g. QoS availability).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
When we have variables A, B, C then there are two ways to free
them. Either in the order they are declared or the reversed one.
Any other ordering is confusing. In this commit I'm reordering
calls to VIR_FREE in the reversed order.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Adjusting domain format documentation, adding device address
support and adding command line generation for vfio-ap.
Since only one mediated hostdev with model vfio-ap is supported a check
disallows to define domains with more than one such hostdev device.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Chris Venteicher <cventeic@redhat.com>
Introduce vfio-ap capability.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Chris Venteicher <cventeic@redhat.com>
IOThread pids info will lost after libvirtd restart, then
if we call pinIOThread, sched_setaffinity will be called with
pid 0, not IOThread pid. So pinIOThread cannot work normally.
Signed-off-by: Jie Wang <wangjie88.huawei.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
virXMLFormatElement() frees attrBuf on success, but not necessarily
on failure. Most other callers of this function take the time to
reset attrBuf afterwords, but qemuDomainObjPrivateXMLFormatBlockjobs()
was relying on it succeeding, and could thus result in a memory leak.
Signed-off-by: Eric Blake <eblake@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The QEMU @cfg config variable is unused in context of qemuProcessInit,
let's drop it.
Signed-off-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1632833
When doing a SCSI passthrough we don't put format= onto the
command line. This causes qemu to probe the format automatically
which ends up in a warning in the domain log and possible qemu
disabling writes to the first block (according to the warning
message).
Based-on-work-of: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
-net name= will be deprecated in QEMU 3.1:
commit 101625a4d4ac7e96227a156bc5f6d21a9cc383cd
net: Deprecate the "name" parameter of -net
git describe: v3.0.0-791-g101625a4d4
Use the id option instead, supported since QEMU 1.2:
commit 6687b79d636cd60ed9adb1177d0d946b58fa7717
convert net_client_init() to OptsVisitor
git describe: v1.0-3564-g6687b79d63 contains: v1.2.0-rc0~142^2~8
Thankfully, libvirt only uses -net for non-PCI, non-virtio NICs
on ARM.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
We now explicitly handle media change elsewhere so we can drop the
switch statement. This will also make it more intuitive once CDROM
device hotplug might be supported.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Disk hotplug has slightly different semantics from media changing. Move
the media change code out and add proper initialization of the new
source object and proper cleanups if something fails.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The disk hotplug code also overloads media change which is not ideal.
This will allow splitting out of the media change code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The disk storage source needs to be prepared if we want to use -blockdev
or secrets for the new media image. It does not hurt to do the same for
the legacy hotplug code as well.
Unfortunately helpers like qemuDomainPrepareDiskSource take
virDomainDiskDef as an argument and it would be hard to fix them to take
an explicit source, so the function also temporarily replaces disk->src
for the new source in this function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Some functions require us to replace disk->src with the new source for
them to work properly. To avoid confusion all places which allow
explicit virStorageSource should get the appropriate definition.
The legacy code fortunately does not need anything from the old source
so that does not require modifications.
Blockdev does require the old definition so we'll pass it explicitly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Since the code is also used when changing media we need to allow
specifying explicit source for which we are going to prepare. With this
change callers don't have to replace disk->src with the new source
definition for generating these.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
qemu media changing code tried to assume old media's format for the new
one if that was not specified. Since the format will always be present
it does not make sense to keep the code around.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Old media changing code does not bother setting up the secrets for new
media or actually removing/adding of the corresponding objects.
Additionally it uses secrets setup for the old image to be removed as
the secret for the new image which is wrong.
Remove the support for secrets while changing media for the legacy
approach. The only reasonable way to fix it is when using blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
While the idea was good the implementation not so much as we need to
take into account the old disk data and the new source. The code will be
consolidated later in a different way.
This reverts commit 663b1d55de.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Preparing the storage source prior to assigning the alias will not work
as the names of the certain objects depend on the alias for the legacy
hotplug case as we generate the object names for the secrets based on
the alias.
This reverts commit 192fdaa614.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
My commit d6b8838 fixed the uid:gid for the pre-created UNIX sockets
but did not account for the different umask of libvirtd and QEMU.
Since commit 0e1a1a8c we set umask to '0002' for the QEMU process.
Manually tune-up the permissions to match what we would have gotten
if QEMU had created the socket.
https://bugzilla.redhat.com/show_bug.cgi?id=1633389
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
This function updates the used QEMU capabilities of @vm by querying
the QEMU capabilities cache.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Turns out, there are couple of bugs that prevent this feature
from being operational. Given how close to the release we are
disable the feature temporarily. Hopefully, it can be enabled
back after all the bugs are fixed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Let's ignore the checking of interface type when we call the function
qemuARPGetInterfaces to get IP from host's arp table.
