QEMU gained support for PipeWire audio backend (see QEMU commit
of v8.0.0-403-gc2d3d1c294). Its configuration knobs are basically
the same as pulseaudio's, except for PA's server name. Therefore,
a lot of code is copied over from pulseadio and fixed by
s/Pulse/Pipewire/ or s/pulseaudio/pipewire/.
There's one ley difference to PA though: pipewire daemon is
usually on per user basis (just like our qemu:///session).
Therefore, introduce this 'runtimeDir' attribute, which allows
specifying path to pipewire daemon socket (useful for
qemu:///system for instance).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If any of the images in a chain above a raw image have bitmaps, libvirt
would attempt to merge them when doing a block commit or block copy
operation, which would result into a error in the logs as creating
persistent bitmaps in a raw image is not supported.
Since libvirt cares only about persistent bitmaps we can simply skip the
operation if the target of a block copy or block commit is a raw image.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The VM will require access also to the detected images. Unfortunately a
recent reordering of the code introduced a bug where the backing chain
was probed after setting up cgroups/selinux/namespaces, which caused
that any detected images were not allowed/added and qemu was then not
able to use them.
Fixes: 9b8bb536ff
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The virDomainMemoryDefCheckConflict() already does the same set
of checks. There's no need to duplicate them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
While glibc provides qsort(), which usually is just a mergesort,
until sorting arrays so huge that temporary array used by
mergesort would not fit into physical memory (which in our case
is never), we are not guaranteed it'll use mergesort. The
advantage of mergesort is clear - it's stable. IOW, if we have an
array of values parsed from XML, qsort() it and produce some
output based on those values, we can then compare the output with
some expected output, line by line.
But with newer glibc this is all history. After [1], qsort() is
no longer mergesort but introsort instead, which is not stable.
This is suboptimal, because in some cases we want to preserve
order of equal items. For instance, in ebiptablesApplyNewRules(),
nwfilter rules are sorted by their priority. But if two rules
have the same priority, we want to keep them in the order they
appear in the XML. Since it's hard/needless work to identify
places where stable or unstable sorting is needed, let's just
play it safe and use stable sorting everywhere.
Fortunately, glib provides g_qsort_with_data() which indeed
implement mergesort and it's a drop in replacement for qsort(),
almost. It accepts fifth argument (pointer to opaque data), that
is passed to comparator function, which then accepts three
arguments.
We have to keep one occurance of qsort() though - in NSS module
which deliberately does not link with glib.
1: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=03bf8357e8291857a435afcc3048e0b697b6cc04
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Originally the disk hotplug code didn't know how to attach a CD-ROM
drive, thus didn't have the necessary logic to handle empty cdroms.
Other disks can't be empty which is enforced by the parser validation
logic.
When support for hotplugging cdroms was added the code was not adjusted
to deal with empty drives thus attempted to setup the blockdev backend
for it.
Fixes: 3078799fef
Resolves: https://issues.redhat.com/browse/RHEL-16870
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit allowing hotplug of CDROMs moved the logic forbidding the hotplug
to the appropriate blocks based on the disk frontend but forgot to
actually bail out on such error.
Fixes: 3078799fef
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When I've originally refactored the function in commit 0d981bcefc
the logic was still correct, but then later in commit 52f8655439
I've moved most of the image setup logic into the function neglecting to
add the 'goto cleanup;' needed to skip over the setup of the disk
images.
Fixes: 52f8655439
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reword the error message to clearly state that the machine type doesn't
support the address type. It doesn't matter which device it's for.
Additionally the alias may be still NULL at the point when the error is
being reported misleading users that they have something wrong with a
specific device.
Resolves: https://issues.redhat.com/browse/RHEL-16878
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
When reverting to inactive snapshot updating the domain definition needs
to happen after the new overlays are created otherwise qemu-img will
correctly fail with error:
Trying to create an image with the same filename as the backing file
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
When we revert to non-leaf snapshot and create new branch or branches
the overlay in snapshot metadata is no longer usable as a disk source
for deletion of that snapshot. We need to use other places to figure out
the correct storage source.
Fixes: https://gitlab.com/libvirt/libvirt/-/issues/534
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Commit changing the code to allow passing NULL as @data into
qemuSaveImageDecompressionStart() was not correct as it left the
original call into the function as well.
Introduced-by: 2f3e582a1a
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2247754
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
QEMU_BLOCK_STORAGE_SOURCE_BACKEND_PROPS_SKIP_UNMAP is no longer
referenced inside the code.
QEMU_BLOCK_STORAGE_SOURCE_BACKEND_PROPS_AUTO_READONLY is passed from
various code paths to the qemuBlockStorageSourceGetBackendProps helper,
but it's no longer used.
