Biggest change is that AioContext locking got removed, but no changes
required other than dropping the calls to acquire and release it. As a
consequence, the single parameter for the bdrv_graph_wrlock() call got
removed which also required adaptation.
QAPI docs became stricter requiring to document all members.
Other minor changes:
- Single parameter from migration_is_running() was dropped.
- qemu_mutex_(un)lock_iothread() got renamed to bql_(un)lock().
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This version includes both the AioContext lock and the block graph
lock, so there might be some deadlocks lurking. It's not possible to
disable the block graph lock like was done in QEMU 8.1, because there
are no changes like the function bdrv_schedule_unref() that require
it. QEMU 9.0 will finally get rid of the AioContext locking.
During live-restore with a VirtIO SCSI drive with iothread there is a
known racy deadlock related to the AioContext lock. Not new [1], but
not sure if more likely now. Should be fixed in QEMU 9.0.
The block graph lock comes with annotations that can be checked by
clang's TSA. This required changes to the block drivers, i.e.
alloc-track, pbs, zeroinit as well as taking the appropriate locks
in pve-backup, savevm-async, vma-reader.
Local variable shadowing is prohibited via a compiler flag now,
required slight adaptation in vma.c.
Major changes only affect alloc-track:
* It is not possible to call a generated co-wrapper like
bdrv_get_info() while holding the block graph lock exclusively [0],
which does happen during initialization of alloc-track when the
backing hd is set and the refresh_limits driver callback is invoked.
The bdrv_get_info() call to get the cluster size is moved to
directly after opening the file child in track_open().
The important thing is that at least the request alignment for the
write target is used, because then the RMW cycle in bdrv_pwritev
will gather enough data from the backing file. Partial cluster
allocations in the target are not a fundamental issue, because the
driver returns its allocation status based on the bitmap, so any
other data that maps to the same cluster will still be copied later
by a stream job (or during writes to that cluster).
* Replacing the node cannot be done in the
track_co_change_backing_file() callback, because it is a coroutine
and cannot hold the block graph lock exclusively. So it is moved to
the stream job itself with the auto-remove option not having an
effect anymore (qemu-server would always set it anyways).
In the future, there could either be a special option for the stream
job, or maybe the upcoming blockdev-replace QMP command can be used.
Replacing the backing child is actually already done in the stream
job, so no need to do it in the track_co_change_backing_file()
callback. It also cannot be called from a coroutine. Looking at the
implementation in the qcow2 driver, it doesn't seem to be intended
to change the backing child itself, just update driver-internal
state.
Other changes:
* alloc-track: Error out early when used without auto-remove. Since
replacing the node now happens in the stream job, where the option
cannot be read from (it's internal to the driver), it will always be
treated as 'on'. Makes sure to have users beside qemu-server notice
the change (should they even exist). The option can be fully dropped
in the future while adding a version guard in qemu-server.
* alloc-track: Avoid seemingly superfluous child permission update.
Doesn't seem necessary nowadays (maybe after commit "alloc-track:
fix deadlock during drop" where the dropping is not rescheduled and
delayed anymore or some upstream change). Replacing the block node
will already update the permissions of the new node (which was the
file child before). Should there really be some issue, instead of
having a drop state, this could also be just based off the fact
whether there is still a backing child.
Dumping the cumulative (shared) permissions for the BDS with a debug
print yields the same values after this patch and with QEMU 8.1,
namely 3 and 5.
* PBS block driver: compile unconditionally. Proxmox VE always needs
it and something in the build process changed to make it not enabled
by default. Probably would need to move the build option to meson
otherwise.
* backup: job unreferencing during cleanup needs to happen outside of
coroutine, so it was moved to before invoking the clean
* mirror: Cherry-pick stable fix to avoid potential deadlock.
* savevm-async: migrate_init now can fail, so propagate potential
error.
* savevm-async: compression counters are not accessible outside
migration/ram-compress now, so drop code that prophylactically set
it to zero.
