In virNetServerProgramDispatchCall, The arg is passed as a void*
and used to point to a certain struct depended on the dispatcher,
so I think it's the memory of the struct's member that leaks and
this memory shuld be freed by xdr_free.
In virNetServerClientNew, client->rx is assigned by invoking
virNetServerClientNew, but isn't freed if client->privateData's
initialization failed, which leads to a memory leak. Thanks to
Liang Peng's suggestion, put virNetMessageFree(client->rx) into
virNetServerClientDispose() to release the memory.
Signed-off-by: jiangjiacheng <jiangjiacheng@huawei.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Apart from it being a long time ago the 'openvz' driver is also rarely
used.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Parse the element only when the network type requires it and assign it
directly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Specifically rework of parsing of the 'managed' attribute simplifies the
code greatly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Base whether virtualport is supported for a given interface on a new
variable named 'virtualport_flags' which also configures the parser for
the virtualports subelement and fill it in the appropriate interface
type branches.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The moved code is pure validation of semantics of the definition and not
actual parsed values. Move it to the validation code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This also removes the confusing use of variables named 'tmpNode' and
'tmp_node' right next to each other.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
VIR_XPATH_NODE_AUTORESTORE_NAME is a more generic version of the
VIR_XPATH_NODE_AUTORESTORE macro used to save the 'node' inside a XPath
context struct. The new macro allows specifying the name of the variable
used to save the context so that it can be used multiple times inside a
function's nested scopes.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move the code fetching the model of the net device before the main code
parsing individual device types so that the data is available before the
upcoming refactor.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add a helper for parsing long long values from XML properties with
semantics like virXMLPropInt.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Convert the individual 'if' clauses to a switch statement.
By moving the check that 'source_node' is non-null inside of each case
rather we will be able to move more type specific code into the switch
statement when it will be refactored in subsequent patches.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to virXMLPropString it extracts a string but reports an error
similar to the newer virXMLProp helpers if the attribute is not present.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All callers treat NULL as if the string is not present in the XML.
Adjust the description so that it's implied that it's not an error and
thus also no error reporting is expected.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The helper function extracts a UUID with semantics similar to other
helpers we have.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In certain cases it's inconvenient to move the XPath's context current
node in the caller. Add a 'node' argument and override it inside the
function. VIR_XPATH_NODE_AUTORESTORE handles the cleanup.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Do the XPath fetches first as they don't require cleanup and rename
'cleanup' to 'error' and take it only on failure.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use two separate variables for the nodes and count instead.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The variables are only used in code paths which can't fail after they
are allocated.
Additionally decrease scope of the variables.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace ad-hoc logic that fills the default by use of the proper helper
function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Separate the code into virDomainNetDefParseXMLDriver. Some local
variables were renamed and the scope decreased.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move it into an independent block and move temporary variables locally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some values were extracted into a temporary variable and then assigned
to the definition later without a modification.
Directly assign them instead.
One slight modification was done to 'ifname' which was cleared in
certain cases.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Convert the last two variables having inline cleanup to automatic
cleanup.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The callback struct does not always have to be set which could
cause a dereferencing of a NULL pointer. This patch adds check
against NULL in missing places before dereferencing.
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Let me take you on a short trip to history. A long time ago,
libvirt would configure all QEMUs to use $hugetlbfs/libvirt/qemu
for their hugepages setup. This was problematic, because it did
not allow enough separation between guests. Therefore in
v3.0.0-rc1~367 the path changed to a per-domain basis:
$hugetlbfs/libvirt/qemu/$domainShortName
And to help with migration on daemon restart a call to
qemuProcessBuildDestroyMemoryPaths() was added to
qemuProcessReconnect() (well, it was named
qemuProcessBuildDestroyHugepagesPath() back then, see
v3.10.0-rc1~174). This was desirable then, because the memory
hotplug code did not call the function, it simply assumes
per-domain paths to exist. But this changed in v3.5.0-rc1~92
after which the per-domain paths are created on memory hotplug
too.
Therefore, it's no longer necessary to create these paths in
qemuProcessReconnect(). They are created exactly when needed
(domain startup and memory hotplug).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When creating a node in QEMU's namespace the whole link chain is
created with it. Here, we use g_file_read_link() from the child
(running inside the namespace) to learn whether a link exists and
points to expected target. Now, when building the namespace there
can't be any symlinks and this g_file_read_link() returns NULL
always. And because we pass a local GError variable to it, glib
tries to set it to a localized error message. This comes with
creating a (static) hash table inside of g_strerror() and is
guarded with a mutex. The hash table is also allocated using
GSlice allocator instead of g_malloc, and since the latter is
safe to use after fork (because it's documented to use plain
malloc), glib went with the former, naturally. Now, GSlice
allocator has plenty of internal mutexes and thus hitting a
locked mutex is not that hard.
