virtiofsd error on Debian 12 #1702
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More context: As I see, incus expect that you are running QEMU version 8+, because it uses the I installed QEMU from stable repository (not the backported version), so I was using QEMU version 7.2.15 and this version still has As I didn't see anything about this version requirement in the documentation, I think it needs to be updated. |
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We'll add a mention that while we do work with the older QEMU, we do indeed require the external virtiofsd to be installed as the old built-in one doesn't support what we need. |
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Closes lxc#1702 Signed-off-by: Stéphane Graber <[email protected]>
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Closes #1702 Signed-off-by: Stéphane Graber <[email protected]>
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Hi,
I am trying to create a storage volume of type
filesystemto share between two VMs, but, when I add this volume to the VM it breaks the startup and I need to kill the QEMU process to stop incus of trying to start the VM. Every time I try to stop the VM, I get the following message:I am using the incus 6.0 LTS installed from the backported repository of the Debian 12 (Bookworm).
PS: I was following this video to execute the commands.
I tried to debug, and I found that for this type of volume (filesystem), incus has two options:
vitiofsand9p. Every time it found the binary ofvirtiofsd, it uses it. The log in the file/var/log/incus/test_v1/disk.foo.logshow that the parameter--cacheis wrong for the version ofvirtiofsdI have installed. After I verified the available parameters accepted, I found that the file must use-o cache.The workaround I found is to set the
io.busto9pto every customfilesystemvolume device in the instance. With this the VM start working again.`$ /usr/lib/qemu/virtiofsd --help`
$ /usr/lib/qemu/virtiofsd --help usage: /usr/lib/qemu/virtiofsd [options] -h --help print help -V --version print version --print-capabilities print vhost-user.json -d -o debug enable debug output (implies -f) --syslog log to syslog (default stderr) -f foreground operation --daemonize run in background -o cache=<mode> cache mode. could be one of "auto, always, none" default: auto -o flock|no_flock enable/disable flock default: no_flock -o log_level=<level> log level, default to "info" level could be one of "debug, info, warn, err" -o max_idle_threads the maximum number of idle worker threads allowed (default: 10) -o posix_lock|no_posix_lock enable/disable remote posix lock default: no_posix_lock -o readdirplus|no_readdirplus enable/disable readirplus default: readdirplus except with cache=none -o sandbox=namespace|chroot sandboxing mode: - namespace: mount, pid, and net namespaces with pivot_root(2) into shared directory - chroot: chroot(2) into shared directory (use in containers) default: namespace -o timeout=<number> I/O timeout (seconds) default: depends on cache= option. -o writeback|no_writeback enable/disable writeback cache default: no_writeback -o xattr|no_xattr enable/disable xattr default: no_xattr -o xattrmap=<mapping> Enable xattr mapping (enables xattr) <mapping> is a string consists of a series of rules e.g. -o xattrmap=:map::user.virtiofs.: -o modcaps=CAPLIST Modify the list of capabilities e.g. -o modcaps=+sys_admin:-chown --rlimit-nofile=<num> set maximum number of file descriptors (0 leaves rlimit unchanged) default: min(1000000, fs.file-max - 16384) if the current rlimit is lower -o allow_direct_io|no_allow_direct_io retain/discard O_DIRECT flags passed down to virtiofsd from guest applications. default: no_allow_direct_io -o announce_submounts Announce sub-mount points to the guest -o posix_acl/no_posix_acl Enable/Disable posix_acl. (default: disabled) -o security_label/no_security_label Enable/Disable security label. (default: disabled) -o killpriv_v2/no_killpriv_v2 Enable/Disable FUSE_HANDLE_KILLPRIV_V2. (default: enabled as long as client supports it) -o source=PATH shared directory tree -o allow_root allow access by root --socket-path=PATH path for the vhost-user socket --socket-group=GRNAME name of group for the vhost-user socket --fd=FDNUM fd number of vhost-user socket --thread-pool-size=NUM thread pool size limit (default 0)`$ cat /var/log/incus/test_v1/disk.foo.log`
`$ /usr/lib/qemu/virtiofsd --version`
`$ qemu-system-x86_64 --version`
`$ incus version`
`$ incus storage info standard`
$ incus storage info standard info: description: "" driver: btrfs name: standard space used: 72.33GiB total space: 3.64TiB`$ incus info`
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