[ovirt-users] Re: strange issue: vm lost info on disk

On Mon, May 14, 2018 at 5:19 PM Juan Pablo <pablo.localhost(a)gmail.com&gt; wrote: > ok, so Im confirming that the image is wrong somehow: > with no snapshot, from inside the vm disk size is reporting 750G. > with a snapshot, from inside the vm disk size is reporting 1100G. > both have no partitions on it, so I guess ovirt migrated the structure of > the 750G disk on a 1100 disk, any ideas to troubleshoot this and see if > there's data to recover? > Maybe you resized the disk after making a snapshot? If the base is raw, the size seen by the guest is the size of the image. The snapshot is qcow2, the size seen by the guest is the size saved in the qcow2 header. Can you share the output of: qemu-img info --backing-chain /path/to/snapshot And: qemu-img info --backing-chain /path/to/base You can see the path in the vm xml, either in vdsm.log, or using virsh: virsh -r list virtsh -r dumpxml vm-id Nir > > regards, > > > 2018-05-13 15:25 GMT-03:00 Juan Pablo <pablo.localhost(a)gmail.com&gt;: > >> 2 clues: >> -the original size of the disk was 750G and was extended a month ago to >> 1100G. The System rebooted fine several times, and took the new size with >> no problems. >> >> -I run fdisk from a centos 7 rescue cd and '/dev/vda' reported 750G. >> then, I took a snapshot of the disk to play with recovery tools and now >> fdisk reports 1100G... ¬¬ >> >> so my guess is on the extend and later migration to a different storage >> domain caused the issue. >> Im currently running testdisk to see if theres any partition to recover. >> >> regards, >> >> 2018-05-13 12:31 GMT-03:00 Juan Pablo <pablo.localhost(a)gmail.com&gt;: >> >>> I removed the auto-snapshot and still no lucky. no bootable disk found. >>> =( >>> ideas? >>> >>> >>> 2018-05-13 12:26 GMT-03:00 Juan Pablo <pablo.localhost(a)gmail.com&gt;: >>> >>>> benny, thanks for your reply: >>>> ok, so the steps are : removing the snapshot on the first place. then >>>> what do you suggest? >>>> >>>> >>>> 2018-05-12 15:23 GMT-03:00 Nir Soffer <nsoffer(a)redhat.com&gt;: >>>> >>>>> On Sat, 12 May 2018, 11:32 Benny Zlotnik, <bzlotnik(a)redhat.com&gt; >>>>> wrote: >>>>> >>>>>> Using the auto-generated snapshot is generally a bad idea as it's >>>>>> inconsistent, >>>>>> >>>>> >>>>> What do you mean by inconsistant? >>>>> >>>>> >>>>> you should remove it before moving further >>>>>> >>>>>> On Fri, May 11, 2018 at 7:25 PM, Juan Pablo < >>>>>> pablo.localhost(a)gmail.com&gt; wrote: >>>>>> >>>>>>> I rebooted it with no luck, them I used the auto-gen snapshot , >>>>>>> same luck. >>>>>>> attaching the logs in gdrive >>>>>>> >>>>>>> thanks in advance >>>>>>> >>>>>>> 2018-05-11 12:50 GMT-03:00 Benny Zlotnik <bzlotnik(a)redhat.com&gt;: >>>>>>> >>>>>>>> I see here a failed attempt: >>>>>>>> 2018-05-09 16:00:20,129-03 ERROR [org.ovirt.engine.core.dal. >>>>>>>> dbbroker.auditloghandling.AuditLogDirector] >>>>>>>> (EE-ManagedThreadFactory-engineScheduled-Thread-67) >>>>>>>> [bd8eeb1d-f49a-4f91-a521-e0f31b4a7cbd] EVENT_ID: >>>>>>>> USER_MOVED_DISK_FINISHED_FAILURE(2,011), User