Fortunately, we don't care about any error from
g_file_read_link() and thus we can pass NULL which avoids calling
g_strerror().
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2120965
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The qemuNamespaceMknodPaths() function is responsible for
creating files/directories in QEMU's mount namespace. When
called, it is given list of paths that have to be created in the
namespace. It processes this list and removes items that are not
directly under /dev, but on a 'shared' filesystem (note that all
other mount points are preserved). And it may so happen that
after this pre-process no files/directories need to be created in
the namespace. If that's the case, exit early and avoid
fork()-ing only to find out the same.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Besides the -cpu host, The host-phys-bits=on applies to custom or max
cpu model, So the host-passthrough validation check is unnecessary for
maxphysaddr with mode='passthrough'.
Signed-off-by: Lin Ma <lma@suse.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
In case of variable 'oldjob' (job structure) in
qemuProcessReconnect() the cb pointer was just copied from the
existing job structure in virDomainObjPreserveJob(). This caused
the job and oldjob sharing the same pointer, which was later
freed at the end of the qemuProcessReconnect() function by
automatic call to virDomainObjClearJob(). This caused an invalid
read in and subsequent daemon crash as the job structure was
trying to read cb which had been already freed.
This patch changes the copying to g_memdup that allocates
different pointer, which can be later safely freed.
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
For prevent memory leak and easier to use, So change
virDomainEventTunableNew to get virTypedParameterPtr *params
and set it = NULL.
Signed-off-by: lu zhipeng <luzhipeng@cestc.cn>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
When reconnecting to a running QEMU process, we construct the
per-domain path in all hugetlbfs mounts. This is a relict from
the past (v3.4.0-100-g5b24d25062) where we switched to a
per-domain path and we want to create those paths when libvirtd
restarts on upgrade.
And with namespaces enabled there is one corner case where the
path is not created. In fact an error is reported and the
reconnect fails. Ideally, all mount events are propagated into
the QEMU's namespace. And they probably are, except when the
target path does not exist inside the namespace. Now, it's pretty
common for users to mount hugetlbfs under /dev (e.g.
/dev/hugepages), but if domain is started without hugepages (or
more specifically - private hugetlbfs path wasn't created on
domain startup), then the reconnect code tries to create it.
But it fails to do so, well, it fails to set seclabels on the
path because, because the path does not exist in the private
namespace. And it doesn't exist because we specifically create
only a subset of all possible /dev nodes. Therefore, the mount
event, whilst propagated, is not successful and hence the
filesystem is not mounted. We have to do it ourselves.
If hugetlbfs is mount anywhere else there's no problem and this
is effectively a dead code.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2123196
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Sometimes it may come handy to just bind mount a directory/file
into domain's namespace. Implement a thin wrapper over
qemuNamespaceMknodPaths() which has all the logic we need.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
When setting up namespace for QEMU we look at mount points under
/dev (like /dev/pts, /dev/mqueue/, etc.) because we want to
preserve those (which is done by moving them to a temp location,
unshare(), and then moving them back). We have a convenience
helper - qemuDomainGetPreservedMounts() - that processes the
mount table and (optionally) moves the other filesystems too.
This helper is also used when attempting to create a path in NS,
because the path, while starting with "/dev/" prefix, may
actually lead to one of those filesystems that we preserved.
And here comes the corner case: while we require the parent mount
table to be in shared mode (equivalent of `mount --make-rshared /'),
these mount events propagate iff the target path exist inside the
slave mount table (= QEMU's private namespace). And since we
create only a subset of /dev nodes, well, that assumption is not
always the case.
For instance, assume that a domain is already running, no
hugepages were configured for it nor any hugetlbfs is mounted.
Now, when a hugetlbfs is mounted into '/dev/hugepages', this is
propagated into the QEMU's namespace, but since the target dir
does not exist in the private /dev, the FS is not mounted in the
namespace.
Fortunately, this difference between namespaces is visible when
comparing /proc/mounts and /proc/$PID/mounts (where PID is the
QEMU's PID). Therefore, if possible we should look at the latter.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
When creating a path in a domain's mount namespace we try to set
ACLs on it, so that it's a verbatim copy of the path in parent's
namespace. The ACLs are queried upfront (by
qemuNamespaceMknodItemInit()) but this is fault tolerant so the
pointer to ACLs might be NULL (meaning no ACLs were queried, for
instance because the underlying filesystem does not support
them). But then we take this NULL and pass it to virFileSetACLs()
which immediately returns an error because NULL is invalid value.