Signed-off-by: Lin Ma <lma@suse.com>
Reviewed-by: Chen Hanxiao <chenhanxiao@gmail.com>
The only place where VIR_DOMAIN_EVENT_RESUMED should be generated is the
RESUME event handler to make sure we don't generate duplicate events or
state changes. In the worse case the duplicity can revert or cover
changes done by other event handlers.
For example, after QEMU sent RESUME, BLOCK_IO_ERROR, and STOP events
we could happily mark the domain as running and report
VIR_DOMAIN_EVENT_RESUMED to registered clients.
https://bugzilla.redhat.com/show_bug.cgi?id=1612943
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Thanks to the previous commit the RESUME event handler knows what reason
should be used when changing the domain state to VIR_DOMAIN_RUNNING, but
the emitted VIR_DOMAIN_EVENT_RESUMED event still uses a generic
VIR_DOMAIN_EVENT_RESUMED_UNPAUSED detail. Luckily, the event detail can
be easily deduced from the running reason, which saves us from having to
pass one more value to the handler.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Whenever we get the RESUME event from QEMU, we change the state of the
affected domain to VIR_DOMAIN_RUNNING with VIR_DOMAIN_RUNNING_UNPAUSED
reason. This is fine if the domain is resumed unexpectedly, but when we
sent "cont" to QEMU we usually have a better reason for the state
change. The better reason is used in qemuProcessStartCPUs which also
sets the domain state to running if qemuMonitorStartCPUs reports
success. Thus we may end up with two state updates in a row, but the
final reason is correct.
This patch is a preparation for dropping the state change done in
qemuMonitorStartCPUs for which we need to pass the actual running reason
to the RESUME event handler and use it there instead of
VIR_DOMAIN_RUNNING_UNPAUSED.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This patch replaces some rather generic VIR_DOMAIN_RUNNING_UNPAUSED
reasons when changing domain state to running with more specific ones.
All of them are done when libvirtd reconnects to an existing domain
after being restarted and sees an unfinished migration or save.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT was defined but not used anywhere
in our event generation code. This fixes qemuDomainRevertToSnapshot to
properly report why the domain was resumed.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Once we introduce cgroup v2 support we need to handle processes and
threads differently.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In cgroup v2 we need to handle processes and threads differently,
following patch will introduce virCgroupAddThread.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In a following case:
virsh start $domain
service libvirtd stop
<shutdown> the guest from within the $domain
service libvirtd start
Notice that PCI devices which have been assigned to the $domain will
still be bound to stub drivers instead rebound to host drivers.
In that case the call stack is like below:
libvirtd start
qemuProcessReconnect
qemuProcessStop (because $domain was shutdown without
libvirtd event to process that)
qemuHostdevReAttachDomainDevices
qemuHostdevReAttachPCIDevices
virHostdevReAttachPCIDevices
However, because qemuHostdevUpdateActiveDomainDevices was called
after the qemuConnectMonitor, the setup of the tracking of each
host device in the $domain on either the activePCIHostdevs list
or inactivePCIHostdev list will not occur in an orderly manner.
Therefore, virHostdevReAttachPCIDevices just neglects these host PCI
devices which are bound to stub drivers and doesn't rebind them to
host drivers.
This patch fixs that by moving qemuHostdevUpdateActiveDomainDevices before
qemuConnectMonitor during libvirtd reconnection processing.
Signed-off-by: Wu Zongyong <cordius.wu@huawei.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Use the new qemuDomainRemoveInactiveJobLocked to remove the
@obj during the virDomainObjListForEach call which holds a
lock on the domain object list.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Create a qemuDomainRemoveInactiveJobLocked which copies
qemuDomainRemoveInactiveJob except of course calling
another new helper qemuDomainRemoveInactiveLocked.
The qemuDomainRemoveInactiveLocked is a copy of
qemuDomainRemoveInactive except that instead of calling
virDomainObjListRemove it calls virDomainObjListRemoveLocked.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Introduce qemuDomainRemoveInactiveJobCommon to handle what will
be the common parts of the code with a new function that will
be used to call virDomainObjListRemoveLocked instead of the
unlocked variant.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: John Ferlan <jferlan@redhat.com>
It was already available in 1.5.0, so we can assume it's
present and avoid checking for it at runtime.
This commit is best viewed with 'git show -w'.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
We already prefer them in capabilities, and domcapabilities
should be consistent with that.
This commit is best viewed with 'git show -w'.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
The new implementation contains less duplicated code and
is easier to extend.
This commit is best viewed with 'git show -w'.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Now that we have reduced the number of sensible options down
to either the native QEMU binary or RHEL's qemu-kvm, we can
make virQEMUCapsInitGuest() a bit simpler.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Both Fedora's qemu-kvm and Debian's/Ubuntu's kvm are nothing
more than paper-thin wrappers around the native QEMU binary,
so we gain nothing by looking for them.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
We're only ever passing a single binary when calling this
function, so we can remove all code dealing with the
possibility of a second binary being specified.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
When the guest is native, we are currently looking at
potential KVM binaries regardless of whether or not we have
already located a QEMU binary suitable to run the guest.
