We have a Debian Wheezy server using mirrored RAID running kernel 3.2.0-1-amd64 and LVM version 2.02.88-2. There seems to be an issue where snapshot removal fails due to being "in use" the first time, but repeating the operation will succeed: # lvcreate --size 128M --name testvolume buildturbo64 Logical volume "testvolume" created # lvcreate --size 128M --snapshot --name testsnap buildturbo64/testvolume Logical volume "testsnap" created # lvremove buildturbo64/testsnap Do you really want to remove active logical volume testsnap? [y/n]: y LV buildturbo64/testsnap in use: not deactivating Unable to deactivate logical volume "testsnap" # lvremove buildturbo64/testsnap Do you really want to remove active logical volume testsnap? [y/n]: y Logical volume "testsnap" successfully removed # lvremove buildturbo64/testvolume Do you really want to remove active logical volume testvolume? [y/n]: y Logical volume "testvolume" successfully removed Note that no filesystem is even created here, so it's not mounted or anything. That volume group has plenty of free extents (vgdisplay excerpt): Alloc PE / Size 52353 / 204.50 GiB Free PE / Size 66794 / 260.91 GiB This is repeatable every time and waiting arbitrary delays between the operations makes no difference. There is no difference if the logical volume is specified by its device node (/dev/buildturbo64/testsnap). Under a *non-RAID* Debian Wheezy VM with an otherwise identical configuration, lvremove works first time, as I'd expect. Is this a bug, or some form of user error? Here is the verbose output of the remove steps, if that is helpful: # lvremove --verbose buildturbo64/testsnap Using logical volume(s) on command line Do you really want to remove active logical volume testsnap? [y/n]: y Archiving volume group "buildturbo64" metadata (seqno 117). Removing snapshot testsnap Found volume group "buildturbo64" Found volume group "buildturbo64" Loading buildturbo64-testvolume table (254:3) Loading buildturbo64-testsnap table (254:5) Suspending buildturbo64-testvolume (254:3) with device flush Suspending buildturbo64-testsnap (254:5) with device flush Suspending buildturbo64-testvolume-real (254:6) with device flush Suspending buildturbo64-testsnap-cow (254:7) with device flush Found volume group "buildturbo64" Resuming buildturbo64-testsnap-cow (254:7) Resuming buildturbo64-testvolume-real (254:6) Resuming buildturbo64-testsnap (254:5) Removing buildturbo64-testsnap-cow (254:7) Found volume group "buildturbo64" Resuming buildturbo64-testvolume (254:3) Removing buildturbo64-testvolume-real (254:6) Found volume group "buildturbo64" LV buildturbo64/testsnap in use: not deactivating Unable to deactivate logical volume "testsnap" # lvremove --verbose buildturbo64/testsnap Using logical volume(s) on command line Do you really want to remove active logical volume testsnap? [y/n]: y Archiving volume group "buildturbo64" metadata (seqno 118). Found volume group "buildturbo64" Removing buildturbo64-testsnap (254:5) Releasing logical volume "testsnap" Creating volume group backup "/etc/lvm/backup/buildturbo64" (seqno 119). Logical volume "testsnap" successfully removed -- Philip Boulain Developer philip.boulain@smoothwall.net Smoothwall Ltd 1 John Charles Way, Leeds, LS12 6QA United Kingdom Telephone: USA: 1 800 959 3760 Europe: +44 (0) 8701 999500 www.smoothwall.net Smoothwall Limited is registered in England, Company Number: 4298247. This email and any attachments transmitted with it are confidential to the intended recipient(s) and may not be communicated to any other person or published by any means without the permission of Smoothwall Limited. Any opinions stated in this message are solely those of the author. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