Mimic what we do with SELinux label - only set ACLs if they are
non-NULL which includes symlinks.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
When retiring QEMU_CAPS_BLOCKDEV_HOSTDEV_SCSI capability the
commit removed a bit too much. Previously, all other devices than
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI were ignored in
qemuDomainDeviceHostdevDefPostParseRestoreBackendAlias(). But the
commit in question removed not only the capability check but also
this return early statement. Restore it back.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2129239
Fixes: dc8dbb27d4
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
For NVMe disks we skip setting SELinux label on corresponding
VFIO group (/dev/vfio/X). This bug is only visible with
namespaces and goes as follows:
1) libvirt assigns NVMe disk to vfio-pci driver,
2) kernel creates /dev/vfio/X node with generic device_t SELinux
label,
3) our namespace code creates the exact copy of the node in
domain's private /dev,
4) SELinux policy kicks in an changes the label on the node to
vfio_device_t (in the top most namespace),
5) libvirt tells QEMU to attach the NVMe disk, which is denied by
SELinux policy.
While one can argue that kernel should have created the
/dev/vfio/X node with the correct SELinux label from the
beginning (step 2), libvirt can't rely on that and needs to set
label on its own.
Surprisingly, I already wrote the code that aims on this specific
case (v6.0.0-rc1~241), but because of a shortcut we take earlier
it is never ran. The reason is that
virStorageSourceIsLocalStorage() considers NVMe disks as
non-local because their source is not accessible via src->path
(or even if it is, it's not a local path).
Therefore, do not exit early for NVMe disks and let the function
continue.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2121441
Fixes: 284a12bae0
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The 'cb' and 'jobDataPrivateCb' pointers are stored in the job object
but made point to the memory owned by the virDomainXMLOption struct in
the callers.
Since the 'virdomainjob' module isn't in control the lifetime of the
virDomainXMLOption, which in some cases is freed before the domain job
data, freed memory would be dereferenced in some cases.
Copy the structs from virDomainXMLOption to ensure the lifetime. This is
possible since the callback functions are immutable.
Fixes: 84e9fd068c
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
According to repology.org:
RHEL-8: 0.9.4
RHEL-9: 0.9.6
Debian 11: 0.9.5
openSUSE Leap 15.3: 0.8.7
Ubuntu 20.04: 0.9.3
And the rest of distros has something newer anyways. Requiring
0.8.1 or newer allows us to drop the terrible hack where we
rename functions at meson level using #define. Note, 0.8.0 is
the version of libssh where the rename happened. It also allows
us to stick with SHA-256 hash algorithm for public keys.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When a hypervisor driver is not compiled in and a user enables the
monolithic libvirtd, they get the following misleading error:
$ virsh -c qemu:///system
error: failed to connect to the hypervisor
error: Failed to connect socket to '/var/run/libvirt/virtqemud-sock': No such file or directory
The issue is that the daemon side of the remote driver can't find the
appropriate driver, but the remote driver always accepts everything and
thus attempts to delegate further, which in case of libvirtd makes no
sense.
Refuse opening a connection for local URIS even when the requested
driver is not registered in case when we are inside 'libvirtd' as
libvirtd doesn't have anything to delegate to.
$ virsh -c qemu:///system
error: failed to connect to the hypervisor
error: no connection driver available for qemu:///system
Discovered when investigating https://gitlab.com/libvirt/libvirt/-/issues/370
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patch which is fixing the opening of drivers in monolithic mode
needs to know whether we are inside 'libvirtd' but the code where the
decision needs to happen is not re-compiled per daemon. Thus we need to
pass this information to the stateful driver init function so that it
can be remebered.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use automatic memory freeing for 'driver' and return error right away to
avoid the 'cleanup' label.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virConnectOpenAuth provides an unified interface with using 'flags' to
select the proper mode.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Configuring an URI alias such as
uri_aliases = [
"blah=qemu://invaliduri@@@",
]
Results in a double free when the alias is used:
$ virsh -c blah
free(): double free detected in tcache 2
Aborted (core dumped)
This happens as the 'alias' variable is first assigned to 'uristr' which
is cleared in the 'failed' label and then is explicitly freed again.
Fix this by stealing the alias into 'uristr' and removing the
unnecessary freeing.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The aim of qemuProcessNeedHugepagesPath() is to determine whether
a hugetlbfs mount point is required for given domain (as in
whether qemuBuildMemoryBackendProps() picks up
memory-backend-file pointing to a hugetlbfs mount point). Well,
when domain is configured to use memfd backend then that
condition can never be true. Therefore, skip creating domain's
private path under hugetlbfs mount points.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
At time of this patch struct 'virDomainDef' has 1736 bytes. Allocate it
dynamically to keep the stack frame size in reasonable values.
This patch also fixes remoteRelayDomainQemuMonitorEventCheckACL, where
we didn't clear the stack'd variable prior to use. Fortunately for now
the code didn't look at anything else than what the code overwrote.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
At time of writing DEVLINK_ATTR_MAX equals to 176, thus the stack'd size
of the pointer array is almost 1.4kiB. Allocate it dynamically.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce 'virLXCProcessReportStartupLogError' which simplifies the
error handling on startup of the LXC process when reading of the error
log is needed.