This made sense back when KVM support was not part of QEMU
proper, but these days the KVM binaries are in most cases
just trivial wrapper scripts around the native QEMU binary
so it doesn't make sense to poke at them unless they're
the only binaries on the system, such as when running on
RHEL.
This will allow us to simplify both virQEMUCapsInitGuest()
and virQEMUCapsInitGuestFromBinary().
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
When running an armv7l guest on an aarch64 hosts, the
qemu-system-aarch64 binary should be our first choice instead
of qemu-system-arm since the former can take advantage of KVM
acceleration.
Move the special case to virQEMUCapsFindBinaryForArch() so
that it's handled along with all other cases rather than on
its own later on.
Doing so will also make further refactoring easier.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
virCapabilitiesAddGuestDomain() takes an optional binary
name: this is intended for cases where a certain domain
type can't use the default one registered for the guest
architecture, but has to use a special binary instead.
The current code, however, will pass 'binary' again when
'kvmbin' is not defined, which is unnecessary as 'binary'
has been registered as default earlier, and will result
in capabilities output such as
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<domain type='qemu'/>
<domain type='kvm'>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
</domain>
with the second <emulator> element providing no additional
information.
Change it so that, when 'kvmbin' is not defined, NULL is
passed and so the default emulator will be used instead.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
The function performing the checks, rather than its callers,
should contain comments explaining the rationale behind said
checks.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1630164
Since 2a13a0a103 we are querying the vhostuser's interface name
when building qemu command line. However, we forgot to do so on
hotplug.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
There seems to be no need to add the ignore_value wrapper or
caste with (void) to the unlink() calls, so let's just remove
them. I assume at one point in time Coverity complained. So,
let's just be consistent - those that care to check the return
status can and those that don't can just have the naked unlink.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1607202
It's essentially stated in the nwfilterBindingDelete that we
will allow the admin to shoot themselves in the foot by deleting
the nwfilter binding which then allows them to undefine the
nwfilter that is in use for the running guest...
However, by allowing this we cause a problem for libvirtd
restart reconnect processing which would then try to recreate
the missing binding attempting to use the deleted filter
resulting in an error and thus shutting the guest down.
So rather than keep adding virDomainConfNWFilterInstantiate
flags to "ignore" specific error conditions, modify the logic
to ignore, but VIR_WARN errors other than ignoreExists. This
will at least allow the guest to not shutdown for only nwfilter
binding errors that we can now perhaps recover from since we
have the binding create/delete capability.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
All of the ones being removed are pulled in by internal.h. The only
exception is sanlock which expects the application to include <stdint.h>
before sanlock's headers, because sanlock prototypes use fixed width
int, but they don't include stdint.h themselves, so we have to leave
that one in place.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
It doesn't really make sense for us to have stdlib.h and string.h but
not stdio.h in the internal.h header.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
When restoring a domain from a compressed image, we launch an
intermediate process for decompressing the saved data. If QEMU fails to
load the data for some reason, we force close the stdin/stdout file
descriptors of the intermediate process and wait for it to die. However,
virCommandWait can report various errors which would overwrite the real
error from QEMU. Thus instead of getting something useful:
internal error: process exited while connecting to monitor:
2018-09-17T15:17:29.998910Z qemu-system-x86_64: can't apply global
Skylake-Client-x86_64-cpu.osxsave=off: Property '.osxsave' not found
we could get an irrelevant error message:
internal error: Child process (lzop -dc --ignore-warn) unexpected
fatal signal 13
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Now that we know what metadata lock manager user wishes to use we
can load it when initializing security driver. This is achieved
by adding new argument to virSecurityManagerNewDriver() and
subsequently to all functions that end up calling it.
The cfg.mk change is needed in order to allow lock_manager.h
inclusion in security driver without 'syntax-check' complaining.
This is safe thing to do as locking APIs will always exist (it's
only backend implementation that changes). However, instead of
allowing the include for all other drivers (like cpu, network,
and so on) allow it only for security driver. This will still
trigger the error if including from other drivers.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This config option allows users to set and enable lock manager
for domain metadata. The lock manager is going to be used by
security drivers to serialize each other when changing a file
ownership or changing the SELinux label. The only supported lock
manager is 'lockd' for now.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The file being present doesn't necessarily mean anything these
days, as it's created independently of whether the kvm module
has been loaded[1]; moreover, we're already gathering all the
information we need through QMP, so poking the filesystem at
all is entirely unnecessary.
[1] https://github.com/systemd/systemd/commit/d35d6249d5a7ed3228
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
This capability is documented as having one meaning (whether
KVM is enabled by default) but is actually assigned two other
meanings over its life: whether the query-kvm QMP command is
available at first, and later on whether KVM is usable / was
used during probing.