admin@internal-authz >>>>>>>> have failed to move disk mail02-int_Disk1 to domain 2penLA. >>>>>>>> >>>>>>>> Then another: >>>>>>>> 2018-05-09 16:15:06,998-03 ERROR [org.ovirt.engine.core.dal. >>>>>>>> dbbroker.auditloghandling.AuditLogDirector] >>>>>>>> (EE-ManagedThreadFactory-engineScheduled-Thread-34) [] EVENT_ID: >>>>>>>> USER_MOVED_DISK_FINISHED_FAILURE(2,011), User admin@internal-authz >>>>>>>> have failed to move disk mail02-int_Disk1 to domain 2penLA. >>>>>>>> >>>>>>>> Here I see a successful attempt: >>>>>>>> 2018-05-09 21:58:42,628-03 INFO [org.ovirt.engine.core.dal. >>>>>>>> dbbroker.auditloghandling.AuditLogDirector] (default task-50) >>>>>>>> [940b051c-8c63-4711-baf9-f3520bb2b825] EVENT_ID: >>>>>>>> USER_MOVED_DISK(2,008), User admin@internal-authz moving disk >>>>>>>> mail02-int_Disk1 to domain 2penLA. >>>>>>>> >>>>>>>> >>>>>>>> Then, in the last attempt I see the attempt was successful but >>>>>>>> live merge failed: >>>>>>>> 2018-05-11 03:37:59,509-03 ERROR [org.ovirt.engine.core.bll.MergeStatusCommand] >>>>>>>> (EE-ManagedThreadFactory-commandCoordinator-Thread-2) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Failed to live merge, >>>>>>>> still in volume chain: [5d9d2958-96bc-49fa-9100-2f33a3ba737f, >>>>>>>> 52532d05-970e-4643-9774-96c31796062c] >>>>>>>> 2018-05-11 03:38:01,495-03 INFO [org.ovirt.engine.core.bll. >>>>>>>> SerialChildCommandsExecutionCallback] (EE-ManagedThreadFactory-engineScheduled-Thread-51) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Command 'LiveMigrateDisk' >>>>>>>> (id: '115fc375-6018-4d59-b9f2-51ee05ca49f8') waiting on child >>>>>>>> command id: '26bc52a4-4509-4577-b342-44a679bc628f' >>>>>>>> type:'RemoveSnapshot' to complete >>>>>>>> 2018-05-11 03:38:01,501-03 ERROR [org.ovirt.engine.core.bll. >>>>>>>> snapshots.RemoveSnapshotSingleDiskLiveCommand] >>>>>>>> (EE-ManagedThreadFactory-engineScheduled-Thread-51) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Command id: >>>>>>>> '4936d196-a891-4484-9cf5-fceaafbf3364 failed child command status >>>>>>>> for step 'MERGE_STATUS' >>>>>>>> 2018-05-11 03:38:01,501-03 INFO [org.ovirt.engine.core.bll. >>>>>>>> snapshots.RemoveSnapshotSingleDiskLiveCommandCallback] >>>>>>>> (EE-ManagedThreadFactory-engineScheduled-Thread-51) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Command >>>>>>>> 'RemoveSnapshotSingleDiskLive' id: '4936d196-a891-4484-9cf5-fceaafbf3364' >>>>>>>> child commands '[8da5f261-7edd-4930-8d9d-d34f232d84b3, >>>>>>>> 1c320f4b-7296-43c4-a3e6-8a868e23fc35, a0e9e70c-cd65-4dfb-bd00-076c4e99556a]' >>>>>>>> executions were completed, status 'FAILED' >>>>>>>> 2018-05-11 03:38:02,513-03 ERROR [org.ovirt.engine.core.bll. >>>>>>>> snapshots.RemoveSnapshotSingleDiskLiveCommand] >>>>>>>> (EE-ManagedThreadFactory-engineScheduled-Thread-2) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Merging of snapshot >>>>>>>> '319e8bbb-9efe-4de4-a9a6-862e3deb891f' images >>>>>>>> '52532d05-970e-4643-9774-96c31796062c'..'5d9d2958-96bc-49fa-9100-2f33a3ba737f' >>>>>>>> failed. Images have been marked illegal and can no longer be previewed or >>>>>>>> reverted