Encountered it while trying to delete local SR.
Apr 28 14:32:21 localhost SM: [19392] LVMCache: refreshing
Apr 28 14:32:21 localhost SM: [19392] ['/bin/xenvm', 'lvs', '--noheadings', '--units', 'b', '-o', '+lv_tags', '/dev/VG_Xen
Storage-90982251-79e0-8176-010f-ff65bb4c0f1d']
Apr 28 14:32:21 localhost SM: [19392] pread SUCCESS
Apr 28 14:32:21 localhost SM: [19392] ['/bin/xenvm', 'pvs', '/dev/disk/by-id/ata-WDC_WD2502ABYS-18B7A0_WD-WCAT18036412-par
t3']
Apr 28 14:32:21 localhost SM: [19392] FAILED in util.pread: (rc 1) stdout: '', stderr: 'xenvm: unknown command `pvs'
Apr 28 14:32:21 localhost SM: [19392] Usage: xenvm COMMAND ...
Apr 28 14:32:21 localhost SM: [19392] Try `xenvm --help' for more information.
Apr 28 14:32:21 localhost SM: [19392] '
Apr 28 14:32:22 localhost SM: [19392] Raising exception [93, pvs failed [opterr=error is 1]]
Apr 28 14:32:22 localhost SM: [19392] lock: released /var/lock/sm/90982251-79e0-8176-010f-ff65bb4c0f1d/sr
Apr 28 14:32:22 localhost SM: [19392] ***** generic exception: sr_delete: EXCEPTION <class 'SR.SROSError'>, pvs failed [op
terr=error is 1]
Apr 28 14:32:22 localhost SM: [19392] File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr 28 14:32:22 localhost SM: [19392] return self._run_locked(sr)
Apr 28 14:32:22 localhost SM: [19392] File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr 28 14:32:22 localhost SM: [19392] rv = self._run(sr, target)
Apr 28 14:32:22 localhost SM: [19392] File "/opt/xensource/sm/SRCommand.py", line 299, in _run
Apr 28 14:32:22 localhost SM: [19392] return sr.delete(self.params['sr_uuid'])
Apr 28 14:32:22 localhost SM: [19392] File "/opt/xensource/sm/LVMSR", line 575, in delete
Apr 28 14:32:22 localhost SM: [19392] lvutil.removeVG(self.root, self.vgname)
Apr 28 14:32:22 localhost SM: [19392] File "/opt/xensource/sm/lvutil.py", line 429, in removeVG
Apr 28 14:32:22 localhost SM: [19392] opterr='error is %d' % inst.code)
Apr 28 14:32:22 localhost SM: [19392] File "/opt/xensource/sm/xs_errors.py", line 52, in __init__
Apr 28 14:32:22 localhost SM: [19392] raise SR.SROSError(errorcode, errormessage)
Apr 28 14:32:22 localhost SM: [19392]
Apr 28 14:32:22 localhost SM: [19392] ***** Local VHD on LVM: EXCEPTION <class 'SR.SROSError'>, pvs failed [opterr=error i
s 1]