Since the query-kvm QMP command was available in 1.5.0, we
can avoid probing for it; additionally, we can simplify the
logic by setting the flag when it applies instead of initially
setting it and then clearing it when it doesn't.
The flag's description is also updated to reflect reality.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
A side effect of recent changes is that we would always try
to regenerate the capabilities cache for non-native QEMU
binaries based on /dev/kvm availability, which is of course
complete nonsense. Make sure that doesn't happen.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
It was already available in 1.5.0.
Moreover, we're not even formatting it on the QEMU command
line, ever: we just use it as part of some logic that decides
whether KVM support should be advertised, and as it turns out
that logic is actually buggy and dropping this capability
fixes it.
https://bugzilla.redhat.com/show_bug.cgi?id=1628469
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Now that committing transactions using pid == -1 means that we're
not fork()-ing to run the transaction in a specific namespace, we
can utilize the transaction processing semantics in order to
start, run a or multiple commands, and then commit the
transaction without being concerned with other interactions or
transactions interrupting the processing. This will eventually
allow us to have a single place where all the paths can be
locked, followed by relabeling and unlocking again.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
In the future, the transactions are not going to be optional and
they will be run regardless of domain using namespace to collect
list of paths to be relabeled.
To make sure there won't be an API that goes behind transaction
code back update the comment that serves as decision manual
whether an API must be fully implemented or plain #define is
sufficient.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Even though the current use of the functions does not require full
implementation with transactions (none of the callers passes a path
somewhere under /dev), it doesn't hurt either. Moreover, in
future patches the paradigm is going to shift so that any API
that touches a file is required to use transactions.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Even though the current use of the function does not require full
implementation with transactions (none of the callers pass a path
somewhere under /dev), it doesn't hurt either. Moreover, in
future patches the paradigm is going to shift so that any API
that touches a file is required to use transactions.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
It is not a problem at all if the `tss` user/group does not exist, the code
fallbacks to the `root` user/group. However we report a warning for no reason
on every start-up. Fix this by checking if the user/group actually exists.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
After removing the host CPU model re-computation,
this function is no longer necessary.
This reverts commits:
commit d0498881a0
virQEMUCapsFreeHostCPUModel: Don't always free host cpuData
commit 5276ec712a
testUpdateQEMUCaps: Don't leak host cpuData
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Commit 82327038 moved a couple of checks out of the XML parser
into the domain validation; however, those checks seem to be more
useful as hypervisor specific checks rather than the more general
domain conf checks (nothing in the docs indicate a specific error).
Fortunately only QEMU was processing the memoryBacking, thus
add the changes to qemuDomainDefValidateMemory and change the
code a bit to make usage of the similar deref to def->mem and
the mem->nhugepages filter.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
We require QEMU 1.5.0 these days, so checking for versions
older than that is pointless.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The capability was introduced in QEMU 1.5.0, which is our
minimum supported QEMU version these days.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The capability was introduced in QEMU 1.3.1 and we require
QEMU 1.5.0 these days.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In some cases we are checking if the mount namespace is enabled
at two places: one is at the beginning of exported function (e.g.
qemuDomainNamespaceSetupDisk()) and the other is at the beginning
of qemuDomainNamespaceMknodPaths() which is called from the
former function anyway. Then we have some other functions which
rely on the later check solely.
In order to compensate for possibly needless function call,
qemuDomainNamespaceMknodPaths() returns early if @npaths is zero.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Commit 5b3492fadb moved qemuAgentCheckError calls into
qemuAgentCommand for various reasons; however, subsequent
commit 0977b8aa0 adding a new command made call again
So let's just remove the duplicitous call from
qemuAgentGetInterfaces.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Commit 5b3492fadb moved qemuAgentCheckError calls into
qemuAgentCommand for various reasons; however, subsequent
commit b1aa91e14 restored the call. So let's just remove
the duplicitous call from qemuAgentSetVCPUsCommand.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Previous commits removed all capabilities from per-device property
probing for:
pci-assign
kvm-pci-assign
usb-host
scsi-generic
Remove them from the virQEMUCapsDeviceProps list and get rid of the
redundant device-list-properties QMP calls.
Note that 'pci-assign' was already useless, because the QMP version
of the device is called 'kvm-pci-assign', see libvirt commit 7257480
from 2012.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Introduced by QEMU commit 28b77657 in v1.0-rc4~21^2~8.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Introduced by QEMU commit c29029d which was included in 1.5.0
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
At the time of the addition of 'pci-assign' in QEMU commit
v1.3.0-rc0~572^2 the bootindex argument was already supported.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
At the time of the addition of 'pci-assign' in QEMU commit
v1.3.0-rc0~572^2 the configfd argument was already supported.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Added by commit fc66c1603c and not used since.
