Commit Graph

8 Commits

Author SHA1 Message Date
Michal Privoznik
8abc979bb0 qemu: Move channelTargetDir into stateDir
For historical reasons (i.e. unknown reason) we put channel
sockets into a path derived from cfg->libDir which is a path that
survives host reboots (e.g. /var/lib/libvirt/...). This is not
necessary and in fact for session daemon creates a longer prefix:

  XDG_CONFIG_HOME -> /home/user/.config
  XDG_RUNTIME_DIR -> /run/user/1000

Worse, if host is rebooted suddenly (e.g. due to power loss) then
we leave files behind and nobody will ever remove them.

Therefore, place the channel target dir into state dir.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2173980
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2023-08-17 17:22:09 +02:00
Michal Privoznik
d3759d3674 qemu: Generate shorter channel target paths
A <channel/> device is basically an UNIX socket into guest.
Whatever is sent from the host, appears in the guest and vice
versa. But because of that, the length of the path to the socket
is important (underscored by fact that we derive the path from
domain short name). But there are still cases where we might not
fit into UNIX_PATH_MAX limit (usually 108 characters), because
the path is derived also from other variables, e.g.
XDG_CONFIG_HOME for session domains.

There are two components though, that are needless: "/target/"
and "domain-" prefix. Drop them. This is safe to do, because
running domains have their path saved in status XML and even
though paths are dropped on migration, they are not part of guest
ABI and thus we are free to change them.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2023-08-17 17:19:01 +02:00
Peter Krempa
706cd47487 qemuhotplugtest: Use real 'latest' capabilities for hotplug testing
Rather than test with synthetic capabilities which might get outdated
reuse testQemuGetRealCaps to fetch latest capabilities and use those.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2023-04-03 09:19:07 +02:00
Andrea Bolognani
0b464cd84f tests: Drop more QEMU driver config overrides
These are allegedly necessary to keep the output consistent,
but now that we're using a privileged config for the driver we
get the desired behavior out of the box, and as a bonus the
paths match what you would actually see on a regular host.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2023-03-06 14:44:13 +01:00
Daniel P. Berrangé
e88367095f qemu: populate <audio> element with default config
Currently the QEMU driver secretly sets the QEMU_AUDIO_DRV env variable

 - VNC - set to "none", unless passthrough of host env variable is set
 - SPICE - always set to "spice"
 - SDL - always passthrough host env
 - No graphics - set to "none", unless passthrough of host env variable is set

The setting of the QEMU_AUDIO_DRV env variable is done in the code which
configures graphics.

If no <audio> element is present, we now auto-populate <audio> elements
to reflect this historical default config. This avoids need to set audio
env when processing graphics.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-03-09 22:58:30 +00:00
Jiri Denemark
1554eafbe6 qemu: Don't assign alias to disabled balloon device
<memballoon model='none'/> is the only way to disable balloon driver
since libvirt will add one automatically if the memballoon element is
missing. In other words, there's no balloon device if model is 'none'
and generating an alias for it makes no sense. The alias will be ignored
when parsing the XML and it will disappear once libvirtd is restarted.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2018-03-19 21:22:43 +01:00
Pavel Hrdina
e6e26a899d tests: unify qemu binary paths for all qemu related tests
Our test data used a lot of different qemu binary paths and some
of them were based on downstream systems.

Note that there is one file where I had to add "accel=kvm" because
the qemuargv2xml code parses "/usr/bin/kvm" as virt type="kvm".

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2017-04-11 14:06:47 +02:00
Tomasz Flendrich
b0b4a35c53 qemuhotplugtest: Move domain and device XMLs to different directories
This way we can safely differentiate what XMLs contain whole domain
definitions and which contain just devices.  Thanks to that we can
test the domain XMLs in virschematest again.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-07-11 17:09:29 +02:00