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Story
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Resolution: Unresolved
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Normal
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rhel-9.5
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None
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rhel-sst-virtualization-storage
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ssg_virtualization
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5
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False
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None
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None
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None
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None
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None
Please provide the package NVR for which bug is seen:
libvirt-10.5.0-4.el9.x86_64
qemu-kvm-9.0.0-7.el9.x86_64
virtiofsd-1.11.1-1.el9.x86_64
How reproducible:
100%
Steps to reproduce:
1. Check the virtiofsd capabilities
# /usr/libexec/virtiofsd --print-capabilities
{
"type": "fs",
"features": [
"migrate-precopy",
"separate-options"
]
}
2. Prepare a guest with following xml snippet
# virsh dumpxml lizhu --xpath //memoryBacking <memoryBacking> <source type="memfd"/> <access mode="shared"/> </memoryBacking> # virsh dumpxml lizhu --xpath //filesystem <filesystem type="mount" accessmode="passthrough"> <driver type="virtiofs" queue="512"/> <binary path="/usr/libexec/virtiofsd" xattr="on"/> <source dir="/var/tmp/mount_tag0"/> <target dir="mount_tag0"/> <alias name="ua-1667b440-49cb-11ef-839a-e4434bdc8b94"/> <address type="pci" domain="0x0000" bus="0x07" slot="0x00" function="0x0"/> </filesystem>
3. start the guest
# virsh start lizhu Domain 'lizhu' started
4. Login the guest, mount virtiofs
[Guest OS]# mount -t virtiofs mount_tag0 /mnt
5. Save the guest
# virsh managedsave lizhu Domain 'lizhu' state saved by libvirt
6. Check the state file
# ll /var/lib/libvirt/qemu/save/lizhu.save -rw-------. 1 root root 757513180 Jul 25 04:20 /var/lib/libvirt/qemu/save/lizhu.save
7. Try to restore
# virsh start lizhu error: Failed to start domain 'lizhu' error: internal error: QEMU unexpectedly closed the monitor (vm='lizhu'): 2024-07-25T08:21:45.361362Z qemu-kvm: Error loading back-end state of virtio-user-fs device /machine/peripheral/ua-1667b440-49cb-11ef-839a-e4434bdc8b94/virtio-backend (tag: "mount_tag0"): Back-end failed to process its internal state 2024-07-25T08:21:45.361431Z qemu-kvm: Failed to load vhost-user-fs-backend:back-end 2024-07-25T08:21:45.361439Z qemu-kvm: error while loading state for instance 0x0 of device '0000:00:02.6:00.0/vhost-user-fs' 2024-07-25T08:21:45.363119Z qemu-kvm: load of migration failed: Input/output error
Expected result:
Guest with virtiofs device can be restored. Or if guest with virtiofs device can not be saved for now, it should report error when users try to save guest.