Also, the device was present in QEMU 1.5.0 so this capability
will not be needed if we ever decide to implement usb-net support.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The qemuSecurityDomainSetPathLabel() function reports perfect
error itself. Do not overwrite it to something less meaningful.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There is no need to check if @npaths is not zero. Let's
qemuDomainNamespaceUnlinkPaths() handle that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
A virtio device such as
<controller type='scsi' model='virtio-scsi'/>
will be translated to one of four different QEMU devices
based on the address type. This behavior is the same for
all virtio devices, but unfortunately we have separate
ad-hoc code dealing with each and every one of them: not
only this is pointless duplication, but it turns out
that most of that code is not robust against new address
types being introduced and some of it is outright buggy.
Introduce a new function, qemuBuildVirtioDevStr(), which
deals with the issue in a generic fashion, and rewrite
all existing code to use it.
This fixes a bunch of issues such as virtio-serial-pci
being used with virtio-mmio addresses and virtio-gpu
not being usable at all with virtio-mmio addresses.
It also introduces a couple of minor regressions,
namely no longer erroring out when attempting to
use virtio-balloon and virtio-input devices with
virtio-s390 addresses; that said, virtio-s390 has
been superseded by virtio-ccw such a long time ago
that recent QEMU releases have dropped support for
the former entirely, so re-implementing such
device-specific validation is not worth it.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The appropriate time to ensure the required capabilities are
present is validate rather than command line generation: add
a new qemuDomainDeviceDefValidateInput() function and move
all existing checks there.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
So far we've only formatted it for virtio-blk-pci and
virtio-blk-ccw, but other virtio-blk devices also support
the corresponding option; moreover, we've always formatted
it for all virtio-scsi devices.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are several functions where we pointlessly duplicate
parts of the format string and pass the same arguments:
refactor them so that the common parts are formatted separately
from the variable parts.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1622455
If a domain is configured to use <source type='file'/> under
<memoryBacking/> we have to honour that setting and produce
-mem-path on the command line. We are not doing so if domain has
no guest NUMA nodes nor hugepages.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The function to retrieve the file system info using QEMU-GA is using
some conditionals to retrieve the info. This is wrong because the error
of some conditionals will be raised if VIR_STRDUP return errors and not
if some problem occurred with JSON.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This commit adds support to use the function qemuAgentGetHostname()
to obtain the domain hostname using QEMU-GA command.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This commit implements the function qemuAgentGetHostname() that uses
the QEMU guest agent command 'guest-get-host-name' to retrieve the
guest hostname of virtual machine running the QEMU-GA.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The struct is called virPCIDeviceAddress and the
functions operating on it should be named accordingly.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Commit f7b5566 added 'save_error' even though the function
already has 'originalError' used in the 'try_remove' section.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The size/capacity stats gathered in qemuDomainBlocksStatsGather when
using -blockdev would be overwritten by assigning/copying the transfered
data statistics at the end. Fix it by moving the assignment prior to
fetching the capacity data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
S390 is aware of both vfio-pci and vfio-ccw devices, so
on S390 the capability QEMU_CAPS_VFIO_PCI_DISPLAY will be
available. Add an extra check to make sure we only set the
display to off for vfio-pci mediated devices. Otherwise we
add display for vfio-ccw device and this breaks vfio-ccw
device qemu command line.
Fixes: d54e45b6e conf: Introduce new <hostdev> attribute 'display'
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Commit 6534b3c4 tried to raise an error when there is no numa
nodes by setting access='shared' in the domain config, but added
a helper called from qemuDomainDeviceDefValidate instead of a
helper called from qemuDomainDefValidate for XML:
<memoryBacking>
<hugepages/>
<access mode='shared'/>
</memoryBacking>
Since there are no memory devices in the test XML, there would
be no validation failure, but the test added was still failing.
Investigating that it turns out that unnecessary XML elements
were causing the failure (no need for <video>, <graphics>,
<pm>, usb controller model "piix3-uhci", disk attribute for
"discard='unmap'", <serial>, <console>, <channel> and a
memballoon model). Removing all those before moving the method
caused the test to succeed.
So this patch moves the validation to the right place and
removes all the unnecessary XML pieces that were causing
a false validation failure.
https://bugzilla.redhat.com/show_bug.cgi?id=1448149#c14
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We would have used virtio for networking anyway, but it's
better to be explicit; for graphics, none of the existing
models work right now but virtio is the only one which
has a non-PCI variant, so it's as good a default as any
Spotted-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
None of the existing models is suitable for use with
RISC-V virt guests, and we don't want information about
the serial console to be missing from the XML.
