[Users] Problems when trying to delete a snapshot

Thu Jan 24 13:05:20 UTC 2013

----- Original Message -----
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> 
> Hi,
> I recovered from this error by import my base-image in a new machine
> and make a restore of the backups.
> 
> But is it possible "by hand" to merge latest snapshot in to a
> base-image to get a new VM up and running with the old disk image?
> 
Looking at your vdsm logs the snapshot should be intact, then it can be
manually restored to the previous state. Please restore the images dirs,
removing the "old" and the "orig" dirs you have. 
You need to change the engine db accordingly too. 

Later you can retry the merge.

Regards.

> I have tried with qemu-img but have no go with it.
> 
> Regards //Ricky
> 
> 
> On 2012-12-30 16:57, Haim Ateya wrote:
> > Hi Ricky,
> > 
> > from going over your logs, it seems like create snapshot failed,
> > its logged clearly in both engine and vdsm logs [1]. did you try to
> > delete this snapshot or was it a different one? if so, not sure its
> > worth debugging.
> > 
> > bee7-78e7d1cbc201, vmId=d41b4ebe-3631-4bc1-805c-d762c636ca5a), log
> > id: 46d21393 2012-12-13 10:40:24,372 ERROR
> > [org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase]
> > (pool-5-thread-50) [12561529] Failed in SnapshotVDS method
> > 2012-12-13 10:40:24,372 ERROR
> > [org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase]
> > (pool-5-thread-50) [12561529] Error code SNAPSHOT_FAILED and error
> > message VDSGenericException: VDSErrorException: Failed to
> > SnapshotVDS, error = Snapshot failed 2012-12-13 10:40:24,372 INFO
> > [org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase]
> > (pool-5-thread-50) [12561529] Command
> > org.ovirt.engine.core.vdsbroker.vdsbroker.SnapshotVDSCommand return
> > value Class Name:
> > org.ovirt.engine.core.vdsbroker.vdsbroker.StatusOnlyReturnForXmlRpc
> >
> > 
> mStatus                       Class Name:
> org.ovirt.engine.core.vdsbroker.vdsbroker.StatusForXmlRpc
> > mCode                         48 mMessage
> > Snapshot failed
> > 
> > 
> > 
> > enter/6d91788c-99d9-11e1-b913-78e7d1cbc201/mastersd/master/tasks/21cbcc25-7672-4704-a414-a44f5e9944ed
> > temp
> > /rhev/data-center/6d91788c-99d9-11e1-b913-78e7d1cbc201/mastersd/maste
> >
> > 
> r/tasks/21cbcc25-7672-4704-a414-a44f5e9944ed.temp
> > 21cbcc25-7672-4704-a414-a44f5e9944ed::ERROR::2012-12-14
> > 10:48:41,189::volume::492::Storage.Volume::(create) Unexpected
> > error Traceback (most recent call last): File
> > "/usr/share/vdsm/storage/volume.py", line 475, in create
> > srcVolUUID, imgPath, volPath) File
> > "/usr/share/vdsm/storage/fileVolume.py", line 138, in _create
> > oop.getProcessPool(dom.sdUUID).createSparseFile(volPath,
> > sizeBytes) File "/usr/share/vdsm/storage/remoteFileHandler.py",
> > line 277, in callCrabRPCFunction *args, **kwargs) File
> > "/usr/share/vdsm/storage/remoteFileHandler.py", line 195, in
> > callCrabRPCFunction raise err IOError: [Errno 27] File too large
> > 
> > 2012-12-13 10:40:24,372 INFO
> > [org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase]
> > (pool-5-thread-50) [12561529] Vds: virthost01 2012-12-13
> > 10:40:24,372 ERROR [org.ovirt.engine.core.vdsbroker.VDSCommandBase]
> > (pool-5-thread-50) [12561529] Command SnapshotVDS execution failed.
> > Exception: VDSErrorException: VDSGenericException:
> > VDSErrorException: Failed to SnapshotVDS, error = Snapshot failed
> > 2012-12-13 10:40:24,373 INFO
> > [org.ovirt.engine.core.vdsbroker.vdsbroker.SnapshotVDSCommand]
> > (pool-5-thread-50) [12561529] FINISH, SnapshotVDSCommand, log id:
> > 46d21393 2012-12-13 10:40:24,373 ERROR
> > [org.ovirt.engine.core.bll.CreateAllSnapshotsFromVmCommand]
> > (pool-5-thread-50) [12561529] Wasnt able to live snpashot due to
> > error: VdcBLLException: VdcBLLException:
