This allows to implement libvirt functions that use streams, such as
virDoaminScreenshot, without the need to store the downloaded data in
a temporary file first. The stream driver directly interacts with
libcurl to send and receive data.
The driver uses the libcurl multi interface that allows to do a transfer
in multiple curl_multi_perform() calls. The easy interface would do the
whole transfer in a single curl_easy_perform() call. This doesn't work
with the libvirt stream API that is driven by multiple calls to the
virStreamSend() and virStreamRecv() functions.
The curl_multi_wait() function is used to do blocking operations. But it
was added in libcurl 7.28.0. For older versions it is emulated using the
socket callback of the multi interface.
The current driver only supports blocking operations. There is already
some code in place for non-blocking mode but it is not complete.
This patch fills in the functionality of
processNicRxFilterChangedEvent(). It now checks if it is appropriate
to respond to the NIC_RX_FILTER_CHANGED event (based on device type
and configuration) and takes appropriate action. Currently it checks
if the guest interface has been configured with
trustGuestRxFilters='yes', and if the host side device is macvtap. If
so, and the MAC address on the guest has changed, the MAC address of
the macvtap device is changed to match.
The result of this is that networking from the guest will continue to
work if the mac address of a macvtap-connected network device is
changed from within the guest, as long as trustGuestRxFilters='yes'
(previously changing the MAC address in the guest would break
networking).
NIC_RX_FILTER_CHANGED is sent by qemu any time a NIC driver in the
guest modified the NIC's RX Filter (for example, if the MAC address of
the NIC is changed by the guest).
This patch doesn't do anything useful with that event; it just sets up
all the plumbing to get news of the event into a worker thread with
all proper locking/reference counting, and provide an easy place to
add in desired functionality.
See src/qemu/EVENTHANDLERS.txt for information/instructions on adding
a libvirt-internal handler for a qemu event (using
NIC_RX_FILTER_CHANGED as an example).
This text was in the commit log for the patch that added the event
handler for NIC_RX_FILTER_CHANGED, and John Ferlan expressed a desire
that the information not be "lost", so I've put it into a file in the
qemu directory, hoping that it might catch the attention of future
writers of handlers for qemu events.
This function can be called at any time to get the current status of a
guest's network device rx-filter. In particular it is useful to call
after libvirt recieves a NIC_RX_FILTER_CHANGED event - this event only
tells you that something has changed in the rx-filter, the details are
retrieved with the query-rx-filter monitor command (only available in
the json monitor). The command sent to the qemu monitor looks like this:
{"execute":"query-rx-filter", "arguments": {"name":"net2"} }'
and the results will look something like this:
{
"return": [
{
"promiscuous": false,
"name": "net2",
"main-mac": "52:54:00:98:2d:e3",
"unicast": "normal",
"vlan": "normal",
"vlan-table": [
42,
0
],
"unicast-table": [
],
"multicast": "normal",
"multicast-overflow": false,
"unicast-overflow": false,
"multicast-table": [
"33:33:ff:98:2d:e3",
"01:80:c2:00:00:21",
"01:00:5e:00:00:fb",
"33:33:ff:98:2d:e2",
"01:00:5e:00:00:01",
"33:33:00:00:00:01"
],
"broadcast-allowed": false
}
],
"id": "libvirt-14"
}
This is all parsed from JSON into a virNetDevRxFilter object for
easier consumption. (unicast-table is usually empty, but is also an
array of mac addresses similar to multicast-table).
(NB: LIBNL_CFLAGS was added to tests/Makefile.am because virnetdev.h
now includes util/virnetlink.h, which includes netlink/msg.h when
appropriate. Without LIBNL_CFLAGS, gcc can't find that file (if
libnl/netlink isn't available, LIBNL_CFLAGS will be empty and
virnetlink.h won't try to include netlink/msg.h anyway).)
This same structure will be used to retrieve RX filter info for
interfaces on the host via netlink messages, and RX filter info for
interfaces on the guest via the qemu "query-rx-filter" command.
As is done with other items such as vlan, virtualport, and bandwidth,
set the actual trustGuestRxFilters value to be used by a domain
interface according to a merge of the same attribute in the interface,
portgroup, and network in use. the interface setting always takes
precedence (if specified), followed by portgroup, and finally the
setting in the network is used if it's not specified in the interface
or portgroup.
