On Sun, May 8, 2016 at 12:56 PM, Maor Lipchuk <mlipchuk@redhat.com> wrote:
> Hi,
>
> I've been trying to remove a single snapshot and consistently fail with the
> following error (see [1]).
>
> Those are my steps:
> 1. Create a VM + Disk
> 2. Create a snapshot
> 3. Remove the snapshot
>
> My VDSM is the latest (commit d7796fb8bdd5b424ecad54dc36cb58cd477b3224)
>
> Is there a bug open on it? or even better, fixing patches?
>
> [1]
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,296::fileVolume::573::Storage.Volume::(rename) Renaming
> /rhev/data-center/mnt/10.35.16.43:_export_data9/e562ec63-b734-4554-b8
> 2c-7fc8314c352f/images/c26b2f00-563f-4965-8bcd-e7ca8ead1625/903f5a13-f7e4-4222-bb02-303019756bb9.lease
> to
> /rhev/data-center/mnt/10.35.16.43:_export_data9/e562ec63-b734-4554-b82c-7fc8314c352f
> /images/c26b2f00-563f-4965-8bcd-e7ca8ead1625/_remove_me_LGQXBkpd_903f5a13-f7e4-4222-bb02-303019756bb9.lease
> 5b61867b-6dd4-4224-be4a-859904e3298b::ERROR::2016-05-08
> 12:34:22,298::image::1338::Storage.Image::(merge) can't set attribute
> Traceback (most recent call last):
>   File "/usr/share/vdsm/storage/image.py", line 1321, in merge
>     [vols[vName] for vName in chain])
>   File "/usr/share/vdsm/storage/image.py", line 1146, in _baseRawVolumeMerge
>     srcVol.rename(tmpUUID)
>   File "/usr/share/vdsm/storage/fileVolume.py", line 580, in rename
>     self._manifest.volumePath = volPath
> AttributeError: can't set attribute

I think this is a bug introduced during the sdm refactorings, and I
also reproduced it once
but did not have time to investigate it yet.

If the code expect the replace a volume path during runtime, we should
have a setter:

@property
def volumePath(self):
    return self._volumePath

@volumePath.setter
def volumePath(self, value):
    self._volumePath = value

You can try add this to the manifest class and see if it fixes this issue.

Nir

> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::628::Storage.ResourceManager::(releaseResource)
> Trying to release resource 'e562ec63-b734-4554-b82c-7fc
> 8314c352f_imageNS.c26b2f00-563f-4965-8bcd-e7ca8ead1625'
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::647::Storage.ResourceManager::(releaseResource)
> Released resource 'e562ec63-b734-4554-b82c-7fc8314c352f
> _imageNS.c26b2f00-563f-4965-8bcd-e7ca8ead1625' (0 active users)
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::653::Storage.ResourceManager::(releaseResource)
> Resource 'e562ec63-b734-4554-b82c-7fc8314c352f_imageNS.
> c26b2f00-563f-4965-8bcd-e7ca8ead1625' is free, finding out if anyone is
> waiting for it.
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::628::Storage.ResourceManager::(releaseResource)
> Trying to release resource 'e562ec63-b734-4554-b82c-7fc
> 8314c352f_volumeNS.903f5a13-f7e4-4222-bb02-303019756bb9'
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::647::Storage.ResourceManager::(releaseResource)
> Released resource 'e562ec63-b734-4554-b82c-7fc8314c352f
> _volumeNS.903f5a13-f7e4-4222-bb02-303019756bb9' (0 active users)
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::653::Storage.ResourceManager::(releaseResource)
> Resource 'e562ec63-b734-4554-b82c-7fc8314c352f_volumeNS
> .903f5a13-f7e4-4222-bb02-303019756bb9' is free, finding out if anyone is
> waiting for it.
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::661::Storage.ResourceManager::(releaseResource)
> No one is waiting for resource 'e562ec63-b734-4554-b82c
> -7fc8314c352f_volumeNS.903f5a13-f7e4-4222-bb02-303019756bb9', Clearing
> records.
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::628::Storage.ResourceManager::(releaseResource)
> Trying to release resource 'e562ec63-b734-4554-b82c-7fc
> 8314c352f_volumeNS.e6d9874a-8225-44e1-9440-0a3cfd4ea7fc'
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,299::resourceManager::647::Storage.ResourceManager::(releaseResource)
> Released resource 'e562ec63-b734-4554-b82c-7fc8314c352f
> _volumeNS.e6d9874a-8225-44e1-9440-0a3cfd4ea7fc' (0 active users)
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,300::resourceManager::653::Storage.ResourceManager::(releaseResource)
> Resource 'e562ec63-b734-4554-b82c-7fc8314c352f_volumeNS
> .e6d9874a-8225-44e1-9440-0a3cfd4ea7fc' is free, finding out if anyone is
> waiting for it.
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,300::resourceManager::661::Storage.ResourceManager::(releaseResource)
> No one is waiting for resource 'e562ec63-b734-4554-b82c
> -7fc8314c352f_volumeNS.e6d9874a-8225-44e1-9440-0a3cfd4ea7fc', Clearing
> records.
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,300::resourceManager::661::Storage.ResourceManager::(releaseResource)
> No one is waiting for resource 'e562ec63-b734-4554-b82c
> -7fc8314c352f_imageNS.c26b2f00-563f-4965-8bcd-e7ca8ead1625', Clearing
> records.
> 5b61867b-6dd4-4224-be4a-859904e3298b::ERROR::2016-05-08
> 12:34:22,300::task::868::Storage.TaskManager.Task::(_setError)
> Task=`5b61867b-6dd4-4224-be4a-859904e3298b`::Unexpected error
> Traceback (most recent call last):
>   File "/usr/share/vdsm/storage/task.py", line 875, in _run
>     return fn(*args, **kargs)
>   File "/usr/share/vdsm/storage/task.py", line 334, in run
>     return self.cmd(*self.argslist, **self.argsdict)
>   File "/usr/lib/python2.7/site-packages/vdsm/storage/securable.py", line
> 78, in wrapper
>     return method(self, *args, **kwargs)
>   File "/usr/share/vdsm/storage/sp.py", line 1862, in mergeSnapshots
>     sdUUID, vmUUID, imgUUID, ancestor, successor, postZero)
>   File "/usr/share/vdsm/storage/image.py", line 1339, in merge
> :    raise se.SourceImageActionError(imgUUID, sdUUID, str(e))
> SourceImageActionError: Error during source image manipulation:
> "image=c26b2f00-563f-4965-8bcd-e7ca8ead1625, source
> domain=e562ec63-b734-4554-b82c-7fc8314c352f: can't set attribute"
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,300::task::887::Storage.TaskManager.Task::(_run)
> Task=`5b61867b-6dd4-4224-be4a-859904e3298b`::Task._run:
> 5b61867b-6dd4-4224-be4a-859904e3298b () {} failed - stopping task
> 5b61867b-6dd4-4224-be4a-859904e3298b::DEBUG::2016-05-08
> 12:34:22,300::task::1248::Storage.TaskManager.Task::(stop)
> Task=`5b61867b-6dd4-4224-be4a-859904e3298b`::stopping in state running
> (force False)
>
>
>
> Regards,
> Maor
>
>

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