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Vzdump VE with XFS - snapshot problem [message #25339]

Thu, 20 December 2007 16:26

lizard
Messages: 11
Registered: October 2007
Location: russia

Junior Member

Hello! Try to dump VE with --snapshot option, but get mounting lvm snapshot error. VE mount on LVM2 volume with XFS. Is anybody solve this problem? Thanks!

~# vzdump --dumpdir /home/user/ --snapshot 102
INFO: starting backup for VPS 102 (/vz/102/private/102)
INFO: creating lvm snapshot of /dev/mapper/vg0-vzservers ('/dev/vg0/vzsnap')
Logical volume "vzsnap" created
INFO: mounting lvm snapshot
mount: wrong fs type, bad option, bad superblock on /dev/vg0/vzsnap,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

umount: /vzsnap: not mounted
Logical volume "vzsnap" successfully removed
ERROR: creating backup for VPS 102 failed (0.00 minutes): command 'mount /dev/vg0/vzsnap /vzsnap' failed with exit code 32 at /usr/bin/vzdump line 290.

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Re: Vzdump VE with XFS - snapshot problem [message #25351 is a reply to message #25339]

Fri, 21 December 2007 00:27

curx
Messages: 739
Registered: February 2006
Location: Nürnberg, Germany

Senior Member

Hi,

it's a know issue:
the snapshot must be mounted with mount-option -o nouuid!

You cant mount a xfs fs with the same uuid, your kernel log or on console (dmesg) should occurs:

[...] XFS: Filesystem lvm(...) has duplicate UUID - can't mount [...]

Btw, it's recommended to setup a OpenVZ with ext3, See http://wiki.openvz.org/Quick_installation#Filesystems

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