This new attribute will control whether or not libvirt will pay
attention to guest notifications about changes to network device mac
addresses and receive filters. The default for this is 'no' (for
security reasons). If it is set to 'yes' *and* the specified device
model and connection support it (currently only macvtap+virtio) then
libvirt will watch for NIC_RX_FILTER_CHANGED events, and when it
receives one, it will issue a query-rx-filter command, retrieve the
result, and modify the host-side macvtap interface's mac address and
unicast/multicast filters accordingly.
The functionality behind this attribute will be in a later patch. This
patch merely adds the attribute to the top-level of a domain's
<interface> as well as to <network> and <portgroup>, and adds
documentation and schema/xml2xml tests. Rather than adding even more
test files, I've just added the net attribute in various applicable
places of existing test files.
Prior patch removed the need for the virConnectPtr in the unplug
detach host path which caused ripple effect to remove in multiple
callers. The previous patch just left things as ATTRIBUTE_UNUSED -
this patch will remove the variable.
https://bugzilla.redhat.com/show_bug.cgi?id=1141732
Introduced by commit id '8f76ad99' the logic to detach a scsi_host
device (SCSI or iSCSI) fails when attempting to remove the 'drive'
because as I found in my investigation - the DelDevice takes care of
that for us.
The investigation turned up commits to adjust the logic for the
qemuMonitorDelDevice and qemuMonitorDriveDel processing for interfaces
(commit id '81f76598'), disk bus=VIRTIO,SCSI,USB (commit id '0635785b'),
and chr devices (commit id '55b21f9b'), but nothing with the host devices.
This commit uses the model for the previous set of changes and applies
it to the hostdev path. The call to qemuDomainDetachHostSCSIDevice will
return to qemuDomainDetachThisHostDevice handling either the audit of
the failure or the wait for the removal and then call into
qemuDomainRemoveHostDevice for the event, removal from the domain hostdev
list, and audit of the removal similar to other paths.
NOTE: For now the 'conn' param to +qemuDomainDetachHostSCSIDevice is left
as ATTRIBUTE_UNUSED. Removing requires a cascade of other changes to be
left for a future patch.
Since commit 8eb55d782a2b9afacc7938694891cc6fad7b42a5 libxml2 removes
two slashes from the URI when there is no server part. This is fixed
with beb7281055dbf0ed4d041022a67c6c5cfd126f25, but only if the calling
application calls xmlSaveUri() on URI that xmlURIParse() parsed. And
that is not the case in virURIFormat(). virURIFormat() accepts
virURIPtr that can be created without parsing it and we do that when we
format network storage paths for gluster for example. Even though
virStorageSourceParseBackingURI() uses virURIParse(), it throws that data
structure right away.
Since we want to format URIs as URIs and not absolute URIs or opaque
URIs (see RFC 3986), we can specify that with a special hack thanks to
commit beb7281055dbf0ed4d041022a67c6c5cfd126f25, by setting port to -1.
This fixes qemuxml2argvtest test where the disk-drive-network-gluster
case was failing.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Since 87dea4fcff vboxGetDrivers() is not
used for getting the vbox network driver. The only call the code does
is using NULL as the @networkDriver_ret param , but the code still used
vbox[0-9][0-9]NetworkDriver that didn't exist anymore.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This patch implements support for the ivshmem device in QEMU.
Signed-off-by: Maxime Leroy <maxime.leroy@6wind.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Ivshmem is supported by QEMU since 0.13 release.
Signed-off-by: Maxime Leroy <maxime.leroy@6wind.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This patch adds parsing/formatting code as well as documentation for
shared memory devices. This will currently be only accessible in QEMU
using it's ivshmem device, but is designed as generic as possible to
allow future expansion for other hypervisors.