to. Please retry Live Merge on the snapshot to complete the >>>>>>>> operation. >>>>>>>> 2018-05-11 03:38:02,519-03 ERROR [org.ovirt.engine.core.bll. >>>>>>>> snapshots.RemoveSnapshotSingleDiskLiveCommand] >>>>>>>> (EE-ManagedThreadFactory-engineScheduled-Thread-2) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Ending command >>>>>>>> 'org.ovirt.engine.core.bll.snapshots. >>>>>>>> RemoveSnapshotSingleDiskLiveCommand' with failure. >>>>>>>> 2018-05-11 03:38:03,530-03 INFO [org.ovirt.engine.core.bll. >>>>>>>> ConcurrentChildCommandsExecutionCallback] >>>>>>>> (EE-ManagedThreadFactory-engineScheduled-Thread-37) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Command 'RemoveSnapshot' >>>>>>>> id: '26bc52a4-4509-4577-b342-44a679bc628f' child commands >>>>>>>> '[4936d196-a891-4484-9cf5-fceaafbf3364]' executions were >>>>>>>> completed, status 'FAILED' >>>>>>>> 2018-05-11 03:38:04,548-03 ERROR [org.ovirt.engine.core.bll. >>>>>>>> snapshots.RemoveSnapshotCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-66) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Ending command >>>>>>>> 'org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand' with >>>>>>>> failure. >>>>>>>> 2018-05-11 03:38:04,557-03 INFO [org.ovirt.engine.core.bll. >>>>>>>> snapshots.RemoveSnapshotCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-66) >>>>>>>> [d5b7fdf5-9c37-4c1f-8543-a7bc75c993a5] Lock freed to object >>>>>>>> 'EngineLock:{exclusiveLocks='[4808bb70-c9cc-4286-aa39- >>>>>>>> 16b5798213ac=LIVE_STORAGE_MIGRATION]', sharedLocks=''}' >>>>>>>> >>>>>>>> I do not see the merge attempt in the vdsm.log, so please send >>>>>>>> vdsm logs for node02.phy.eze.ampgn.com.ar from that time. >>>>>>>> >>>>>>>> Also, did you use the auto-generated snapshot to start the vm? >>>>>>>> >>>>>>>> >>>>>>>> On Fri, May 11, 2018 at 6:11 PM, Juan Pablo < >>>>>>>> pablo.localhost(a)gmail.com&gt; wrote: >>>>>>>> >>>>>>>>> after the xfs_repair, it says: sorry I could not find valid >>>>>>>>> secondary superblock >>>>>>>>> >>>>>>>>> 2018-05-11 12:09 GMT-03:00 Juan Pablo <pablo.localhost(a)gmail.com&gt; >>>>>>>>> : >>>>>>>>> >>>>>>>>>> hi, >>>>>>>>>> Alias: >>>>>>>>>> mail02-int_Disk1 >>>>>>>>>> Description: >>>>>>>>>> ID: >>>>>>>>>> 65ec515e-0aae-4fe6-a561-387929c7fb4d >>>>>>>>>> Alignment: >>>>>>>>>> Unknown >>>>>>>>>> Disk Profile: >>>>>>>>>> Wipe After Delete: >>>>>>>>>> No >>>>>>>>>> >>>>>>>>>> that one >>>>>>>>>> >>>>>>>>>> 2018-05-11 11:12 GMT-03:00 Benny Zlotnik <bzlotnik(a)redhat.com&gt;: >>>>>>>>>> >>>>>>>>>>> I looked at the logs and I see some disks have moved >>>>>>>>>>> successfully and some failed. Which disk is causing the problems? >>>>>>>>>>> >>>>>>>>>>> On Fri, May 11, 2018 at 5:02 PM, Juan Pablo < >>>>>>>>>>> pablo.localhost(a)gmail.com&gt; wrote: >>>>>>>>>>> >>>>>>>>>>>> Hi, just sent you via drive the files. attaching some extra >>>>>>>>>>>> info, thanks thanks and thanks : >>>>>>>>>>>> >>>>>>>>>>>> from inside the migrated vm I had the following attached dmesg >>>>>>>>>>>> output before rebooting >>>>>>>>>>>> >>>>>>>>>>>> regards and thanks again for the