[0]: https://lore.kernel.org/qemu-devel/220be383-3b0d-4938-b584-69ad214e5d5d@proxmox.com/
[1]: https://lore.kernel.org/qemu-devel/e13b488e-bf13-44f2-acca-e724d14f43fd@proxmox.com/
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Backported from commit bfa36802d1 ("virtio-blk: avoid using ioeventfd
state in irqfd conditional") because the rework/rename dataplane ->
ioeventfd didn't happen yet.
Reported in the community forum [0] and reproduced doing a backup loop
to PBS with suspend mode with fio doing heavy IO in the guest and
using an RBD storage (with krbd).
[0]: https://forum.proxmox.com/threads/141320
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
In many configurations, e.g. multiple vNICs with multiple queues or
with many Ceph OSDs, the default soft limit of 1024 is not enough.
QEMU is supposed to work fine with file descriptors >= 1024 and does
not use select() on POSIX. Bump the soft limit to the allowed hard
limit to avoid issues with the aforementioned configurations.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
This essentially repeats commit 6b7c181 ("add patch to work around
stuck guest IO with iothread and VirtIO block/SCSI") with an added
fix for the SCSI event virtqueue, which requires special handling.
This is to avoid the issue [3] that made the revert 2a49e66 ("Revert
"add patch to work around stuck guest IO with iothread and VirtIO
block/SCSI"") necessary the first time around.
When using iothread, after commits
1665d9326f ("virtio-blk: implement BlockDevOps->drained_begin()")
766aa2de0f ("virtio-scsi: implement BlockDevOps->drained_begin()")
it can happen that polling gets stuck when draining. This would cause
IO in the guest to get completely stuck.
A workaround for users is stopping and resuming the vCPUs because that
would also stop and resume the dataplanes which would kick the host
notifiers.
This can happen with block jobs like backup and drive mirror as well
as with hotplug [2].
Reports in the community forum that might be about this issue[0][1]
and there is also one in the enterprise support channel.
As a workaround in the code, just re-enable notifications and kick the
virt queue after draining. Draining is already costly and rare, so no
need to worry about a performance penalty here.
Take special care to attach the SCSI event virtqueue host notifier
with the _no_poll() variant like in virtio_scsi_dataplane_start().
This avoids the issue from the first attempted fix where the iothread
would suddenly loop with 100% CPU usage whenever some guest IO came in
[3]. This is necessary because of commit 38738f7dbb ("virtio-scsi:
don't waste CPU polling the event virtqueue"). See [4] for the
relevant discussion.
[0]: https://forum.proxmox.com/threads/137286/
[1]: https://forum.proxmox.com/threads/137536/
[2]: https://issues.redhat.com/browse/RHEL-3934
[3]: https://forum.proxmox.com/threads/138140/
[4]: https://lore.kernel.org/qemu-devel/bfc7b20c-2144-46e9-acbc-e726276c5a31@proxmox.com/
Link: https://lore.kernel.org/qemu-devel/20240202153158.788922-1-hreitz@redhat.com/
Originally-by: Fiona Ebner <f.ebner@proxmox.com>
[ TL: Update to v2 and rebased patch series handling to v8.1.5 ]
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Most notable fixes from a Proxmox VE perspective are:
* "virtio-net: correctly copy vnet header when flushing TX"
To prevent a stack overflow that could lead to leaking parts of the
QEMU process's memory.
* "hw/pflash: implement update buffer for block writes"
To prevent an edge case for half-completed writes. This potentially
affected EFI disks.
* Fixes to i386 emulation and ARM emulation.
No changes for patches were necessary (all are just automatic context
changes).
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
While the patch gives bdrv_graph_wrlock() as an example where the
issue can manifest, something similar can happen even when that is
disabled. Was able to reproduce the issue with
while true; do qm resize 115 scsi0 +4M; sleep 1; done
while running
fio --name=make-mirror-work --size=100M --direct=1 --rw=randwrite \
--bs=4k --ioengine=psync --numjobs=5 --runtime=1200 --time_based
in the VM.