In the devices section in the domain XML users may specify:
- For shmem device using a server:
<shmem name='shmem0'>
<server path='/tmp/socket-ivshmem0'/>
<size unit='M'>32</size>
<msi vectors='32' ioeventfd='on'/>
</shmem>
- For ivshmem device not using an ivshmem server:
<shmem name='shmem1'>
<size unit='M'>32</size>
</shmem>
Most of the configuration is made optional so it also allows
specifications like:
<shmem name='shmem1/>
<shmem name='shmem2'>
<server/>
</shmem>
Signed-off-by: Maxime Leroy <maxime.leroy@6wind.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Aeons ago (commit 34dcbbb4, v0.8.2), we added a new libvirt event
(VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON) in order to tell the user WHY
the guest halted. This is because at least VDSM wants to react
differently to ENOSPC events (resize the lvm partition to be larger,
and resume the guest as if nothing had happened) from all other events
(I/O is hosed, throw up our hands and flag things as broken). At the
time this was done, downstream RHEL qemu added a vendor extension
'__com.redhat_reason', which would be exactly one of these strings:
"enospc", "eperm", "eio", and "eother". In our stupidity, we exposed
those exact strings to clients, rather than an enum, and we also
return "" if we did not have access to a reason (which was the case
for upstream qemu).
Fast forward to now: upstream qemu commit c7c2ff0c (will be qemu 2.2)
FINALLY adds a 'nospace' boolean, after discussion with multiple
projects determined that VDSM really doesn't care about distinction
between any other error types. So this patch converts 'nospace' into
the string "enospc" for compatibility with RHEL clients that were
already used to the downstream extension, while leaving the reason
blank for all other cases (no change from the status quo).
See also https://bugzilla.redhat.com/show_bug.cgi?id=1119784
* src/qemu/qemu_monitor_json.c (qewmuMonitorJSONHandleIOError):
Parse reason field from modern qemu.
* include/libvirt/libvirt.h.in
(virConnectDomainEventIOErrorReasonCallback): Document it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Right now when building the qemu command line, we try to do various
unconditional validations of the guest CPU against the host CPU. However
this checks are overly applied. The only time we should use the checks
are:
- The user requests host-model/host-passthrough, or
- When KVM is requsted. CPU features requested in TCG mode are always
emulated by qemu and are independent of the host CPU, so no host CPU
checks should be performed.
Right now if trying to specify a CPU for arm on an x86 host, it attempts
to do non-sensical validation and falls over.
Switch all the test cases that were intending to test CPU validation to
use KVM, so they continue to test the intended code.
Amend some aarch64 XML tests with a CPU model, to ensure things work
correctly.
check domain's status before call virQEMUCapsGet to report a accurate
error when domain is shut off
Resolve: https://bugzilla.redhat.com/show_bug.cgi?id=1147847
Signed-off-by: Shanzhi Yu <shyu@redhat.com>
After 87dea4fcf one can observe a build failure:
./autogen.sh --system --without-driver-modules && make
CCLD libvirtd
../src/.libs/libvirt_driver_vbox.a(libvirt_driver_vbox_impl_la-vbox_driver.o):
In function `vboxNetworkRegister':
/home/jtomko/work/libvirt/libvirt.git/src/vbox/vbox_driver.c:168: undefined
reference to `vboxGetNetworkDriver'
collect2: error: ld returned 1 exit status
make[3]: *** [libvirtd] Error 1
The problem is that when building without driver modules the VBOX
network driver is not linked into the the VBOX driver.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This patch seperate the domain driver and the network driver.
libvirt_driver_vbox_impl.la has been linked in the network driver.
So that the version specified codes in vbox_V*.c would only be
compiled once.
The vboxGetNetworkDriver provides a simple interface to get vbox
network driver.
This patch rewrites two public APIs. They are vboxNetworkUndefine
and vboxNetworkDestroy. They use the same core function
vboxNetworkUndefineDestroy. I merged it in one patch.
This patch actually contains two public API, virNetworkDefineXML
and virNetworkCreateXML. They use the same core function
vboxNetworkDefineCreateXML. So I merged it together.
The patch dbb4cbf532 by Michal has splited the vbox driver into
three parties. This modification brings a more suitable interface
to the previous patch.
The new function vboxGetDriver is introduced to get the
corresponding vbox domain driver directly thought the vbox version.
Functions like vboxGetNetworkDriver and vboxGetStorageDriver
will be introduced after rewriting it's drivers.
