RHEV: Snapshot deletion failed with "Failed to complete <snapshot_name> deletion on VM <vm_name>".
Issue
An attempt to delete a snapshot failed.
The vdsm logs on the SPM host contained;
50190057-98b2-4bd1-9531-1f5db1d11b2b::DEBUG::2013-05-18 14:22:51,653::volume::925::Storage.Volume::(qemuConvert) (qemuConvert): COPY /rhev/data-center/8bb45cef-4209-4b1a-b04b-1cf0652514e9/95a50812-50e8-4011-967b-4e72e6b9c087/images/c757c85c-9426-4a7e-b056-91533f2ff9f5/94768f8e-a481-4256-bde7-25bcf8a67139 (qcow2) to /rhev/data-center/8bb45cef-4209-4b1a-b04b-1cf0652514e9/95a50812-50e8-4011-967b-4e72e6b9c087/images/c757c85c-9426-4a7e-b056-91533f2ff9f5/12461708-252c-4d86-a212-28170cc550f3 (raw) START
50190057-98b2-4bd1-9531-1f5db1d11b2b::DEBUG::2013-05-18 14:22:51,654::volume::935::Storage.Misc.excCmd::(qemuConvert) u'/bin/nice -n 19 /usr/bin/ionice -c 2 -n 7 /usr/bin/qemu-img convert -t none -f qcow2 /rhev/data-center/8bb45cef-4209-4b1a-b04b-1cf0652514e9/95a50812-50e8-4011-967b-4e72e6b9c087/images/c757c85c-9426-4a7e-b056-91533f2ff9f5/94768f8e-a481-4256-bde7-25bcf8a67139 -O raw /rhev/data-center/8bb45cef-4209-4b1a-b04b-1cf0652514e9/95a50812-50e8-4011-967b-4e72e6b9c087/images/c757c85c-9426-4a7e-b056-91533f2ff9f5/12461708-252c-4d86-a212-28170cc550f3' (cwd None)
50190057-98b2-4bd1-9531-1f5db1d11b2b::DEBUG::2013-05-18 14:22:51,759::task::755::TaskManager.Task::(_save) _save: orig /rhev/data-center/8bb45cef-4209-4b1a-b04b-1cf0652514e9/mastersd/master/tasks/50190057-98b2-4bd1-9531-1f5db1d11b2b temp /rhev/data-center/8bb45cef-4209-4b1a-b04b-1cf0652514e9/mastersd/master/tasks/50190057-98b2-4bd1-9531-1f5db1d11b2b.temp
50190057-98b2-4bd1-9531-1f5db1d11b2b::DEBUG::2013-05-18 14:22:51,980::volume::935::Storage.Misc.excCmd::(qemuConvert) FAILED: <err> = ['qemu-img: error while reading']; <rc> = 1
50190057-98b2-4bd1-9531-1f5db1d11b2b::DEBUG::2013-05-18 14:22:52,040::volume::937::Storage.Volume::(qemuConvert) (qemuConvert): COPY /rhev/data-center/8bb45cef-4209-4b1a-b04b-1cf0652514e9/95a50812-50e8-4011-967b-4e72e6b9c087/images/c757c85c-9426-4a7e-b056-91533f2ff9f5/94768f8e-a481-4256-bde7-25bcf8a67139 to /rhev/data-center/8bb45cef-4209-4b1a-b04b-1cf0652514e9/95a50812-50e8-4011-967b-4e72e6b9c087/images/c757c85c-9426-4a7e-b056-91533f2ff9f5/12461708-252c-4d86-a212-28170cc550f3 DONE
50190057-98b2-4bd1-9531-1f5db1d11b2b::ERROR::2013-05-18 14:22:52,041::image::1131::Storage.Image::(merge) Unexpected error
Traceback (most recent call last):
File "/usr/share/vdsm/storage/image.py", line 1111, in merge
File "/usr/share/vdsm/storage/image.py", line 1031, in _baseRawVolumeMerge
MergeSnapshotsError: Error merging snapshots: ('12461708-252c-4d86-a212-28170cc550f3',)
Environment
- Red Hat Enterprise Virtualization Manager (RHEV-M) 3.0.7
- Red Hat Enterprise Virtualization Hypervisor (RHEV-H) 6.2 '20120510.0'
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