Commit Graph

34450 Commits

Author SHA1 Message Date
Marc-André Lureau
e595c4e916 qemu-security: add qemuSecurityCommandRun()
Add a generic way to run a command through the security management.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-09-06 12:47:47 +02:00
Marc-André Lureau
13e6083efa qemu: reset VM id after external devices stop
pid filenames (from swtpm and other helpers from this series) are
based on VM shortname, which is derived from VM id. If the id is reset
to early, the state filenames will not be found.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-09-06 12:47:47 +02:00
Marc-André Lureau
2078be3e46 qemu: add dbus-vmstate capability
This object is being proposed to qemu upstream "Add dbus-vmstate
object". It handles data migration of external processes.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-09-06 12:47:47 +02:00
Marc-André Lureau
0cebb6422a qemu: add socket datagram capability
Datagram socket is available since qemu 4.0, commit
fdec16e3c2a614e2861f3086b05d444b5d8c3406 ("net/socket: learn to talk
with a unix dgram socket").

Required for slirp-helper communication.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-09-06 12:47:47 +02:00
Marc-André Lureau
861882d314 qemu: replace logCtxt with qemuDomainLogAppendMessage()
Once QEMU is started, the qemuDomainLogContext is owned by it, and can
no longer be used from libvirt. Instead, use
qemuDomainLogAppendMessage() which will redirect the log.

This is not strictly necessary for swtpm, but the following patches
are going to reuse qemuExtDeviceLogCommand().

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-09-06 12:47:46 +02:00
Marc-André Lureau
39dded7bb6 dbus: correctly build reply message
dbus_message_new() does not construct correct replies by itself, it is
recommended to use dbus_message_new_method_return() instead.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-09-06 12:47:46 +02:00
Marc-André Lureau
16e81dd3b3 tests: fix xml2xml tpm-emulator.xml test
It is failing, because it ends up being parsed with version='default'
and expects '1.2' instead.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-09-06 12:47:46 +02:00
Marc-André Lureau
92030a857d Add .editorconfig
Consistent code style across editors.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-09-06 12:47:46 +02:00
Peter Krempa
10c532274b qemu: qapi: Limit traversal depth for QAPI schema queries
Implicitly the query depth is limited by the length of the QAPI schema
query, but 'alternate' and 'array' QAPI meta-types don't consume a part
of the query string thus a loop on such types would get our traversal
code stuck in an infinite loop. Prevent this from happening by limiting
the nesting depth to 1000.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-09-06 12:14:29 +02:00
Jonathon Jongsma
9f90a4bfb4 qemu: maintain user alias for video type 'none'
After parsing a video device with a model type of
VIR_DOMAIN_VIDEO_TYPE_NONE, all device info is cleared (see
virDomainDefPostParseVideo()) in order to avoid formatting any
auto-generated values for the XML. Subsequently, however, an alias is
generated for the video device (e.g. 'video0'), which results in an
alias property being formatted in the XML output anyway. This creates
confusion if the user has explicitly provided an alias for the video
device since the alias will change.

To avoid this, don't clear the user-defined alias for video devices of
type "none".

https://bugzilla.redhat.com/show_bug.cgi?id=1720612

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2019-09-06 10:22:47 +02:00
Pavel Hrdina
0bd4ad193d vircgroupv2: fix setting cpu.max period
When we set cpu.max period we need to parse the cpu.max file first as
it contains both quota and period values separated by space.  When only
a single number is written to that file it will set quota.  However,
in order to change period we need to write both values.

The code was prepared for that but mistakenly used new line to end the
string with the first value.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1749227