This patch, by the way, fixed the align problem for vbox in
Makefile.am
Up until now, we set memballoon period in monitor successfully, however
we did not update domain definition structure, thus dumpxml was omitting
period attribute in memballoon element
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1140960
When trying to update bandwidth limits on a running domain, limits get
updated in our internal structures, however XML parser reads
bandwidth limits from network 'actual' definition. Committing this patch
it is now available to update bandwidth 'actual' definition as well,
thus updating domain runtime XML.
A cygwin build of 1.2.9 fails with:
util/virprocess.c:87:27: fatal error: sys/syscall.h: No such file or directory
# include <sys/syscall.h>
But in reality, the ONLY user of setns() is lxc, which is Linux-only.
It's easiest to just limit the setns workarounds to Linux.
* src/util/virprocess.c (setns): Limit definition to Linux.
Signed-off-by: Eric Blake <eblake@redhat.com>
If we don't properly clean up all processes in the
machine-<vmname>.scope systemd won't remove the cgroup and subsequent vm
starts fail with
'CreateMachine: File exists'
Additional processes can e.g. be added via
echo $PID > /sys/fs/cgroup/systemd/machine.slice/machine-${VMNAME}.scope/tasks
but there are other cases like
http://bugs.debian.org/761521
Invoke TerminateMachine to be on the safe side since systemd tracks the
cgroup anyway. This is a noop if all processes have terminated already.
Management software wants to be able to allocate disk space on demand.
To support this they need keep track of the space occupation of the
block device. This information is reported by qemu as part of block
stats.
This patch extend the block information in the bulk stats with the
allocation information.
To keep the same behaviour a helper is extracted from
qemuMonitorJSONGetBlockExtent in order to get per-device allocation
information.
Signed-off-by: Francesco Romani <fromani@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
While our code gathers block stats via "query-blockstats" some
information need to be gathered via "query-block". Add a helper function
that will update the blockstats structure if requested.
If you use public api virConnectListAllDomains() with second parameter
set to NULL to get only the number of domains you will lock out all
other operations with domains.
Introduced by commit 2c680804.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This removes the artificial and unnecessary restriction that
virDomainSetMaxDowntime() only be called while a migration is in
progress.
https://bugzilla.redhat.com/show_bug.cgi?id=1146618
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The current block stats code matched up the disk name with the actual
stats by the order in the data returned from qemu. This unfortunately
isn't right as qemu may return the disks in any order. Fix this by
returning a hash of stats and index them by the disk alias.
Commit de0aeaf filtered them out from the host-model features,
to allow host-model to be migratable by default.
Even though they are not passed to QEMU for host-passthrough,
(and not enabled by default) filter them out too
so the user does not think the domain has them.
https://bugzilla.redhat.com/show_bug.cgi?id=1147584
Commit fba6bc4 introduced the non-migratable invtsc feature,
breaking save/migration with host-model and host-passthrough.
On hosts with this feature present it was automatically included
in the CPU definition, regardless of QEMU support.
Commit de0aeaf stopped including it by default for host-model,
but failed to fix host-passthrough.
This commit ignores checking of CPU features with host-passthrough,
since we don't pass them to QEMU (only -cpu host is passed),
allowing domains using host-passthrough that were saved with
the broken version of libvirtd to be restored.
https://bugzilla.redhat.com/show_bug.cgi?id=1147584
When virConnectDomainQemuMonitorEventRegister is called with the
VIR_CONNECT_DOMAIN_QEMU_MONITOR_EVENT_REGISTER_REGEX flag,
ignore the flag instead of crashing.