This function has unusual return value semantics but it helps to make
the callers simpler.
This patch also removes 2 1k stack'd buffers from virLXCProcessStart.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that all preceding flags were deleted we can fix the enum value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'qemuMonitorJSONMigrate' is called from:
- qemuMonitorMigrateToHost
- qemuMonitorMigrateToSocket
Both of the above function are called only from
qemuMigrationSrcStart.
- qemuMonitorMigrateToFd
- called from:
- qemuMigrationSrcToFile
Both instances here pass QEMU_MONITOR_MIGRATE_BACKGROUND
directly.
- qemuMigrationSrcStart
qemuMigrationSrcStart is then called from qemuMigrationSrcRun and
qemuMigrationSrcResume, both of which always add QEMU_MONITOR_MIGRATE_BACKGROUND
to the flags.
Thus any caller always passes the flag so that we can remove the flag
altogether.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Remove the support for enabling the 'blk' and 'inc' parameters of the
'migrate' command as there are no users any more.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
QEMU supported the NBD server required for the new-style migration for a
long time already and when coupled with -blockdev the old style
migration doesn't even work, thus remove support for it.
This patch modifies the code to check that the destination returned data
for the NBD migration and returns an error if it did not and deletes the
fallback code paths which would not work.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The NBD server (detected via 'nbd-server-start' qmp command) was added
to qemu in v1.3 and can't be compiled out.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In commit 6111b23522 removing pre-blockdev code paths I've
improperly refactored the setup of non-shared storage migration.
Specifically the code checking that there are disks and setting up the
NBD data in the migration cookie was originally outside of the loop
checking the user provided list of specific disks to migrate, but became
part of the block as it was not un-indented when a higher level block
was being removed.
The above caused that if non-shared storage migration is requested, but
the user doesn't provide the list of disks to migrate (thus implying to
migrate every appropriate disk) the code doesn't actually setup the
migration and then later on falls back to the old-style migration which
no longer works with blockdev.
Move the check that there's anything to migrate out of the
'nmigrate_disks' block.
Fixes: 6111b23522
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2125111
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/373
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Adding supposedly secure cleanup for secrets in anything related to the
XML parser is pointless because there are multiple other un-sanitized
copies of the full XML and the XML parser state at the very least.
Similarly in case RPC was used to transport the XML the RPC buffers are
not sanitized.
Additionally this patch was incomplete as it didn't sanitize the
password in the cleanup function for virDomainGraphicsAuthDef.
This reverts commit 51f8130d78
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Although these and functions in the following two patches are for
now just being used by the qemu driver, it makes sense to have all
begin job functions in the same file.
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch removes virCHDomainObjEndJob() and replaces it with
call to the generalized virDomainObjEndJob().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch removes virLXCDomainObjEndJob() and replaces it with
call to the generalized virDomainObjEndJob().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch removes libxlDomainObjEndJob() and replaces it with
call to the generalized virDomainObjEndJob().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch moves qemuDomainObjEndJob() into
src/conf/virdomainjob as universal virDomainObjEndJob().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch removes virCHDomainObjBeginJob() and replaces it with
call to the generalized virDomainObjBeginJob().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This patch removes virLXCDomainObjBeginJob() and replaces it with
call to the generalized virDomainObjBeginJob().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch removes libxlDomainObjBeginJob() and replaces it with
generalized virDomainObjBeginJob().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch moves qemuDomainObjBeginJob() into
src/conf/virdomainjob as universal virDomainObjBeginJob().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch uses the job object directly in the domain object and
removes the job object from private data of all drivers that use
it as well as other relevant code (initializing and freeing the
structure).
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This patch adds the generalized job object into the domain object
so that it can be used by all drivers without the need to extract
it from the private data.
Because of this, the job object needs to be created and set
during the creation of the domain object. This patch also extends
xmlopt with possible job config containing virDomainJobObj
callbacks, its private data callbacks and one variable
(maxQueuedJobs).
This patch includes:
* addition of virDomainJobObj into virDomainObj (used in the
following patches)
* extending xmlopt with job config structure
* new function for freeing the virDomainJobObj
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
There may be a case that the callback structure will exist with
no callbacks (following patches). This patch adds check for
specific callbacks before using them.
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The following patches move job object as a member into the domain
object. Because of this, domain_conf (where the domain object is
defined) needs to import the file with the job object.
It makes sense to move jobs to the same level as the domain_conf:
into src/conf/
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Struct virDomainJobData is meant for statistics for async jobs.
It was used to keep track of only two attributes, one of which is
also in the generalized virDomainJobObj ("started") and one which
is always set to the same value, if any job is active
("jobType").