Fix picked up from:
https://lists.nongnu.org/archive/html/qemu-devel/2023-12/msg01102.html
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
This fixes the host->guest direction with noNVC as a client (and
likely others).
Reported-by: Friedrich Weber <f.weber@proxmox.com>
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Tested-by: Friedrich Weber <f.weber@proxmox.com>
The issue prevented FreeBSD 14 VMs with SATA disk from booting.
The commit it fixes e2a5d9b3d9c3 ("hw/ide/ahci: simplify and document
PxCI handling") is part of stable 8.1.2.
The patch was already applied to the block branch upstream:
https://lists.nongnu.org/archive/html/qemu-devel/2023-11/msg02711.html
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Tested-by: Friedrich Weber <f.weber@proxmox.com>
As reported in the community forum [0] and reproduced locally this
breaks VirtIO network adapters in (at least) the German ISO of Windows
Server 2022. The fix itself was for
> Issue is not fatal but as result acpi-index/"PCI Label ID" property
> is either not shown in device details page or shows incorrect value.
so revert and tolerate that as a stop-gap, rather than have the
devices not working at all.
[0]: https://forum.proxmox.com/threads/92094/post-605684
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Taking a snapshot became prohibitively slow because of the
migration_transferred_bytes() call in migration_rate_exceeded() [0].
This also applied to the async snapshot taking in Proxmox VE, so
work around the issue until it is fixed upstream.
[0]: https://gitlab.com/qemu-project/qemu/-/issues/1821
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Bigger notable changes:
* Commit 1a30b0f5d7 ("block: .bdrv_open is non-coroutine and
unlocked") broke the PVE backup patches, in particular setting up
the backup dump block driver, because bdrv_new_open_driver() cannot
be called from a coroutine. To fix it, bdrv_co_open() is used
instead, and while it's a much more involved function, the result
should be essentially the same. The only difference I noticed is
that the BDRV_O_ALLOW_RDWR flag is also set in the resulting bds
(block driver state), but that shouldn't hurt.
Smaller notable changes:
* aio_set_fd_handler() dropped its 'is_external' parameter stating
that all callers now pass false in 60f782b6b7 ("aio: remove
aio_disable_external() API"). The calls in the PVE patches also
passed false, so just drop the parameter too.
* global_state_store() does not have a return value anymore, so the
user in the PVE savevm-async patch was adapted. For context, see
c33f1829f8 ("migration: never fail in global_state_store()").
* Renames affecting the PVE savevm-async patch:
migrate_use_block() -> migrate_block() and ram_counters -> mig_stats
9d4b1e5f22 ("migration: Move migrate_use_block() to options.c")
aff3f6606d ("migration: Rename ram_counters to mig_stats")
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
If there is a pending DMA operation during ide_bus_reset(), the fact
that the IDEstate is already reset before the operation is canceled
can be problematic. In particular, ide_dma_cb() might be called and
then use the reset IDEstate which contains the signature after the
reset. When used to construct the IO operation this leads to
ide_get_sector() returning 0 and nsector being 1. This is particularly
bad, because a write command will thus destroy the first sector which
often contains a partition table or similar.
Upstream discussion:
https://lists.nongnu.org/archive/html/qemu-devel/2023-08/msg04239.html
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Each pause+resume operation (which is also done as part of taking a VM
snapshot) would increase the number of open file descriptors by the
number of vhost devices (e.g. network devices by default). This could
lead to crashes during backup and surely other issues once the system
limit (default 1024) was reached [0].
[0]: https://forum.proxmox.com/threads/131603/
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Not difficult to run into, just have a drive with iothread, take a PBS
backup and then take a snapshot or hibernate. Resuming will fail with
> qemu: qemu_mutex_unlock_impl: Operation not permitted
because of not acquiring the correct AioContext first.
Migration is not affected, because it runs in coroutine context.
