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