The name is based on comments in qemu/hw/riscv/virt.c:
RISC-V machine with 16550a UART and VirtIO MMIO
and in qemu/hw/char/serial.c:
QEMU 16550A UART emulation
along with the output of dmesg in the guest:
Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
10000000.uart: ttyS0 at MMIO 0x10000000 (irq = 13,
base_baud= 230400) is a 16550A
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The architecture is new enough that we don't need to
concern ourselves with backwards compatibility in any
capacity.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit 6700062 introduced a jump to error which skipped the
initialization of def:
qemu/qemu_parse_command.c:1870:9: error: variable 'def' is
used uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
if (!(qemuCaps = virQEMUCapsCacheLookup(capsCache, progargv[0])))
Initialize def to fix this warning and qemuCaps, to prevent
a future error like this.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Historically the argv -> xml convertor wanted the same default machine
as we'd set when parsing xml. The latter has now changed, however, to
use a default defined by libvirt. The former needs fixing to again
honour the default QEMU machine.
This exposed a bug in handling for the aarch64 target, as QEMU does not
define any default machine. Thus we should not having been accepting
argv without a -machine provided.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virQEMUCapsGetDefaultMachine() method doesn't get QEMU's default
machine any more, instead it gets the historical default that libvirt
prefers for each arch. Rename it, so that the old name can be used for
getting QEMU's default.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We don't honour the QEMU default machine type anymore, always using the
libvirt chosen default instead. The QEMU argv parser, however, will need
to know the exacty QEMU default, so we must record that info.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The affected functions are
virDeviceInfoPCIAddressWanted()
virDeviceInfoPCIAddressPresent()
which get renamed to
virDeviceInfoPCIAddressIsWanted()
virDeviceInfoPCIAddressIsPresent()
to comply with the naming convention used for other
predicates.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This patch ensures that changes in attributes of interfaces will emit
errors except if they are missing from the XML.
Previously we were falsely reporting successful updates, because some
changed attributes got overwritten before the validity checks.
https://bugzilla.redhat.com/show_bug.cgi?id=1599513
Signed-off-by: Katerina Koukiou <kkoukiou@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuProcessInitCpuAffinity prevents a VM from getting started on a
platform that uses cpu affinity wrapper stubs e.g. macOS.
The patch adds qemuProcessInitCpuAffinity stub on all platforms without
HAVE_SCHED_GETAFFINITY or HAVE_BSD_CPU_AFFINITY.
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The capability was usable since qemu 1.3 so we can remove all the
detection code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Allow mocking of the file descriptor numbers used for the TPM
passthrough mode by extracting the relevant code into an exported
function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
For versions where we can probe that the arguments are optional we can
perform the probing by a schema query rather than sending a separate
command to do so.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add a new modifier character '*' which will select given schema entry
only when it is optional (denoted by the presence of the 'default' key).
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split it into a function that returns the whole schema entry so that we
can do additional checks and a helper getting the type string from the
schema entry.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Introduce a few variables so that we can easily access the modifier
character and also don't have to do pointer arithmetic when selecting
the schema entries. This will simplify adding of new modifier
characters.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Extract the code used to probe for the functionality so that it does not
litter the code used for actual work.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Starting from qemu 2.7 the 'device' argument is in fact a name of the
job itself. Change our APIs accordingly and adjust the error message.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The API deals with a block job so use the common error reporting
function for it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Move all relevant APIs dealing with existing jobs together.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The API does not report any special job-related error so the generic
error function should be used.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Now that the job name is used in single place in the respective
functions remove the temporary strings.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Report the generic errors using the existing function so that we don't
reimplement the same functionality multiple times.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Both were removed prior to qemu v1.2.0-rc0 when switching to the new
error format where almost all error types were converted to GenericError.
Relevant qemu commits are <de253f14912e> and <df1e608a01eb0>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We're going to need to assign virtio-mmio addresses to non-ARM
guests soon, so let's create a generic wrapper that calls to
the architecture-specific implementation.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
With the current implementation, adding a new architecture
and not updating preferredMachines accordingly will not
cause a build failure, making it very likely that subtle
bugs will be introduced in the process. Rework the code
so that such issues will be caught by the compiler.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We should compare the alias/qdev id only when it was provided by the
caller and when it was found in the reply. Otherwise we could
dereference a NULL pointer. STRNEQ_NULLABLE is not appropriate since
it would return 'true' if the string was not present in the JSON output.
Found by Coverity.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
qemuDomainDiskGetBackendAlias allocates a copy of the nodename string so
we need to free it at the end.
Found by Coverity.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
qemuDomainDetachControllerDevice contained code which implied that alias
might be NULL when detaching the disk and tried to generate it. This is
no longer possible so we can remove the code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
It was found that in cases with host devices virProcessKillPainfully
might be able to send signal zero to the target PID for quite a while
with the process already being gone from /proc/<PID>.
That is due to cleanup and reset of devices which might include a
secondary bus reset that on top of the actions taken has a 1s delay
to let the bus settle. Due to that guests with plenty of Host devices
could easily exceed the default timeouts.