https://bugzilla.redhat.com/show_bug.cgi?id=1144920
For the new VIR_DOMAIN_EVENT_ID_TUNABLE event we have a bunch of
constants added
VIR_DOMAIN_EVENT_CPUTUNE_<blah>
VIR_DOMAIN_EVENT_BLKDEVIOTUNE_<blah>
This naming convention is bad for two reasons
- There is no common prefix unique for the events to both
relate them, and distinguish them from other event
constants
- The values associated with the constants were chosen
to match the names used with virConnectGetAllDomainStats
so having EVENT in the constant name is not applicable in
that respect
This patch proposes renaming the constants to
VIR_DOMAIN_TUNABLE_CPU_<blah>
VIR_DOMAIN_TUNABLE_BLKDEV_<blah>
ie, given them a common VIR_DOMAIN_TUNABLE prefix.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=993411
On some systems (using libtirpc instead of glibc's
implementation), xdr_uint64_t exists rather under different name:
xdr_u_int64_t. This makes compilation fail then:
libvirt_lxc-lxc_monitor_protocol.o: In function `xdr_virLXCMonitorInitEventMsg':
/usr/local/src/libvirt/libvirt-1.1.1/src/./lxc/lxc_monitor_protocol.c:31: undefined reference to `xdr_uint64_t'
Therefore we rather mirror the d707c866 commit and redefine
xdr_uint64_t if needed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
On a domain startup, the variable store path is generated if needed.
The path is intended to be generated only once. However, the updated
domain definition is not saved into config dir rather than state XML
only. So later, whenever the domain is destroyed and the daemon is
restarted, the generated path is forgotten and the file may be left
behind on virDomainUndefine() call.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There's no one to free() it anyway. Instead, we can just pass the
provided array pointer directly.
==20039== 48 bytes in 4 blocks are definitely lost in loss record 658 of 787
==20039== at 0x4C2A700: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20039== by 0x4EA661F: virAllocN (viralloc.c:191)
==20039== by 0x50386EF: remoteNodeGetFreePages (remote_driver.c:7625)
==20039== by 0x5003504: virNodeGetFreePages (libvirt.c:21379)
==20039== by 0x154625: cmdFreepages (virsh-host.c:374)
==20039== by 0x12F718: vshCommandRun (virsh.c:1935)
==20039== by 0x1339FB: main (virsh.c:3747)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Since 363e9a68 we track backing chain metadata when creating snapshots
the right way even for the inactive configuration. As we did not yet
update other code paths that modify the backing chain (blockpull) the
newDef backing chain gets out of sync.
After stopping of a VM the new definition gets copied to the next start
one. The new VM then has incorrect backing chain info. This patch
switches the backing chain detector to always purge the existing backing
chain and forces re-detection to avoid this issue until we'll have full
backing chain tracking support.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1144922
Due to a missing check the API can be successfully called even if
the connection is ReadOnly. Fortunately, the API hasn't been
released yet, so there's no need for a CVE.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Add files parallels_sdk.c and parallels_sdk.h for code
which works with SDK, so libvirt's code will not mix with
dealing with parallels SDK.
To use Parallels SDK you must first call PrlApi_InitEx function,
and then you will be able to connect to a server with
PrlSrv_LoginLocalEx function. When you've done you must call
PrlApi_Deinit. So let's call PrlApi_InitEx on first .connectOpen,
count number of connections and deinitialize, when this counter
becomes zero.
Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
Executing prlctl command is not an optimal way to interact with
Parallels Cloud Server (PCS), it's better to use parallels SDK,
which is a remote API to paralles dispatcher service.
We prepared opensource version of this SDK and published it on
github, it's distributed under LGPL license. Here is a git repo:
https://github.com/Parallels/parallels-sdk.
To build with parallels SDK user should get compiler and linker
options from pkg-config 'parallels-sdk' file. So fix checks in
configure script and build with parallels SDK, if that pkg-config
file exists and add gcc options to makefile.
Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
We have these configuration knobs, like max_clients and
max_anonymous_clients. They limit the number of clients
connected. Whenever the limit is reached, the daemon stops
accepting new ones and resumes if one of the connected clients
disconnects. If that's the case, a debug message is printed into
the logs. And when the daemon starts over to accept new clients
too. However, the problem is the messages have debug priority.
This may be unfortunate, because if the daemon stops accepting
new clients all of a sudden, and users don't have debug logs
enabled they have no idea what's going on. Raise the messages
level to INFO at least.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The changes in commit c7542573 introduced possible segfault. Looking
deeper into the code and the original code before the patch series were
applied I think that we should report error for each function failure
and also we shouldn't call some of the function twice.
Found by coverity.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Use the universal tunable event to report changes to user. All
blkdeviotune values are prefixed with "blkdeviotune".