Reported in the community forum:
https://forum.proxmox.com/threads/129899/
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
The previous version was picked from the mailing list and still had
an object_dynamic_cast call in a hot path, which is avoided with the
version that landed in git.
Also adds a few more exceptions for devices that need reentrancy.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Changes to other patches are all just metadata/context changes except
for pvebackup_co_prepare() needing to call bdrv_co_unref() rather than
bdrv_unref(), because it is a coroutine itself. This is documented in
d6ee2e324e ("block-coroutine-wrapper: Introduce no_co_wrapper"). The
change is necessary, because one of the stable fixes converts
bdrv_unref and blk_unref into no_co_wrappers (in preparation for a
second patch to fix a hang with the block resize QMP command).
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Many changes were necessary this time around:
* QAPI was changed to avoid redundant has_* variables, see commit
44ea9d9be3 ("qapi: Start to elide redundant has_FOO in generated C")
for details. This affected many QMP commands added by Proxmox too.
* Pending querying for migration got split into two functions, one to
estimate, one for exact value, see commit c8df4a7aef ("migration:
Split save_live_pending() into state_pending_*") for details. Relevant
for savevm-async and PBS dirty bitmap.
* Some block (driver) functions got converted to coroutines, so the
Proxmox block drivers needed to be adapted.
* Alloc track auto-detaching during PBS live restore got broken by
AioContext-related changes resulting in a deadlock. The current, hacky
method was replaced by a simpler one. Stefan apparently ran into a
problem with that when he wrote the driver, but there were
improvements in the stream job code since then and I didn't manage to
reproduce the issue. It's a separate patch "alloc-track: fix deadlock
during drop" for now, you can find the details there.
* Async snapshot-related changes:
- The pending querying got adapted to the above-mentioned split and
a patch is added to optimize it/make it more similar to what
upstream code does.
- Added initialization of the compression counters (for
future-proofing).
- It's necessary the hold the BQL (big QEMU lock = iothread mutex)
during the setup phase, because block layer functions are used there
and not doing so leads to racy, hard-to-debug crashes or hangs. It's
necessary to change some upstream code too for this, a version of
the patch "migration: for snapshots, hold the BQL during setup
callbacks" is intended to be upstreamed.
- Need to take the bdrv graph read lock before flushing.
* hmp_info_balloon was moved to a different file.
* Needed to include a new headers from time to time to still get the
correct functions.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
When turning off the "KVM hardware virtualization" checkbox in Proxmox
VE, the TCG accelerator is used, so these fixes are relevant then.
The first patch is included to allow cherry-picking the others without
changes.
Reported-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Required for the debian/edk2-vars-generator.py script in the
pve-edk2-firmware repository when building the edk2-stable202302
release. Without this patch, the QEMU process spawned by the script
would hang indefinietly.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
The patch 0008-memory-prevent-dma-reentracy-issues.patch introduced a
regression for the LSI SCSI controller leading to boot failures [0],
because, in its current form, it relies on reentrancy for a particular
ram_io region.
[0]: https://forum.proxmox.com/threads/123843
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
The patches were selected from the recent "Patch Round-up for stable
7.2.1" [0]. Those that should be relevant for our supported use-cases
(and the upcoming nvme use-case) were picked. Most of the patches
added now have not been submitted to qemu-stable before.
The follow-up for the virtio-rng-pci migration fix will break
migration between versions with the fix and without the fix when a
virtio-pci-rng(-non)-transitional device is used. Luckily Proxmox VE
only uses the virtio-pci-rng device, and this was fixed by
0006-virtio-rng-pci-fix-migration-compat-for-vectors.patch which was
applied before any public version of Proxmox VE's QEMU 7.2 package was
released.
[0]: https://lists.nongnu.org/archive/html/qemu-stable/2023-03/msg00010.html
[1]: https://bugzilla.redhat.com/show_bug.cgi?id=2162569
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
The patch was incomplete and (re-)introduced an issue with a potential
failing assertion upon cancelation of the DMA request.