To solve that, this adds an extra delay of 2s per hostdev that is associated
to a VM.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Add code paths which call into the new functions to gather the data on a
per-node-name basis and tweak the aliases used for extracting the data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the 'qdev' instead of the disk alias to lookup the stats and
transfer the capacity from the appropriate node name so that the
function works with -blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Switch to using the QOM/qdev handles in all calls to
qemuMonitorGetBlockInfo when using -blockdev. The callers also need to
make sure to use the correct handle afterwards to extract the data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
With -blockdev qemu will not report any useful "device" for the data
returned by 'query-block'. We need to start using the 'qdev' field to do
so in cases when "device" is empty or it does not match the entry name.
This patch adds data for the 'qdev' field into the returned data
structure.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Data relevant for the storage of a backing chain member will need to be
reported separately when switching to blockdev. Prepare a function that
extracts the appropriate data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When reporting stats for the backing chain some of them make sense only
for the topmost entry as they are actually tied to the frontend device.
We unfortunately can't change that fact, but we can stop reporting all
zero stats for the backing chain members where they don't make any
sense.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
While we report the read and written byte stats for every single layer
of the backing chain, qemu in fact reports them only for the frontend.
Split out the relevant stats into a separate function so that we can
later fix this bug and stop reporting it for backing chain entries where
they don't make sense.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Split out the header so that the loop can be refactored later.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Split out the code which converts the stats gathered in
qemuDomainGetStatsBlock into typed parameters so that it will look
less ugly when extending it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In cases when -blockdev is used we need to use 'query-named-block-nodes'
instead of 'query-block'. This means that we can extract the
write-threshold variable right away.
To keep compatibility with old VMs modify the code which was extracting
the value previously so that it updates the stats structure and a single
code path then can be used to extract the data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Allow reuse of qemuDomainGetStatsOneBlock to work with nodenames by
removing the code that looks up the stats data to the caller.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Disk image size data are not contained in the reply of query-blockstats
but need to be gathered from query-block. For use with -blockdev we
really need to call 'query-named-block-nodes' and process it to retrieve
the correct data.
This patch introduces qemuMonitorBlockStatsUpdateCapacityBlockdev which
updates the capacity data by nodename rather than device name.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For use with -blockdev we need to be able to retrieve the stats by
'qdev' for the frontend device stats since 'device' will be empty. Note
that for non-blockdev case qdev and 'device' with 'drive-' skipped would
be the same.
Additionally so that we can report the highest written offset we need to
also be able to access them by node-name for backing chain purposes.
In cases when 'device' is empty it does not make sense to gather them.
Allow arranging the stats simultaneously in all the above dimensions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than totalling every entry from 'query-block' for stats provided
by qemuDomainBlocksStatsGather total only stats for known disks. This
will allow to return data for nodenames and qdevs in the same hash so
that we can use them with -blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The string is not modified so it does not make sense to have a copy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the new APIs which allow to manipulate the tray and media separately
and also allow using a nodename to refer to a media to implement media
changing.
With the new approach we don't have to call eject twice as the media is
removed by calling qemuMonitorBlockdevMediumRemove.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
With blockdev we can use the full range of commands to manipulate the
tray and the medium separately. Implement monitor code for this.
Schema testing done in the qemumonitorjsontest allows us to verify that
we generate the commands correctly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Initialize data for the whole backing chain when plugging in or removing
disks when a machine supports -blockdev.
Similarly to startup we need to prepare the structures for the whole
backing chain and take care of the copy-on-read feature.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the 'node-name' provided in the event if 'device' is empty to look
up the disk.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add handling of the 'id' field in the event which corresponds to the
QDEV id of the device.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Allow looking up also via QOM id and rename the function accordingly.
Also add documentation of the specifics.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the nodename to resize the device rather than the drive alias.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
With -blockdev the drive alias can't be used any more so we need to
switch to the QOM name.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The proper way to do this would be to use the 'throttle' driver but
unfortunately it can't change the 'throttle_group' so we can't provide
feature parity. This hack uses the block_set_io_throttle command to do
so until we can properly replace it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add a helper which will use a collection of other helpers to determine
whether a disk requires throttling to be enabled.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Format the backing chain onto the commandline using the 'json' syntax
with -blockdev.
The command line formatter needs only minor tweaks to add the new
entries but we now need to initialize the structures that are used for
every layer of the backing chain.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Pass in the node name as the backend alias when -blockdev is used. As
copy-on-read is expressed by a separate -blockdev backing chain member
we need to decide which node name to use here.
For empty cdroms when using -blockdev there is no backend at all so NULL
is returned.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The copy on read functionality is done using a separate layer in the
backing chain. Add function to generate properties for it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Prepare the full backing chain by instantiating authentication and TLS
transport secrets and other necessary objects so that we can add the
full backing chain explicitly to qemu. This also includes allocation of
nodenames for the individual backing chain members.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The copy-on-read feature is expressed by adding a new node layer in
qemu when using -blockdev. Since we will keep these per-disk (as opposed
to per storage source) we need to store the appropriate node names in
the disk definition.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To allow referring to the drives via the QOM id we need to setup the
floppy drives with a proper ID. This means that -device should be used
for them.
