Hi Manoj,
my intention was (unless discussed and outlined to be important to do it
otherwise):
18.04 - integrate the upstream changes so that --bypass-cache works
16.04 users using cloud-archive queens will have the same feature
16.04-17.10 and anyone not using bypass-cache will stay as-is I had not planned
to backport the code so far.
I haven't checked yet, but assuming the time delta the backport could cause
more
issues than it solves.
For the older releases I'd consider it a configuration issue.
If an admin chooses to use an uncommon path (like /var/tmp) then he has to
make
it allowed to be accessed in the apparmor profiles.
Get me right I use virsh save/restore on a regular base and it works in
the paths that are open by default, which are the places the images
usually are from like /var/lib/libvirt/images/.
If that does not work that might be a modified apparmor rule, but for
that I'd need to know way more about the case and see if it is actually
a bug or really just using an uncommon dir.
If you want to look into potential config issues, remove the silent denies to
/var and /var temp at the end of "/etc/apparmor.d/abstractions/libvirt-qemu".
Then run your case again, report back with
a) commands to trigger the issue
b) dmesg while that occurred
None of the latter is needed to get it fixed in 18.04 where I'll make
bypass-cache work as suggested by IBM by picking the code changes.
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https://bugs.launchpad.net/bugs/1719579
Title:
[Ubuntu 16.04.2] [libvirt] virsh restore fails from state file saved
in /var/tmp folder using virsh save
Status in The Ubuntu-power-systems project:
Triaged
Status in apparmor package in Ubuntu:
Invalid
Status in libvirt package in Ubuntu:
Triaged
Bug description:
== Comment: #1 - SEETEENA THOUFEEK <[email protected]> - 2017-01-17
00:09:16 ==
Bala, Please mail me the machine information.
== Comment: #3 - SEETEENA THOUFEEK <[email protected]> - 2017-01-17
02:14:06 ==
2017-01-16 12:09:37.707+0000: 7024: info :
virSecurityDACRestoreFileLabelInternal:388 : Restoring DAC user and group on
'/var/tmp/bala'
2017-01-16 12:09:37.707+0000: 7024: info :
virSecurityDACSetOwnershipInternal:290 : Setting DAC user and group on
'/var/tmp/bala' to '0:0'
2017-01-16 12:09:37.707+0000: 7024: warning : qemuDomainSaveImageStartVM:6750
: failed to restore save state label on /var/tmp/bala
2017-01-16 12:09:37.707+0000: 7024: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x3fff4ca62b00
2017-01-16 12:09:37.707+0000: 7024: debug : qemuDomainObjEndAsyncJob:1848 :
Stopping async job: start (vm=0x3fff4ca535c0 name=virt-tests-vm1-bala)
2017-01-16 12:09:37.707+0000: 7024: info : virObjectRef:296 : OBJECT_REF:
obj=0x3fff4ca62b00
2017-01-16 12:09:37.707+0000: 7024: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x3fff4ca62b00
2017-01-16 12:09:37.707+0000: 7024: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x3fff4ca535c0
2017-01-16 12:09:37.707+0000: 7024: debug : virThreadJobClear:121 : Thread
7024 (virNetServerHandleJob) finished job remoteDispatchDomainRestore with
ret=-1
2017-01-16 12:09:37.707+0000: 7024: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x3fff7c002c10
2017-01-16 12:09:37.707+0000: 7024: debug : virNetServerProgramSendError:153
: prog=536903814 ver=1 proc=54 type=1 serial=4 msg=0x100133d2590
rerr=0x3fffa59be3c0
2017-01-16 12:09:37.707+0000: 7024: debug : virNetMessageEncodePayload:376 :
Encode length as 172
2017-01-16 12:09:37.707+0000: 7024: debug :
virNetServerClientSendMessageLocked:1399 : msg=0x100133d2590 proc=54 len=172
offset=0
2017-01-16 12:09:37.707+0000: 7024: info :
virNetServerClientSendMessageLocked:1407 : RPC_SERVER_CLIENT_MSG_TX_QUEUE:
client=0x100133d23c0 len=172 prog=536903814 vers=1 proc=54 type=1 status=1
serial=4
2017-01-16 12:09:37.707+0000: 7024: debug :
virNetServerClientCalculateHandleMode:157 : tls=(nil) hs=-1, rx=0x100133d0670
tx=0x100133d2590
2017-01-16 12:09:37.707+0000: 7024: debug :
virNetServerClientCalculateHandleMode:192 : mode=3
2017-01-16 12:09:37.707+0000: 7024: info : virEventPollUpdateHandle:152 :
EVENT_POLL_UPDATE_HANDLE: watch=417 events=3
2017-01-16 12:09:37.707+0000: 7024: debug : virEventPollInterruptLocked:727 :
Interrupting
2017-01-16 12:09:37.707+0000: 7024: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x3fff7c002c10
2017-01-16 12:09:37.707+0000: 7024: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x100133caea0
2017-01-16 12:09:37.707+0000: 7024: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x100133d23c0
.
