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okun
n00b
Joined: 14 Oct 2002
Posts: 9
Location: Finland
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 Posted: Fri Apr 11, 2003 11:32 am Post subject: LVM b0rked |
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I have 2.4.20-openmosix-r2 kernel installed and LVM compiled into the kernel. I have VG data in which I have /home and /var partitions as LVs. Now I had some 700 MB of unpartitioned space in that VG I planned to use for snapshots to backup my data. Of course this was a good idea, but bad result.
What i did: I created a snapshot volume:
| Code: | | lvcreate -l 151 -s -n backup /dev/data/home |
and mounted it into /mnt/bkp/home. Then I backed it up using rsync. All was still fine. This is the good part, I've got backups.
Now I tried to remove the lv and all #$* broke loose. lvremove seg faulted. I'm using LVM tools version 1.0.7. It did remove the special device from the /dev/data but did not free the space allocated for it in the VG. Also lot's of tools seem to hang and always because of the following:
| Code: | | lvm_get_iop_version -- LEAVING with ret: 10 |
which according to man pages indicates
| Code: | | 10 error removing logical volume from kernel |
Now it seems my metadata is corrupted but I do have backups in /etc/lvmconf. But you can't do vgcfgrestore while VG is active. And vgchange will hang because of the above. So I take it, it won't reboot either.
I have /home shared by nfs. Might that be the prob? I'm totally puzzled, any help is appreciated. |
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okun
n00b
Joined: 14 Oct 2002
Posts: 9
Location: Finland
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| Posted: Fri Apr 11, 2003 11:54 am Post subject: Replication |
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| I tried to replicate this using a laptop with linux-2.4.19-gentoo-r10 and the same version of tools (1.0.7) but it did not fail. It removed the lv succesfully. This little piece of information might help a bit solving the origin. |
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okun
n00b
Joined: 14 Oct 2002
Posts: 9
Location: Finland
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| Posted: Fri Apr 11, 2003 8:54 pm Post subject: LVM recovered |
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As the night fell, I dared to reboot the system, ready to work all night to get it right. Well the job was easier than I thought. Just rebooted and used lvremove. This time it didn't hang or seg fault or anything. All went smoothly. What a relief...  |
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