This patch removes usage & allocation of virDomainJobData
structure and rewrites libxlDomainJobUpdateTime() into more
suitable libxlDomainJobGetTimeElapsed().
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This patch moves qemuDomainObjBeginJobInternal() as
virDomainObjBeginJobInternal() into hypervisor in order to be
used by other hypervisors in the following patches.
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Now that we assume all the virtio capabilities, this function does not
check anything.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Added by QEMU commit:
commit 74b3e46630446568aecb0be1c77c4875d7a52f6d
Author: Jason Wang <jasowang@redhat.com>
CommitDate: 2019-10-25 07:46:22 -0400
virtio: add property to enable packed virtqueue
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Jens Freimann <jfreimann@redhat.com>
Message-Id: <20191025083527.30803-9-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
git describe: v4.1.0-1780-g74b3e46630 contains: v4.2.0-rc0~32^2~17
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
All the supported QEMU versions should have iothread support
on the virtio-scsi controllers if they are compiled in.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Introduced by QEMU commit 0846e6359c407e372f446723b8b7b09ac20d0f03
released in QEMU 1.3.0
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Function daemonConfigFilePath() will assign a path to
remote_config_file definitely and the path will be validated
in following codes. So, it's unnecessary to return value
from daemonConfigFilePath() and check the returned value.
Signed-off-by: jiangjiacheng <jiangjiacheng@huawei.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
The password may not be valid in the error branch, but for
higher security, it's better to clean up the memory before
freeing it.
Signed-off-by: jiangjiacheng <jiangjiacheng@huawei.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
We have always considered "migrate_cancel" QMP command to return after
successfully cancelling the migration. But this is no longer true (to be
honest I'm not sure it ever was) as it just changes the migration state
to "cancelling". In most cases the migration is canceled pretty quickly
and we don't really notice anything, but sometimes it takes so long we
even get to clearing migration capabilities before the migration is
actually canceled, which fails as capabilities can only be changed when
no migration is running. So to avoid this issue, we can wait for the
migration to be really canceled after sending migrate_cancel. The only
place where we don't need synchronous behavior is when we're cancelling
migration on user's request while it is actively watched by another
thread.
https://bugzilla.redhat.com/show_bug.cgi?id=2114866
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
We will need a little bit more code around qemuMonitorMigrateCancel to
make sure it works as expected. The new qemuMigrationSrcCancel helper
will avoid repeating the code in several places.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Let's call this qemuMigrationSrcCancelUnattended as the function is
supposed to be used when no other thread is watching the migration.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Just before pushing my earlier commit I've switch order of two
arguments of virProcessGetStatInfo() (as suggested in review).
However, I forgot to swap the arguments in
qemuDomainGetStatsCpuProc() which leads to userTime and sysTime
being swapped.
Fixes: 044b8744d6
Reported-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Use approach similar to virFileIsSharedFsFUSE to declaratively handle
the filesystem magic numbers mapping to libvirt's fstypes.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The filesystem type magic constant was added for the 'quobyte' shared
filesystem in commit 451094bd15 but is present neither in the kernel
sources nor in coreutils which we've historically used as source of
information.
Since the code dealing with FUSE-based filesystems doesn't need the
constant we can remove it and the now-dead check for it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
While the code works properly as no code path is specifically wanting to
check for glusterfs, we should properly declare glusterfs as a separate
from GFS2.
Fixes: 478da65fb4
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'virFileIsSharedFixFUSE' was used to update the 'f_type' field for
certain shared filesystem types.
This patch renames it to 'virFileIsSharedFsFUSE' and makes it directly
return whether the FUSE filesystem is shared or not and simplifies
additions to the list of shared FUSE filesystems.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Automatically free memory of 'canonPath' so that the failure of
'setmntent' doesn't have to go to 'cleanup'. This allows us to remove
the cleanup section and the 'ret' variable as the rest of the function
can't fail.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Expand some of the uncommon or unobvious filesystem names in a comment.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We populate the bits individually so unsigned is the proper type.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For domains started under session URI, we don't set up CGroups
(well, how could we since we're not running as root anyways).
Nevertheless, fetching CPU statistics exits early because of
lacking cpuacct controller. But with recent extension to
virProcessGetStatInfo() we can get the values we need from the
proc filesystem. Implement the fallback for the session URI as
some of virt tools rely on cpu.* stats to be reported (virt-top,
virt-manager).
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/353
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1693707
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The virProcessGetStatInfo() helper parses /proc stat file for
given PID and/or TID and reports cumulative cpuTime which is just
a sum of user and sys times. But in near future, we'll need those
times separately, so make the function return them too (if caller
desires).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Split up the condition and report a different error message when the
host or host config results in S390 PV launch security being
unavailable.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2122534
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
The replacement is 'serial' and 'parallel' respectively introduced at
least in qemu-2.9 and the old versions are deprecated since qemu-6.0
(qemu commit 5965243641d797b22 ).