2017-01-16 12:14:28.445+0000: 7019: info : qemuMonitorJSONIOProcessLine:201 :
QEMU_MONITOR_RECV_EVENT: mon=0x3fff94004d90 event={"timestamp": {"seconds":
1484568868, "microseconds": 444620}, "event": "MIGRATION", "data": {"status":
"failed"}}
2017-01-16 12:14:28.445+0000: 7019: debug : qemuMonitorJSONIOProcessEvent:147
: mon=0x3fff94004d90 obj=0x100133b5670
2017-01-16 12:14:28.445+0000: 7019: debug : virJSONValueToString:1762 :
object=0x100133a8000
2017-01-16 12:14:28.445+0000: 7019: debug : virJSONValueToStringOne:1691 :
object=0x100133a8000 type=0 gen=0x100133d1160
2017-01-16 12:14:28.445+0000: 7019: debug : virJSONValueToStringOne:1691 :
object=0x100133d2a80 type=2 gen=0x100133d1160
2017-01-16 12:14:28.445+0000: 7019: debug : virJSONValueToString:1795 :
result={"status":"failed"}
2017-01-16 12:14:28.445+0000: 7019: debug : qemuMonitorEmitEvent:1218 :
mon=0x3fff94004d90 event=MIGRATION
2017-01-16 12:14:28.445+0000: 7019: info : virObjectRef:296 : OBJECT_REF:
obj=0x3fff94004d90
2017-01-16 12:14:28.445+0000: 7019: debug : qemuProcessHandleEvent:629 :
vm=0x3fff4ca535c0
2017-01-16 12:14:28.445+0000: 7019: info : virObjectNew:202 : OBJECT_NEW:
obj=0x100133d2870 classname=virDomainQemuMonitorEvent
2017-01-16 12:14:28.445+0000: 7019: debug : virObjectEventNew:645 :
obj=0x100133d2870
2017-01-16 12:14:28.445+0000: 7019: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x100133d2870
2017-01-16 12:14:28.445+0000: 7019: info : virObjectUnref:261 :
OBJECT_DISPOSE: obj=0x100133d2870
2017-01-16 12:14:28.445+0000: 7019: debug :
virDomainQemuMonitorEventDispose:477 : obj=0x100133d2870
2017-01-16 12:14:28.445+0000: 7019: debug : virObjectEventDispose:121 :
obj=0x100133d2870
2017-01-16 12:14:28.445+0000: 7019: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x3fff94004d90
2017-01-16 12:14:28.445+0000: 7019: debug : qemuMonitorJSONIOProcessEvent:172
: handle MIGRATION handler=0x3fff9d7247e0 data=0x100133a8000
2017-01-16 12:14:28.445+0000: 7019: debug :
qemuMonitorEmitMigrationStatus:1488 : mon=0x3fff94004d90, status=failed
2017-01-16 12:14:28.445+0000: 7019: info : virObjectRef:296 : OBJECT_REF:
obj=0x3fff94004d90
2017-01-16 12:14:28.445+0000: 7019: debug :
qemuProcessHandleMigrationStatus:1502 : Migration of domain 0x3fff4ca535c0
virt-tests-vm1-bala changed state to failed
2017-01-16 12:14:28.445+0000: 7019: info : virObjectUnref:259 : OBJECT_UNREF:
obj=0x3fff94004d90
2017-01-16 12:14:28.445+0000: 7019: debug : qemuMonitorJSONIOProcess:255 :
Total used 232 bytes out of 232 available in buffer
2017-01-16 12:14:28.445+0000: 7019: info : virEventPollUpdateHandle:152 :
EVENT_POLL_UPDATE_HANDLE: watch=430 events=13
2017-01-16 12:14:28.445+0000: 7023: error : qemuMigrationCheckJobStatus:2641
: operation failed: job: unexpectedly failed
this is an apparmor issue and there is no libvirt bug here.
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