[Users] Can't delete snapshot

[Eduardo Ramos]

Hi friends!

I'm trying delete a snapshot but webadmin returns me:

"Failed to complete Snapshot bla deletion on VM piromba.dem.inpe.br."

In vdsm.log of SPM, I got:

Oct 10 16:24:10 newton kernel: end_request: I/O error, dev dm-24, sector 
2147483632
Oct 10 16:24:10 newton kernel: end_request: I/O error, dev dm-24, sector 0
Oct 10 16:24:11 newton kernel: end_request: I/O error, dev dm-24, sector 
2147483520
Oct 10 16:24:11 newton kernel: end_request: I/O error, dev dm-24, sector 
2147483632
Oct 10 16:24:11 newton kernel: end_request: I/O error, dev dm-24, sector 0
Oct 10 16:24:11 newton kernel: end_request: I/O error, dev dm-24, sector 
2147483520
Oct 10 16:24:11 newton kernel: end_request: I/O error, dev dm-24, sector 
2147483632
Oct 10 16:24:11 newton kernel: end_request: I/O error, dev dm-24, sector 0
Oct 10 16:24:12 newton vdsm TaskManager.Task ERROR 
Task=`767206b3-87e9-4686-b06c-6fba24bdb677`::Unexpected 
error#012Traceback (most recent call last):#012  File 
"/usr/share/vdsm/storage/task.py", line 861, in _run#012    return 
fn(*args, **kargs)#012  File "/usr/share/vdsm/storage/task.py", line 
320, in run#012    return self.cmd(*self.argslist, **self.argsdict)#012  
File "/usr/share/vdsm/storage/securable.py", line 63, in wrapper#012    
return f(self, *args, **kwargs)#012  File 
"/usr/share/vdsm/storage/sp.py", line 1786, in mergeSnapshots#012 
image.Image(repoPath).merge(sdUUID, vmUUID, imgUUID, ancestor, 
successor, postZero)#012  File "/usr/share/vdsm/storage/image.py", line 
1084, in merge#012    allVols = sdDom.getAllVolumes()#012  File 
"/usr/share/vdsm/storage/blockSD.py", line 869, in getAllVolumes#012    
return getAllVolumes(self.sdUUID)#012  File 
"/usr/share/vdsm/storage/blockSD.py", line 168, in getAllVolumes#012    
and vImg not in res[vPar]['imgs']:#012KeyError: 
'63650a24-7e83-4c0a-851d-0ce9869a294d'

[root at newton ~]# ls -l /dev/mapper/
total 0
lrwxrwxrwx. 1 root root      8 Oct  8 17:34 1IET_00010001 -> ../dm-24

Anyone knows what is this device?

Thanks.