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authorChristian Krinitsin <mail@krinitsin.com>2025-06-01 21:35:14 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-06-01 21:35:14 +0200
commit3e4c5a6261770bced301b5e74233e7866166ea5b (patch)
tree9379fddaba693ef8a045da06efee8529baa5f6f4 /gitlab/issues_text/target_missing/host_missing/accel_missing/686
parente5634e2806195bee44407853c4bf8776f7abfa4f (diff)
downloadqemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.tar.gz
qemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.zip
clean up repository
Diffstat (limited to 'gitlab/issues_text/target_missing/host_missing/accel_missing/686')
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-Qemu crashes if it is paused and migrated twice
-Description of problem:
-If the vm is in PAUSED state (in Openstack parlance) (I think libvirt calls that paused as well but uses the command `virsh suspend`), and live-migrated twice, the second time the Qemu process terminates.
-
-This is perfectly repeatable.
-
-If the VM is unpaused and re-paused after the first migration, then the problem does not occur on the next migration.
-Steps to reproduce:
-See also the referenced bug report to openstack, above.
-1. `$ openstack stack create ....`
-2. `$ openstack server pause <UUID>`
-(wait until done)
-3. `$ openstack server migrate --live-migration <UUID>`
-(wait until done)
-4. `$ openstack server migrate --live-migration <UUID>`
-
-The VM is now in ERROR state because it has disappeared: `libvirt.libvirtError: Domain not found: no domain with matching uuid '<UUID>'`
-Additional information:
-The last few lines from the instance-00000ba2.log seem pertinent (this is from the receiving Qemu instance):
-```
-2021-10-22 15:32:53.829+0000: initiating migration
-qemu-system-x86_64: /build/qemu-lb4V37/qemu-4.2/block.c:5523: bdrv_inactivate_recurse: Assertion `!(bs->open_flags & BDRV_O_INACTIVE)' failed.
-2021-10-22 15:32:59.122+0000: shutting down, reason=crashed
-```
-This is logged by libvirt (also on the receiving side):
-```
-Oct 22 15:29:04 ybk140931 ovs-vsctl[20174]: ovs|00001|vsctl|INFO|Called as ovs-vsctl --timeout=5 -- --if-exists del-port tap3a71aa63-6a
-Oct 22 15:31:31 ybk140931 ovs-vsctl[21412]: ovs|00001|vsctl|INFO|Called as ovs-vsctl --timeout=5 -- --if-exists del-port tap3a71aa63-6a -- add-port br-int tap3a71aa63-6a -- set Interface tap3a71aa63-6a "external-ids:attached-mac=\"fa:16:3e:da:03:56\"" -- set Interface tap3a71aa63-6a "external-ids:iface-id=\"3a71aa63-6a39-41d8-9602-04b84834db9e\"" -- set Interface tap3a71aa63-6a "external-ids:vm-id=\"de2b27d2-345c-45fc-8f37-2fa0ed1a1151\"" -- set Interface tap3a71aa63-6a external-ids:iface-status=active
-Oct 22 15:32:58 ybk140931 libvirtd[3237]: Unable to read from monitor: Connection reset by peer
-Oct 22 15:32:59 ybk140931 ovs-vsctl[22001]: ovs|00001|vsctl|INFO|Called as ovs-vsctl --timeout=5 -- --if-exists del-port tap3a71aa63-6a
-Oct 22 15:32:59 ybk140931 libvirtd[3237]: operation failed: domain is not running
-Oct 22 15:32:59 ybk140931 libvirtd[3237]: internal error: qemu unexpectedly closed the monitor: 2021-10-22T15:32:58.845667Z qemu-system-x86_64: Failed to load virtio_pci/modern_queue_state:used
-                                          2021-10-22T15:32:58.845687Z qemu-system-x86_64: Failed to load virtio_pci/modern_state:vqs
-                                          2021-10-22T15:32:58.845690Z qemu-system-x86_64: Failed to load virtio/extra_state:extra_state
-                                          2021-10-22T15:32:58.845692Z qemu-system-x86_64: Failed to load virtio-rng:virtio
-                                          2021-10-22T15:32:58.845695Z qemu-system-x86_64: error while loading state for instance 0x0 of device '0000:00:06.0/virtio-rng'
-                                          2021-10-22T15:32:58.847860Z qemu-system-x86_64: load of migration failed: Input/output error
-Oct 22 15:32:59 ybk140931 libvirtd[3237]: operation failed: domain 'instance-00000ba2' is not running
-```