Just wanted to let you know, that the error no longer occurs since I updated to lvm2-2.02.63-r1.
Regards, Roman Naumann On Sunday 18 April 2010 12:38:45 Roman Naumann wrote: > Hi, > > I'm using LVM, having / and /home as logical volumes and a backup script > creating a logical snapshot volume of each in the process. > > Since I use gentoo (comming from arch), my backup script fails rather often > with the error message 'Can't remove open logical volume <volume>'. The > script worked fine on arch before. The partition setup did not change. > > Sometimes it works fine, sometimes it just fails. > As a workaround, I let the script just lvremove the snapshot three times > with 5 seconds sleeping between the tries and the overall success rate for > the script improved... > The chance is about 40% lvremove succeeds at a given time and doesn't seem > to in- or decrease when calling lvremove successively with a five second > delay, though if it fails once, it tends to fail again more often if > called within the next two or three seconds. > > Here is an example of the command failing once more after the backup script > aborted. The second time it works. I did NOTHING but the commands listed > below in these 30 seconds or so: (note: dmsetup says "open: 0" in the > first place!) > > kira namor # dmsetup info -c vg-snap_root > Name Maj Min Stat Open Targ Event UUID > vg-snap_root 253 5 L--w 0 1 0 LVM- > ayg5GD1dYyrkkan1pLa8WszI7UrQpy9YE2ynOTtHoSNckKdehm3XMIgkw7p8z69X > kira namor # lvremove /dev/vg/snap_root > Can't remove open logical volume "snap_root" > kira namor # lsof /dev/vg/snap_root > kira namor # fuser -a /dev/vg/snap_root > /dev/vg/snap_root: > kira namor # lvremove /dev/vg/snap_root > Do you really want to remove active logical volume snap_root? [y/n]: y > Logical volume "snap_root" successfully removed > > What I tried so far was: > -> calling: lvchange -an $SNAP_PARTITION #fails iff lvremove fails > -> updating to lvm2-2.02.56-r3 and updating the initramfs #fixes nothing > > I have no idea what causes this random behavior. > Help much appreciated. > > Regards, > Roman Naumann