> > org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException:
> > VDSGenericException: VDSErrorException: Failed to SnapshotVDS,
> > error = Snapshot failed, rolling back. 2012-12-13 10:40:24,376
> > ERROR [org.ovirt.engine.core.bll.CreateSnapshotCommand]
> > (pool-5-thread-50) [4fd6c4e4] Ending command with failure:
> > org.ovirt.engine.core.bll.CreateSnapshotCommand 2012-12-13 1
> > 
> > 21cbcc25-7672-4704-a414-a44f5e9944ed::ERROR::2012-12-14
> > 10:48:41,196::task::833::TaskManager.Task::(_setError)
> > Task=`21cbcc25-7672-4704-a414-a44f5e9944ed`::Unexpected error
> > Traceback (most recent call last): File
> > "/usr/share/vdsm/storage/task.py", line 840, in _run return
> > fn(*args, **kargs) File "/usr/share/vdsm/storage/task.py", line
> > 307, in run return self.cmd(*self.argslist, **self.argsdict) File
> > "/usr/share/vdsm/storage/securable.py", line 68, in wrapper return
> > f(self, *args, **kwargs) File "/usr/share/vdsm/storage/sp.py", line
> > 1903, in createVolume srcImgUUID=srcImgUUID,
> > srcVolUUID=srcVolUUID) File "/usr/share/vdsm/storage/fileSD.py",
> > line 258, in createVolume volUUID, desc, srcImgUUID, srcVolUUID)
> > File "/usr/share/vdsm/storage/volume.py", line 494, in create
> > (volUUID, e)) VolumeCreationError: Error creating a new volume:
> > ('Volume creation 6da02c1e-5ef5-4fab-9ab2-bb081b35e7b3 failed:
> > [Errno 27] File too large',)
> > 
> > 
> > 
> > ----- Original Message -----
> >> From: "Ricky Schneberger" <ricky at schneberger.se> To: "Haim Ateya"
> >> <hateya at redhat.com> Cc: users at ovirt.org Sent: Thursday, December
> >> 20, 2012 5:52:10 PM Subject: Re: [Users] Problems when trying to
> >> delete a snapshot
> >> 
> > Hi, The task did not finished but it broked my VM. What I have
> > right now is a VM with a base-image and a snapshot that I need to
> > merge together so I can import the disk in a new VM.
> > 
> > I have attached the logs and even the output from the
> > tree-command.
> > 
> > Regards //
> > 
> > Ricky
> > 
> > 
> > 
> > On 2012-12-16 08:35, Haim Ateya wrote:
> >>>> please attach full engine and vdsm log from SPM machine.
> >>>> also, did the task finished ? please run tree command for
> >>>> /rhev/data-center/.
> >>>> 
> >>>> ----- Original Message -----
> >>>>> From: "Ricky Schneberger" <ricky at schneberger.se> To:
> >>>>> users at ovirt.org Sent: Friday, December 14, 2012 3:16:58 PM
> >>>>> Subject: [Users] Problems when trying to delete a snapshot
> >>>>> 
> >>>> I was trying to delete a snapshot from one of my VM and
> >>>> everything started fine.
> >>>> 
> >>>> The disk image is a thin provisioned 100GB disk with 8GB
> >>>> data. I just hade one snapshot and it was that one I started
> >>>> to delete. After more than two hours I look in the folder
> >>>> with that VMs disk images and found out that there was i new
> >>>> created file with a size of around 650GB and it was still
> >>>> growing.
> >>>> 
> >>>> -rw-rw----. 1 vdsm kvm   8789950464 14 dec 12.23
> >>>> 8ede8e53-1323-442b-84f2-3c94114c64cf -rw-r--r--. 1 vdsm kvm
> >>>> 681499951104 14 dec 14.10
> >>>> 8ede8e53-1323-442b-84f2-3c94114c64cf_MERGE -rw-r--r--. 1 vdsm
> >>>> kvm 272 14 dec 12.24
> >>>> 8ede8e53-1323-442b-84f2-3c94114c64cf.meta -rw-rw----. 1 vdsm
> >>>> kvm 107382439936  6 jun  2012
> >>>> b4a43421-728b-4204-a389-607221d945b7 -rw-r--r--. 1 vdsm kvm
> >>>> 282 14 dec 12.24 b4a43421-728b-4204-a389-607221d945b7.meta
> >>>> 
> >>>> Any idea what is happening?
> >>>> 
> >>>> Regards
> >>>>> 
> >>>>> _______________________________________________ Users
> >>>>> mailing list Users at ovirt.org
> >>>>> http://lists.ovirt.org/mailman/listinfo/users
> >>>>> 
> >> 
> 
> - --
> Ricky Schneberger
> 
> - ------------------------------------
> "Not using free exhaust energy to help your engine breathe is
> downright
> criminal"
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