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All of the properties use '-1' as default and the code omits formatting
them when the property is '-1'. Additionally subsequent validation code
rejects all other negative values anyways.
Since we've never formatted '-1' into an XML formatted by libvirt we can
make the parser more strict, as we will never fail to parse existing
on-disk libvirt-owned XMLs.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2121627
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move some checks earlier so that they are not tucked at the back of the
block of code doing the actual parsing.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'index' is parsed to fit into a signed int but not have negative values.
virXMLPropInt can do that internally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Refactor all cases which use virXMLPropInt and then subsequently check
that the parsed value is not '-1'/negative by using the VIR_XML_PROP_NONNEGATIVE
flag for virXMLPropInt.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code attempted to report an error if the user added the 'index'
attribute to the 'target' element, but neglected to actually return an
error code.
Fix it by using the VIR_XML_PROP_NONNEGATIVE flag for virXMLPropInt
which refuses user passed negative numbers.
Fixes: 020dd80ecb
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Code was not indented properly for one of the nested conditions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rewrite the code to use virXMLFormat element so that we can avoid a
bunch of unnecessary checks.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move the PCI controller code into virDomainControllerDefFormatPCI.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Typecast the controller type variable and add all cases to the switch
statement.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The virtio-*-(non-)-transitional device models which replace the use of
'disable-legacy'/'disable-modern' features were introduced in qemu-4.0.
This means we can remove the specific parts of the code for formatting
the old-style device options and replace all other code to solely depend
on the QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL flag.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL is the evolution of
QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY from qemu's point of view. Make sure
that we consider both when assesing whether a device belongs on PCIe.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The '<inactiveDomain>' element stores the next-start definition of a VM
on snapshot. It was not covered by the schema when it was introduced.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2121276
Fixes: 152c165d34
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move all definition under the <domain> element into a separate
definition so that it can be referenced from elements with other names.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move the overrides into a single file so that later patches can add
another top level element 'inactiveDomain' used in snapshots.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code (since 448be8f706) useds 'vport_ops' in XML.
Later commit cc17f09246 added schema for 'vports_ops' (extra 's').
Fix the schema and the corresponding docs.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2121262
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the full link to the backup XML description page and use the proper
anchor after html->RST coversion.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
Checkpoints created via virDomainCheckpointCreateXML are generally not
very useful as they need to be coupled with a backup.
Add a disclaimer to the docs explaining why users should use
virDomainBackupBegin instead.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
Fix the link target after the conversion of the XML description to RST
which renamed anchors and drop the <a> tag from the C code comment.
Apart from not working properly in the .c file it didn't work in the
generated docs either as the brackets were escaped.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
Remove the unused source code for the sheepdog storage backend.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The sheepdog project is unmaintained, with last commit in 2018 and
numerous unanswered issues reported.
Remove the libvirt storage driver support for it to follow the removal
of the client support in qemu.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add some checks that commit 0225483adc forgot to include.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Openstack developers reported that newly-created mdevs were not
recognized by libvirt until after a libvirt daemon restart. The source
of the problem appears to be that when libvirt gets the udev 'add'
event, the sysfs tree for that device might not be ready and so libvirt
waits 100ms for it to appear (max 100 waits of 1ms each). But in the
OpenStack environment, the sysfs tree for new mediated devices was
taking closer to 250ms to appear and therefore libvirt gave up waiting
and didn't add these new devices to its list of nodedevs.
By changing the wait time to 1 second (max 100 waits of 10ms each), this
should provide enough time to enable these deployments to recognize
newly-created mediated devices, but it shouldn't increase the delay for
more traditional deployments too much.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2109450
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
When commit bac6b266fb added this "functionality" this was the only
naming I could think of, but after discussion with Dan we found the name
'null' fits a bit better, so change it before we make a release with the
old name.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The most recent environment e.g. present in our Fedora Rawhide builds
fail to build the tree with clang with the following error:
../src/util/virhostcpu.c:1291:25: error: field 'header' with variable sized type 'struct kvm_msrs' not at the end of a struct or class is a GNU extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
struct kvm_msrs header;
^
The problem seems to be that clang doesn't like the new way the
'entries' field in struct kvm_msrs is declared.
To work around the issue we can simply allocate the variable dynamically
and use the 'entries' member as it was intended to to access the
members.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Just like the socket, remove the pidfile when TPM emulator is being stopped. In
order to make this a bit cleaner, try to remove it even if swtpm_ioctl does not
exist.
https://bugzilla.redhat.com/show_bug.cgi?id=2111301
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Instead of separately building the commandline into a string to log,
just wait a few lines until we've built the virCommand object, and
call virCommandToString, which does the same thing.