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2019-09-06 09:24:43 +02:00
Peter Krempa
0ca18ebadc qemu: migration: Switch to blockdev mode for non-shared storage migration
When blockdev is used we always should use the blockdev mode for
non-shared storage migration.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
8017347549 qemu: migration: Refactor cleanup in qemuMigrationSrcNBDStorageCopy
Use VIR_AUTOUNREF and remove the cleanup label.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
b25956fbfd qemu: migration: Refactor cleanup in qemuMigrationSrcNBDStorageCopyDriveMirror
Use VIR_AUTOFREE and remove the cleanup label.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
e9f7842736 qemu: migration: Refactor cleanup in qemuMigrationSrcNBDStorageCopyBlockdev
Remove the cleanup label as it's empty.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
a6aad9f29f qemu: Defer support checks for external active snapshots to blockdev code or qemu
Remove libvirt's support check for the target of an external snapshot to
the blockdev code or qemu. This will potentially require a more complex
cleanup but removes a level of hardcoded feature checks.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
a3f8abb003 qemu: Add -blockdev support for external snapshots
Use the code for creating or attaching new storage source in the
snapshot code and switch to 'blockdev-snapshot' for creating the
snapshot itself.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
b2904cb87b qemu: snapshot: Skip overlay file creation/interogation if unsupported
With blockdev we'll be able to support protocols which are not supported
by the storage backends in libvirt. This means that we have to be able
to skip the creation and relative storage path reading if it's not
supported. This will make it impossible to use relative backing for
network protocols but that would be almost insane anyways.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
e3189f7c0a qemu: Merge use of 'reuse' flag in qemuDomainSnapshotDiskPrepareOne
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
fd8e55ca93 qemu: Disband qemuDomainSnapshotCreateSingleDiskActive
After we always assume support for the 'transaction' command
(c358adc571) and follow-up cleanups
qemuDomainSnapshotCreateSingleDiskActive lost its value. Move the code
into appropriate helpers and remove the function.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
0d1622a1f4 qemu: snapshot: Rename external disk snapshot handling functions
Fix and unify the naming of external snapshot preparation functions.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
e1b61f2cd5 qemu: snapshot: Move error preservation to qemuDomainSnapshotDiskDataCleanup
Make qemuDomainSnapshotDiskDataCleanup cleanup section friendly by
moving the error preservation code inside it.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
93a0f72ef4 qemu: snapshot: Save status and config XMLs only on success
We changed to always saving the status and config XMLs to simplify
code. After a few more refactors it's now possible to move it to the
appropriate place and save the XMLs only on success again.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
e0720fda12 qemu: snapshot: Fix image lock handling when taking a snapshot
When we take a snapshot we must properly remove our locking
infrastructure locks. This was broken by commit 3817fa10c4 which
attempted to properly track the readonly state for the image as the
locking code was executed after this change. Since we forced the image
which was locked as read-write to read-only prior to unlocking it the
write lock was not dropped.

Fix it by moving the locking code prior to modifying the readonly flag.

https://bugzilla.redhat.com/show_bug.cgi?id=1745618

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
805b4aa2e9 qemu: driver: Fix shallow non-reuse block copy
The code preparing data for creating/attaching the target image of block
copy didn't use the correct reference to the existing backing chain in
case when the copy should inherit it. This meant that qemu actually
opened a second copy of the chain and operated on that.

This would de-sync qemu from libvirt's view of node names. Luckily this
is only hypothetical at this point since it happens only when -blockdev
is enabled.

Fix it by passing 'mirrorBacking' which has the proper data as the
backing store when calling
qemuBuildStorageSourceChainAttachPrepareBlockdevTop.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
b5e7460b23 qemu: Explicitly pass backing store to qemuBuildStorageSourceChainAttachPrepareBlockdevTop
In some cases we'll need to pass in a backing store which is not
recorded as the backing store of @src. Export backingStore as variable
and fix all callers to pass in the backing store. No semantic changes
for now.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
7b47a8f814 qemu: block: explicitly pass backing store to qemuBlockStorageSourceAttachPrepareBlockdev
Pass backing store as an argument rather than extracting it locally and
fix the callers.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
eee85c2349 qemu: command: Refactor qemuBuildStorageSourceChainAttachPrepareBlockdevInternal
Extract the loop and supporting infrastructure to the caller as only one
of the two callers actually cares about looping and rename the helper to
qemuBuildStorageSourceChainAttachPrepareBlockdevOne.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
a7643da82e qemu: block: Explicitly specify backingStore when creating format layer props
Pass in backing store explicitly to qemuBlockStorageSourceGetBlockdevProps
and fix the callers.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
d6f1116091 qemu: block: Unify conditions to format backing store of format node definition
Move all bits of the formatting of the 'backing' attribute to a single
condition and make it use a single extracted copy of the backing store.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
510d154a0b qemu: Prevent storage causing too much nested XML
Since libvirt stores the backing chain into the XML in a nested way it
is the prime possibility to hit libxml2's parsing limit of 256 layers.

Introduce code which will crawl the backing chain and verify that it's
not too deep. The maximum nesting is set to 200 layers so that there's
still some space left for additional properties or nesting into snapshot
XMLs.

The check is applied to all disk use cases (starting, hotplug, media
change) as well as block copy which changes image and snapshots.

We simply report an error and refuse the operation.

Without this check a restart of libvirtd would result in the status XML
failing to be parsed and thus losing the VM.

https://bugzilla.redhat.com/show_bug.cgi?id=1524278

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
7d60b1f45f qemu: domain: Refactor cleanup in qemuDomainDetermineDiskChain
Use VIR_AUTOUNREF and get rid of the cleanup label.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
3fbaf0587c qemu: hotplug: Setup disk throttling with blockdev
With blockdev we must issue the block_set_io_throttle QMP command to
setup disk throttling as we currently can't do it with the 'throttle'
layer.