Both thus can be removed.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code was refactored to format the 'read-only' and 'auto-read-only'
flags via the common helper, so the logic determining their values can
be removed.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the qemuBlockStorageSourceAddBlockdevCommonProps helper when
formatting protocol layer both when it's used as backing for a format
node and when it's used as the effective node.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The resulting properties are identical, as the hostdev backend code
doesn't set any of the extra properties.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce a mode where the protocol layer -blockdev will be formatted
so that it can be used as the effective node (used to access data from
the device). For this new mode we'll use
qemuBlockStorageSourceAddBlockdevCommonProps.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the new helper in qemuBlockStorageSourceGetBlockdevStorageSliceProps
to format the common bits.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The new helper replaces qemuBlockStorageSourceGetBlockdevFormatCommonProps
and the two inline instances generating the common properties for a
blockdev layer.
The new helper is to be used for both the format layer and the storage
backing layer, thus a new parameter 'effective' switches between the
modes.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the same ordering of the relevant fields as we do for the format
layer -blockdev so that later they can be refactored without test
fallout.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Change the return value type to 'virDomainDiskGetDetectZeroes'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
At this point only a single code path (for formatting -drive for legacy
SD cards) uses the 'legacy' output and that code path doesn't populate
the node name. Thus we can unify the code block and simplify the JSON
formatters.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Setup the VDPA bits of the appropriate part of the image chain for block
copy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code which opens the VDPA device and prepares it for FD passing was
not called in the hotplug code path, preventing hotplug of VDPA disks
with:
error: internal error: argument key 'path' must not have null value
Use the new helper qemuProcessPrepareHostStorageDisk to setup the VDPA
definition.
Closes: https://gitlab.com/libvirt/libvirt/-/issues/539
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Currently the code sets up only VDPA backends but will be used later in
hotplug code too.
This patch also uses normal forward iteration in the loop in
qemuProcessPrepareHostStorage as we don't need to remove disks from the
disk list at that point.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Return whether a relevant cachemode was presented rather than returning
an error, so that callers can be simplified. Use the proper enum type as
argument rather than typecasting in the switch statement.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Formatting of the 'nbdkit' driven backend breaks out of the switch
statement so we don't need to have an unnecessary block and indentation
level for the case when nbdkit is not in use.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'qemuBuildDriveSourceStr' used to build the legacy -drive commandline
for SD cards is the only user of qemuDiskSourceGetProps. Move the helper
directly inline.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'auto-read-only' blockdev option is available in all supported qemu
versions so we can remove the migration hack which disabled it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's somewhat confusing that some of the services have a
corresponding foo.service.extra.in and foo.socket.extra.in, some
have just one of the two, and some have neither.
In order to make things more approachable, make sure that both
files exists for each service.
In most cases the extra units are currently unused, so they will
just contain a comment briefly explaining their purpose and
pointing users to meson.build, where they can find more
information. The same comment is also added to the top of
extra units that already have some contents in them for
consistency.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that the underlying script is able to merge an arbitrary
number of units into the base template, expose this possibility
in the build system.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Currently, libvirt doesn't send events when devices are attached,
detached or updated. Thus, any services that listen to events are
unaware of the change to persistent config.
Signed-off-by: Fima Shevrin <efim.shevrin@virtuozzo.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
While the name itself doesn't matter, this rename is done to prove that
all places using 'nodeformat' were converted to the appropriate
accessors.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The persistent bitmaps are stored in the format layer, using 'effective'
bitmap name is the most reasonable approach in this case.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The blockjob, NBD export and setup of the cookie data all care about the
effective nodename.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The frontend device needs to access the blocks directly so it cares
about the effective nodename.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In most cases the bitmap operations are relevant only on qcow2 images
thus the 'format' layer will be present. Although in certain specific
cases temporary bitmaps can be created on top of other images as well,
thus we use the 'effective' bitmap name in all cases for bitmap
operations.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
I case of statistics we're interested in the statistics of the effective
bitmap whatever it happens to be.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The disk backend setup code is concerned only about the effective
nodename. Doing this conversion will also simplify further changes
needed to drop the 'raw' layer in cases when it's not really needed.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code setting the nodenames needs to use the 'true' nodename of the
format layer.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Convert the main -blockdev JSON object setup code to use the new
accessors. In these we use mainly the real 'format' layer node name.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the effective nodename for naming the job as we use that one now.
It doesn't matter too much which one we pick, because it's used just for
the name of the job, which we preserve in the status XML.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Both modified cases in this patch require the effective nodename as they
deal with the data being backed up.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