There are the following quirks:
- FDC needs to be instantiated prior to any floppy device
- floppy drive specified via -device does not support 'bootindex'
(hacked around by passing bootindexA=1 to the FDC)
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When we stop using -drive qemu stops reporting it in some of the monitor
commands. To allow referring the disk frontends and the corresponding
block backends we need to know these names. Unfortunately different
buses require different names.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When using -blockdev you need to use the qom path to refer to the disk
fronends. Add means for storing the path and getting it after restart.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the index stored in virStorageSource struct rather than
recalculating it. Currently we'd report proper numbers but that will
change with blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Node names for block objects in qemu need to be unique for an instance
of the qemu process. Add a counter to generate objects sequentially and
store it in the status XML so that we can restore it.
The helpers added allow to create new node names and reset the counter
after the VM process terminates.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We'll specify them ourselves so it's pointless to attempt to redetect
them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We need to load the backing chain from the XML when using -blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
SD cards are currently passed by using -drive only which would not be
compatible with using -blockdev fully.
Clear QEMU_CAPS_BLOCKDEV if the VM has such devices.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The capability currently is not enabled so that we can add individual
bits first.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It should be impossible to lack an alias in the domain definition. Other
disk types don't generate it so remove it here as well.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'device' field reported by 'query-block' is empty when -blockdev is
used. Add an argument which will allow matching disk by using the qdev
id so we can use this code with -blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'device' argument matches only the legacy drive alias. For blockdev
we need to set the throttling for a QOM id and thus we'll need to use
the 'id' field.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The wrapper executes the command and does error detection so there's no
need to open-code all of those things.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move the preparation steps from qemuDomainAttachDiskGeneric up into
qemuDomainAttachDeviceDiskLive so that also media changing can use the
prepared file.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use qemuDomainAttachDeviceDiskLive to change the media in
qemuDomainChangeDiskLive as the former function already does all the
necessary steps to prepare the new medium.
This also allows us to turn qemuDomainChangeEjectableMedia static.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Turns out that 'query-nodes' is not what we want and the
'query-blockstats' command was in fact buggy. Revert the new field since
it's not needed.
This reverts commit 50edca1331.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We don't use it for anything useful so it does not make much sense to
extract it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
QEMU supports 'block_resize' since 0.14 so we don't need to do explicit
checking. Additionally the caller did not use the different value at
all.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Remove the pointless "empty path" check and use a better error message
if the disk was not found.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Currently we'd report the alias of the drive which is backing the cdrom
rather than the device itself:
$ virsh event ds tray-change --loop
event 'tray-change' for domain ds disk drive-ide0-0-1: opened
event 'tray-change' for domain ds disk drive-ide0-0-1: closed
Report the disk device alias as we document in the API docs:
https://libvirt.org/html/libvirt-libvirt-domain.html#virConnectDomainEventTrayChangeCallback
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since we're not saving the platform-specific data into a cache, we're
not going to populate the structure, which in turn will cause a crash
upon calling virNodeGetSEVInfo because of a NULL pointer dereference.
Ultimately, we should start caching this data along with host-specific
capabilities like NUMA and SELinux stuff into a separate cache, but for
the time being, this is a semi-proper fix for a potential crash.
Backtrace (requires libvirtd restart to load qemu caps from cache):
#0 qemuGetSEVInfoToParams
#1 qemuNodeGetSEVInfo
#2 virNodeGetSEVInfo
#3 remoteDispatchNodeGetSevInfo
#4 remoteDispatchNodeGetSevInfoHelper
#5 virNetServerProgramDispatchCall
#6 virNetServerProgramDispatch
#7 virNetServerProcessMsg
#8 virNetServerHandleJob
#9 virThreadPoolWorker
#10 virThreadHelper
https: //bugzilla.redhat.com/show_bug.cgi?id=1612009
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Brijesh Singh <brijesh.singh@amd.com>
So the procedure to detect SEV support works like this:
1) we detect that sev-guest is among the QOM types and set the cap flag
2) we probe the monitor for SEV support
- this is tricky, because QEMU with compiled SEV support will always
report -object sev-guest and query-sev-capabilities command, that
however doesn't mean SEV is supported
3) depending on what the monitor returned, we either keep or clear the
capability flag for SEV
Commit a349c6c21c added an explicit check for "GenericError" in the
monitor reply to prevent libvirtd to spam logs about missing
'query-sev-capabilities' command. At the same time though, it returned
success in this case which means that we didn't clear the capability
flag afterwards and happily formatted SEV into qemuCaps. Therefore,
adjust all the relevant callers to handle -1 on errors, 0 on SEV being
unsupported and 1 on SEV being supported.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