(As a bonus, we were already calling virCommandToString to put the
commandline in a string in case of a failure when running it - from
the point of view of *that* usage, we're just moving the call to
virCommandToString *up* a few lines, i.e. we now only construct the
commandline string once.)
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Although the next commit will eliminate the one current use of
virFirewallRuleToString(), a future commit will once again have a use
for it, but in a different source file so it will need to be a global
function rather than static. Make that change now so that we don't get
a compile error from having an unused static function in the next
commit.
(The arg list is also changed to include the name of the command as a
separate argument rather than just assuming that it can be derived
from the rule's layer (which is correct for iptables, but won't be
correct for nftables)).
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This was a wrapper to call a function in virfirewalld.c that sends an
iptables passthrough rule to firewalld. It hasn't been used in a year
or two, and won't ever be used in the future since passthrough rules
are only supported for iptables, and we've determined that we
shouldn't use iptables passthrough rules.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similar to the other drivers, virNetworkDriverState now has a
virObject-derived object called virNetworkDriverConfig which is used
for config items.
As a starting point, the directory paths used by the network driver
are moved there (again, parallelling what is done for other drivers).
Using items in virNetworkDriverConfig is (yes, again) similar to using
items in the other drivers' config - anything in the config object is
immutable (once initialized), so the state object only needs to be
locked while getting a reference to the config object, and then the
members of the config object can be safely used until the config
object is unrefed.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is more similar to lxc and qemu drivers, where the driver state
struct is defined along with a config struct in ${driver}_conf.h
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
After converting virNetworkDef * to g_autoptr(virNetworkDef) the
cleanup codepath was empty, so it has been removed.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
After converting virNetworkDef * to g_autoptr(virNetworkDef) the
cleanup codepath was empty, so it has been removed.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The virCommand module is specifically designed so that no caller
has to check for retval of individual virCommand*() APIs except
for virCommandRun() where the actual error is reported. Moreover,
virCommandNew*() use g_new0() to allocate memory and thus it's
not really possible for those APIs to return NULL. Which is why
they are even marked as ATTRIBUTE_NONNULL. But there are few
places where we do check the retval which is a dead code
effectively. Drop those checks.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
When multiple VFIO or VDPA devices are assigned to a guest, the guest
can fail to start because the guest fails to map enough memory. For
example, the case mentioned in
https://bugzilla.redhat.com/show_bug.cgi?id=2111317 results in this
failure:
2021-08-05T09:51:47.692578Z qemu-kvm: failed to write, fd=31, errno=14 (Bad address)
2021-08-05T09:51:47.692590Z qemu-kvm: vhost vdpa map fail!
2021-08-05T09:51:47.692594Z qemu-kvm: vhost-vdpa: DMA mapping failed, unable to continue
The current memlock limit calculation does not work for scenarios where
there are multiple such devices assigned to a guest. The root causes are
a little bit different between VFIO and VDPA devices.
For VFIO devices, the issue only occurs when a vIOMMU is present. In
this scenario, each vfio device is assigned a separate AddressSpace
fully mapping guest RAM. When there is no vIOMMU, the devices are all
within the same AddressSpace so no additional memory limit is needed.
For VDPA devices, each device requires the full memory to be mapped
regardless of whether there is a vIOMMU or not.
In order to enable these scenarios, we need to multiply memlock limit
by the number of VDPA devices plus the number of VFIO devices for guests
with a vIOMMU. This has the potential for pushing the memlock limit
above the host physical memory and negating any protection that these
locked memory limits are providing, but there is no other short-term
solution.
In the future, there should be have a revised userspace iommu interface
(iommufd) that the VFIO and VDPA backends can make use of. This will be
able to share locked memory limits between both vfio and vdpa use cases
and address spaces and then we can disable these short term hacks. But
this is still in development upstream.
Resolves: https://bugzilla.redhat.com/2111317
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Xen toolstack has gained basic Virtio support recently which becides
adding various virtio related stuff introduces new disk backend type
LIBXL_DISK_BACKEND_STANDALONE [1].
Unfortunately, this caused a regression in libvirt build with Xen support
enabled, reported by the osstest today [2]:
CC libxl/libvirt_driver_libxl_impl_la-xen_xl.lo
../../src/libxl/xen_xl.c: In function 'xenParseXLDisk':
../../src/libxl/xen_xl.c:779:17: error: enumeration value 'LIBXL_DISK_BACKEND_STANDALONE'
not handled in switch [-Werror=switch-enum]
switch (libxldisk->backend) {
^~~~~~
cc1: all warnings being treated as errors
The interesting fact is that switch already has a default branch (which ought
to cover such new addition), but the error is triggered as -Wswitch-enum
gives a warning about an omitted enumeration code even if there is a default
label.