There is a patch on qemu-devel now[0], and it's the same as this one
code-wise (except for comments). But the discussion is still ongoing.
While there shouldn't be a real issue with the patch, there might be
better approaches. The plan is to use this as a stop-gap for now and
pick up the proper solution once it's ready.
[0]: https://lists.nongnu.org/archive/html/qemu-devel/2023-03/msg03325.html
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
In particular, the deadlock can occur, together with unlucky timing
between the QEMU threads, when the guest is issuing trim requests
during the start of a backup operation.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
[ T: resolve trivial merge conflict in series file ]
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
between QEMU less than 7.2 and QEMU 7.2 without the fix (both
directions are affected).
As mentioned in the patch message, this fix itself will break
migration between QEMU 7.2 and QEMU 7.2 with the fix (in both
directions, if a virtio-rng device is attached), but this is fine,
because no pve-qemu-kvm package with QEMU 7.2 has been publicly
released yet.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Two for virtio-mem and one for vIOMMU. Both features are not yet
exposed in PVE's qemu-server, but planned to be added.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
User-facing breaking change:
The slirp submodule for user networking got removed. It would be
necessary to add the --enable-slirp option to the build and/or install
the appropriate library to continue building it. Since PVE is not
explicitly supporting it, it would require additionally installing the
libslirp0 package on all installations and there is *very* little
mention on the community forum when searching for "slirp" or
"netdev user", the plan is to only enable it again if there is some
real demand for it.
Notable changes:
* The big change for this release is the rework of job locking, using
a job mutex and introducing _locked() variants of job API functions
moving away from call-side AioContext locking. See (in the qemu
submodule) commit 6f592e5aca ("job.c: enable job lock/unlock and
remove Aiocontext locks") and previous commits for context.
Changes required for the backup patches:
* Use WITH_JOB_LOCK_GUARD() and call the _locked() variant of job
API functions where appropriate (many are only availalbe as
a _locked() variant).
* Remove acquiring/releasing AioContext around functions taking the
job mutex lock internally.
The patch introducing sequential transaction support for jobs needs
to temporarily unlock the job mutex to call job_start() when
starting the next job in the transaction.
* The zeroinit block driver now marks its child as primary.
The documentation in include/block/block-common.h states:
> Filter node has exactly one FILTERED|PRIMARY child, and may have
> other children which must not have these bits
Without this, an assert will trigger when copying to a zeroinit target
with qemu-img convert, because bdrv_child_cb_attach() expects any
non-PRIMARY child to be not FILTERED:
> qemu-img convert -n -p -f raw -O raw input.raw zeroinit:output.raw
> qemu-img: ../block.c:1476: bdrv_child_cb_attach: Assertion
> `!(child->role & BDRV_CHILD_FILTERED)' failed.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
albeit I was short from disarming that GLOBAL_STATE_CODE assert
completely, as its just bogus to assert that on runtime for a lot of
call sites, rather it should be verified on compilation (function
coloring with attributes and maybe a compiler plugin).
But, as this is already solved upstream lets take in that patch.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
fixes file restore, where we actively unlink the PID file of the
transient VM ourself after opening it - while we use it only for
tracking when the QEMU process itself has finished start up, it's
easier and cleaner to fix this regression now, than to rework that to
something that doesn't depends on the PID file at all.
Applying Fiona's patch as patch-patch tracked under extra, as I
expect that something similar to this gets accepted upstreamed.
Link: https://lists.proxmox.com/pipermail/pve-devel/2022-October/054448.html
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Notable changes:
* The only big change is the switch to using a custom QIOChannel for
savevm-async, because the previously used QEMUFileOps was dropped.
Changes to the current implementation:
* Switch to vector based methods as required for an IO channel. For
short reads the passed-in IO vector is stuffed with zeroes at the
end, just to be sure.
* For reading: The documentation in include/io/channel.h states that
at least one byte should be read, so also error out when whe are
at the very end instead of returning 0.