help, >>>>>>>>>>>> >>>>>>>>>>>> 2018-05-11 10:45 GMT-03:00 Benny Zlotnik <bzlotnik(a)redhat.com&gt; >>>>>>>>>>>> : >>>>>>>>>>>> >>>>>>>>>>>>> Dropbox or google drive I guess. Also, can you attach >>>>>>>>>>>>> engine.log? >>>>>>>>>>>>> >>>>>>>>>>>>> On Fri, May 11, 2018 at 4:43 PM, Juan Pablo < >>>>>>>>>>>>> pablo.localhost(a)gmail.com&gt; wrote: >>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> vdsm is too big for gmail ...any other way I can share it >>>>>>>>>>>>>> with you? >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> ---------- Forwrded message ---------- >>>>>>>>>>>>>> From: Juan Pablo <pablo.localhost(a)gmail.com&gt; >>>>>>>>>>>>>> Date: 2018-05-11 10:40 GMT-03:00 >>>>>>>>>>>>>> Subject: Re: [ovirt-users] strange issue: vm lost info on >>>>>>>>>>>>>> disk >>>>>>>>>>>>>> To: Benny Zlotnik <bzlotnik(a)redhat.com&gt; >>>>>>>>>>>>>> Cc: users <Users(a)ovirt.org&gt; >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> ​​ >>>>>>>>>>>>>> Benny, thanks for your reply! it was a Live migration. >>>>>>>>>>>>>> sorry, it was from nfs to iscsi, not otherwise. I have reboot the vm for >>>>>>>>>>>>>> rescue and it does not detect any partitions with fdisk, Im running a >>>>>>>>>>>>>> xfs_repair with -n and found some corrupted primary superblock., its still >>>>>>>>>>>>>> running... ( so... there's info in the disk maybe?) >>>>>>>>>>>>>> >>>>>>>>>>>>>> attaching logs, let me know if those are the ones. >>>>>>>>>>>>>> thanks again! >>>>>>>>>>>>>> >>>>>>>>>>>>>> 2018-05-11 9:45 GMT-03:00 Benny Zlotnik <bzlotnik(a)redhat.com >>>>>>>>>>>>>> >: >>>>>>>>>>>>>> >>>>>>>>>>>>>>> Can you provide the logs? engine and vdsm. >>>>>>>>>>>>>>> Did you perform a live migration (the VM is running) or >>>>>>>>>>>>>>> cold? >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> On Fri, May 11, 2018 at 2:49 PM, Juan Pablo < >>>>>>>>>>>>>>> pablo.localhost(a)gmail.com&gt; wrote: >>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> Hi! , Im strugled about an ongoing problem: >>>>>>>>>>>>>>>> after migrating a vm's disk from an iscsi domain to a nfs >>>>>>>>>>>>>>>> and ovirt reporting the migration was successful, I see there's no data >>>>>>>>>>>>>>>> 'inside' the vm's disk. we never had this issues with ovirt so Im stranged >>>>>>>>>>>>>>>> about the root cause and if theres a chance of recovering the information. >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> can you please help me out troubleshooting this one? I >>>>>>>>>>>>>>>> would really appreciate it =) >>>>>>>>>>>>>>>> running ovirt 4.2.1 here! >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> thanks in advance, >>>>>>>>>>>>>>>> JP >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> _______________________________________________ >>>>>>>>>>>>>>>> Users mailing list -- users(a)ovirt.org >>>>>>>>>>>>>>>> To unsubscribe send an email to users-leave(a)ovirt.org >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> _______________________________________________ >>>>>> Users mailing list -- users(a)ovirt.org >>>>>> To unsubscribe send an email to users-leave(a)ovirt.org >>>>>> >>>>> >>>> >>> >> >