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When you updated some blkdeviotune values for running domain the values
were stored only internally, but not saved into the live XML so they
won't survive restarting the libvirtd.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The commit 1b854c76 introduced a new function 'virPolkitCheckAuth' and
in the #else section when you don't have polkit all attributes should be
follwed by ATTRIBUTE_UNUSED.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
It would be nice to also print a params pointer and number of params in
the debug message and the previous limit for number of params in the rpc
message was too large. The 2048 params will be enough for future events.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
A long time ago in a galaxy far, far away it has been decided
that libvirt will manage not only domains but host as well. And
with my latest work on qemu driver supporting huge pages, we miss
the cherry on top: an API to allocate huge pages on the run.
Currently users are forced to log into the host and adjust the
huge pages pool themselves. However, with this API the problem
is gone - they can both size up and size down the pool.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In the previous patch I've changed the for loop bounds but forgot
to 'git add' changes that adapt the rest of the code.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The check for ISCSI devices was missing a check of subsys type, which
meant we could skip labelling of other host devices as well. This fixes
USB hotplug on F21
https://bugzilla.redhat.com/show_bug.cgi?id=1145968
Spawning the pkcheck program every time a permission check is
required is hugely expensive on CPU. The pkcheck program is just
a dumb wrapper for the DBus API, so rewrite the code to use the
DBus API directly. This also simplifies error handling a bit.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the remote daemon auth check and the access control
code to use the common polkit API for checking auth.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert virAccessDriverPolkitFormatProcess to use typesafe API
for getting process ID attribute.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Update virNetServerClientCreateIdentity and virIdentityGetSystem
to use the new typesafe APIs for setting identity attributes
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
There are now two places in libvirt which use polkit. Currently
they use pkexec, which is set to be replaced by direct DBus API
calls. Add a common API which they will both be able to use for
this purpose.
No tests are added at this time, since the impl will be gutted
in favour of a DBus API call shortly.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Add options for tuning segment offloading:
<driver>
<host csum='off' gso='off' tso4='off' tso6='off'
ecn='off' ufo='off'/>
<guest csum='off' tso4='off' tso6='off' ecn='off' ufo='off'/>
</driver>
which control the respective host_ and guest_ properties
of the virtio-net device.
In nodeGetFreePages, if startCell is given by '0',
and the max node number is '0' too. The for-loop
wouldn't be executed.
So convert it to while-loop.
Before:
> virsh freepages --cellno 0 --pagesize 4
error: internal error: no suitable info found
After:
> virsh freepages --cellno 0 --pagesize 4
4KiB: 472637
Signed-off-by: Jincheng Miao <jmiao@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If you have a bridge network in running domain and libvirtd is restarted
the information about host bridge interface is lost from live xml.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1140085
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Request erroring out from the backing chain traveller and drop qemu's
internal backing chain integrity tester.
The backing chain traveller reports errors by itself with possibly more
detail than qemuDiskChainCheckBroken ever could.
We also need to make sure that we reconnect to existing qemu instances
even at the cost of losing the backing chain info (this really should be
stored in the XML rather than reloaded from disk, but that needs some
work).
Add a new parameter to virStorageFileGetMetadata that will break the
backing chain detection process and report useful error message rather
than having to use virStorageFileChainGetBroken.
This patch just introduces the option, usage will be provided
separately.
Now we have universal tunable event so we can use it for reporting
changes to user. The cputune values will be prefixed with "cputune" to
distinguish it from other tunable events.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This new event will use typedParameters to expose what has been actually
updated and the reason is that we can in the future extend any tunable
values or add new tunable values. With typedParameters we don't have to
worry about creating some other events, we will just use this universal
event to inform user about updates.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In the function at one place we check if def->cpu is NULL prior
to accessing def->cpu->ncells. Then, later in the code,
def->cpu->ncells is accessed directly, without the check. This
makes coverity unhappy, because the first check makes it think
def->cpu can be NULL. However, the function is not called if
def->cpu is NULL. Therefore, remove the first check and hopefully
make coverity cheer again.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Cleanup virDomanDef structure from other nested structure and create
separate type definition for them.
Fix a typo in virDomainHugePage.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