* For reading: Fix off-by-one error when request goes beyond end.
The wrong code piece was:
if ((pos + size) > maxlen) {
size = maxlen - pos - 1;
}
Previously, the last byte would not be read. It's actually
possible to get a snapshot .raw file that has content all the way
up the final 512 byte (= BDRV_SECTOR_SIZE) boundary without any
trailing zero bytes (I wrote a script to do it).
Luckily, it didn't cause a real issue, because qemu_loadvm_state()
is not interested in the final (i.e. QEMU_VM_VMDESCRIPTION)
section. The buffer for reading it is simply freed up afterwards
and the function will assume that it read the whole section, even
if that's not the case.
* For writing: Make use of the generated blk_pwritev() wrapper
instead of manually wrapping the coroutine to simplify and save a
few lines.
* Adapt to changed interfaces for blk_{pread,pwrite}:
* a9262f551e ("block: Change blk_{pread,pwrite}() param order")
* 3b35d4542c ("block: Add a 'flags' param to blk_pread()")
* bf5b16fa40 ("block: Make blk_{pread,pwrite}() return 0 on success")
Those changes especially affected the qemu-img dd patches, because
the context also changed, but also some of our block drivers used
the functions.
* Drop qemu-common.h include: it got renamed after essentially
everything was moved to other headers. The only remaining user I
could find for things dropped from the header between 7.0 and 7.1
was qemu_get_vm_name() in the iscsi-initiatorname patch, but it
already includes the header to which the function was moved.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
For the io_uring patch, it's not very clear which configurations can
trigger it, but it should be rather uncommon. See qemu commit
be6a166fde652589761cf70471bcde623e9bd72a for a bit more information.
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
coming in via qemu-stable (except for the vdmk fix, which was tagged
for-7.0 on the qemu-devel list, but didn't make it into the release).
Also took the chance to switch the gluster fix to the version that
made it into upstream.
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Only very minor changes needed:
* Most patches in extra (or some version of them) are part of 7.0.0.
* aio_set_fd_handler got an extra parameter, but can just pass NULL
like we did for the related 'poll' parameter. See QEMU commit
826cc32423db2a99d184dbf4f507c737d7e7a4ae for more.
* Add include for qemu/memalign.h in vma.c and vma-writer.c.
* Add reverts for fixups of already reverted 0347a8fd4c ("block/rbd:
implement bdrv_co_block_status") that came in with 7.0.0. Those
fixups are not enough, see Proxmox bugzilla #4047.
* Two trivial context changes for bitmap-mirror patches.
* block_int.h got split up into multiple headers.
* Some context changes in configure and meson.build.
* Used the oppurtunity to squash fixup of bdrv_backuo_dump_create typo
in a later patch into the patch introducing the function (had to
move code to new header during rebase).
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Notable changes:
* bdrv_co_p{discard,readv,writev,write_zeroes} function signatures
changed, to using int64_t for offsets/bytes and some still had int
rather than BrdvRequestFlags for the flags.
* job_cancel_sync now has a force parameter. Commit messages in
73895f3838cd7fdaf185cf1dbc47be58844a966f
4cfb3f05627ad82af473e7f7ae113c3884cd04e3
sound like using force=true makes more sense.
* Added 3 patches coming in via qemu-stable tag, most important one is
to work around a librbd issue.
* Added another 3 patches from qemu-devel to fix issue leading to
crash when live migrating with iothread.
* cluster_size calculation helper changed (see patch pve/0026).
* QAPI's if conditionals now use 'CONFIG_FOO' rather than
'defined(CONFIG_FOO)'
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
which fixes the bad commit 18473467d55a20d643b6c9b3a52de42f705b4d35
that was tracked down via bisecting, and has a Cc for qemu-stable as
well.
Issue was easy enough to reproduce with a single virtio-block disk
using a few runs of dd if=/dev/urandom of=file bs=1M count=1000
Commit cc071629539dc1f303175a7e2d4ab854c0a8b20f upstream.
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