Unfortunately there's nothing we can do if it fails.

https://bugzilla.redhat.com/show_bug.cgi?id=1733163

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
f2ac23f245 qemu: hotplug: Use VIR_AUTOFREE in qemuDomainAttachDiskGeneric
Get rid of the last manually freed var.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Peter Krempa
5ef886e9bc qemu: hotplug: Simplify cleanup in qemuDomainChangeMediaLegacy
Switch to using VIR_AUTOFREE and remove the cleanup label.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-06 08:12:21 +02:00
Jiri Denemark
f709377301 qemu: Fix qemuDomainObjTaint with virtlogd
When virtlogd is used to capture QEMU's stdout, qemuDomainObjTaint would
always fail to write the message to the log file when QEMU is already
running (i.e., outside qemuProcessLaunch). This can happen during device
hotplug or by sending a custom QEMU guest agent command:

    warning : qemuDomainObjTaint:8757 : Domain id=9 name='blaf'
        uuid=9cfa4e37-2930-405b-bcb4-faac1829dad8 is tainted:
        custom-ga-command
    error : virLogHandlerDomainOpenLogFile:388 : Cannot open log file:
        '/var/log/libvirt/qemu/blaf.log': Device or resource busy
    error : virNetClientProgramDispatchError:172 : Cannot open log file:
        '/var/log/libvirt/qemu/blaf.log': Device or resource busy

The fix is easy, we just need to use the right API for appending a
message to QEMU log file instead of creating a new log context.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-05 17:09:34 +02:00
Cole Robinson
267699a03c conf: domain: Fix tpm <encryption> comment
The attribute is named 'secret', not 'uuid'

Signed-off-by: Cole Robinson <crobinso@redhat.com>
2019-09-04 13:32:31 -04:00
Daniel P. Berrangé
43dee65767 news: rewording wrt NSS, virt-login-shell & split daemons
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-09-04 09:03:43 +01:00
Peter Krempa
a59cb27360 qemu: monitor: Fix formatting of 'offset' in qemuMonitorJSONSaveMemory
The offset is unsigned long long thus 'U' must be used.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-04 09:13:49 +02:00
Peter Krempa
5dc567f80a tests: qemublock: Use bigger numbers as dummy capacity/physical
Actually test that the full range is available.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-04 09:13:49 +02:00
Peter Krempa
f009ad6740 qemu: block: Use correct type when creating image size JSON entries
The 'u' modifier creates an unsigned int JSON attribute but the disk size
and capacity fields are unsigned long long. If the size of the created
image would be more than 4GiB we'd overflow and create sub-4G image.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-09-04 09:13:49 +02:00
Jim Fehlig
37acc5fab2 news: Mention removal of xenapi driver
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-09-03 15:39:28 -06:00
Jim Fehlig
2171442d62 xenapi: remove driver
The xenapi driver has not seen any development since its initial
contribution 9 years ago. There have been no bug reports, no patches,
and no queries about the driver on the developer or user mailing lists.
Remove the driver from the libvirt sources.

Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-09-03 15:37:54 -06:00
Jim Fehlig
357ce1e30c maint: Post-release version bump to 5.8.0
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
2019-09-03 15:19:22 -06:00
Daniel Veillard
ca33d17472 Release of libvirt 5.7.0
* docs/news.xml: updated for release

Signed-off-by: Daniel Veillard <veillard@redhat.com>
2019-09-03 17:19:02 +02:00
Daniel P. Berrangé
5cb3e38acb news: document new libxml version requirement
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-09-03 16:07:35 +01:00
Peter Krempa
ed7e342b0a qemu: domain: Fix potential NULL deref when parsing job private data
A specially crafted XML which would reference a non-existing disk but
request the mirror to be registered with the blockjob could potentially
make the parser dereference NULL. Fix it by moving the code slightly and
just treat it as a wrong job XML. Found by Coverity.

Reported-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-09-03 14:38:34 +02:00
Michal Privoznik
dfd33c1ffb news: Update for 5.7.0 release
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
2019-09-03 14:25:28 +02:00
Jiri Denemark
147dc33b8b news: Rename --precopy-bandwidth migration option
The (pre-copy) bandwidth was historically the only bandwidth we
supported and thus it is called just "bandwidth" in all other places.
E.g., virsh migrate-setspeed or in the migration typed parameter name.
Let's make the new option for virsh migrate consistent.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-09-02 18:26:25 +02:00
Jiri Denemark
f4bdd82977 virsh: Rename --precopy-bandwidth migration option
The (pre-copy) bandwidth was historically the only bandwidth we
supported and thus it is called just "bandwidth" in all other places.
E.g., virsh migrate-setspeed or in the migration typed parameter name.
Let's make the new option for virsh migrate consistent.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-09-02 18:26:25 +02:00