- Red Hat Enterprise Linux 5
Sometimes the lvremove fails with 'Can't remove open logical volume "VolumeName"'
# lvremove /dev/VG0/LV4 Can't remove open logical volume "LV4"
The 'mount' command shows it is unmounted
- The 'lsof' command shows no files open from the snapshot mount point
- The 'dmsetup info -c' command shows the LV is still opened.
- FS was unmounted with 'umount -l'
- Stop the third-party process.
- If lazy unmount was used on the FS (i.e. umount -l) then only a reboot will release the opened file(s).
- The Backup exec daemon (beremote) was holding the snapshots opened leading lvremove to fail.
check the major and the minor for the volume.
# dmsetup_info_-c | grep LV4 VG0-LV4 252 4 L--w 1 1 0 LVM-oLlI7fxWpX5fIx8M2mNFCQVyMsAoSmgHPvdQfEY39C95xWHtVcaEQ9nlcucj0Rtl
check which process is referencing the device.
# lsof | grep 253,3 beremote 2308 0 10r BLK 252,4 8880186 /tmp/filexVRTwQ(deleted)
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