Also there is a similar issue in libxlUpdateDiskDef() which I have reproduced
after fixing the first one, but it that case the corresponding switch doesn't
have a default branch.
Fix both issues by inserting required enumeration item to make the compiler
happy and adding ifdef guard to be able to build against old Xen libraries
as well (without LIBXL_HAVE_DEVICE_DISK_SPECIFICATION). Also add a default
branch to switch in libxlUpdateDiskDef().
Please note, that current patch doesn't implement the proper handling of
LIBXL_DISK_BACKEND_STANDALONE and friends, it is just intended to fix
the regression immediately to unblock the osstest. Also it worth mentioning
that current patch won't solve the possible additions in the future.
[1] https://lore.kernel.org/xen-devel/20220716163745.28712-1-olekstysh@gmail.com/
[2] https://lore.kernel.org/xen-devel/E1oHEQO-0008GA-Uo@osstest.test-lab.xenproject.org/
Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that we no longer care about any of their properties, there's no need
to call `device-list-properties` on these devices.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Introduced back in 2013 by QEMU commit:
commit 398489018183d613306ab022653552247d93919f
pc: limit 64 bit hole to 2G by default
Released in 1.6.0
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Introduced back in 2012 by QEMU commit:
commit 783e9b4826b95e53e33c42db6b4bd7d89bdff147
introduce a new monitor command 'dump-guest-memory' to dump guest's memory
Released in QEMU 1.2.0
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The DYLD_* environment variables on macOS have the same purpose
as the LD_* variables have on Linux. Since we're preserving the
latter by default, it makes sense to do the same for the former
as well.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Historically, the tpm->data.emulator.activePcrBanks member was an
unsigned int but since it was used as a bitmap it was converted
to virBitmap type instead. Now, the virBitmap is allocated inside
of virDomainTPMDefParseXML() but only if <activePcrBanks/> was
found with at last one child element. Otherwise it stays NULL.
Fast forward to starting a domain with TPM 2.0 and no
<activePcrBanks/> configured. Eventually,
qemuTPMEmulatorBuildCommand() is called, which subsequently calls
qemuTPMEmulatorReconfigure() and finally
qemuTPMPcrBankBitmapToStr() passing the NULL value. Before
rewrite to virBitmap this function would return NULL for empty
activePcrBanks but now, well, now it crashes.
Fixes: 52c7c31c80
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This patch uses qemuMonitorQueryStats to query "halt_poll_success_ns"
and "halt_poll_fail_ns" for every vCPU. The respective values for each
vCPU are then added together.
Signed-off-by: Amneesh Singh <natto@weirdnatto.in>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Related: https://gitlab.com/libvirt/libvirt/-/issues/276
This patch adds an API for the "query-stats" QMP command.
The query returns a JSON containing the statistics based on the target,
which can either be vCPU or VM, and the providers. The API deserializes
the query result into an array of GHashMaps, which can later be used to
extract all the query statistics. GHashMaps are used to avoid traversing
the entire array to find the statistics you are looking for. This would
be a singleton array if the target is a VM since the returned JSON is
also a singleton array in that case.
Signed-off-by: Amneesh Singh <natto@weirdnatto.in>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Since we cannot properly plug a new VM into the distributed switch, we can at
least report the provided pieces of information, so that XML editing still works
even for VMs with such interfaces.
https://bugzilla.redhat.com/show_bug.cgi?id=1988211
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Reviewed-by: Ján Tomko <jtomko@redhat.com>
This represents an interface connected to a VMWare Distributed Switch,
previously obscured as a dummy interface.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit 70768cda97 marked this particular config string optional, but
forgot that two of the interface types still require this name to
exist. Mark it as optional only if there is no connectionType.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Reviewed-by: Ján Tomko <jtomko@redhat.com>
This makes it nicer to use as since it cannot fail shortens the usage in all
callers.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Reviewed-by: Ján Tomko <jtomko@redhat.com>
The output of "virsh capabilities" was not conformant to the
capability.rng schema. Add the missing element to the schema.
Fixes: c647bf29af
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The change to caps-test.xml demonstrates the need for the change to
cputypes.rng.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The hostcpu rng has an optional "model" element, with the remaining
elements each within a nested optional. Remove the optional nesting
and have each element explicitly listed as optional
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Introduced back in 2010 by QEMU commit:
commit a697a334b3c4d3250e6420f5d38550ea10eb5319
virtio-net: Introduce a new bottom half packet TX
Released in QEMU 0.14.0
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
All callers pass 'true'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The blockdev-backup QMP command was introduced in qemu-2.3.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The event was introduced in qemu-2.3
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Set it same way we set throttling for other disks in
qemuProcessSetupDiskThrottling.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
While we assume that -blockdev is supported the validator had also some
corner cases for -drive. Since we use '-drive' exclusively for the
extremely rarely used SD cards it makes no sense to have the validation.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
