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*SOLVED* vzdump --snapshot [message #14873]

Thu, 12 July 2007 10:56

ugob
Messages: 271
Registered: March 2007

Senior Member

Hi,

Anyone got --snapshot (Use LVM snapshot) with vzdump?

I always get this error

[root@svr~]# vzdump --snapshot 101 --dumpdir /vz/dump/
  /dev/cdrom: open failed: No medium found
starting backup for VPS 101 (/vz/private/101) Thu Jul 12 06:53:52 2007
creating backup for  VPS 101 failed (0.00 minutes): unable to dump into snapshot (use option --dumpdir) at /usr/bin/vzdump line 450.

no matter if I use --dumpdir (to a valid dir like /vz/dump) or not.

Thanks,

Ugo

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

[Updated on: Fri, 13 July 2007 08:00] by Moderator

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Re: vzdump --snapshot [message #14876 is a reply to message #14873]

Thu, 12 July 2007 11:10

ugob
Messages: 271
Registered: March 2007

Senior Member

Update: I managed to get to this point by using --dumpdir /var/

[root@svr var]# vzdump --dumpdir /var/ --snapshot 101
  /dev/cdrom: open failed: No medium found
starting backup for VPS 101 (/vz/private/101) Thu Jul 12 07:08:51 2007
creating lvm snapshot of /dev/mapper/VolGroup00-LogVol02 ('/dev/VolGroup00/vzsnap')
  /dev/cdrom: open failed: No medium found
  Insufficient free extents (1) in volume group VolGroup00: 16 required
  Rounding up size to full physical extent 512.00 MB
umount: /vzsnap: not mounted
  /dev/cdrom: open failed: No medium found
  One or more specified logical volume(s) not found.
creating backup for  VPS 101 failed (0.02 minutes): command '/usr/sbin/lvcreate --size 500m --snapshot --name vzsnap /dev/VolGroup00/LogVol02' failed with exit code 5 at /usr/bin/vzdump line 107.

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

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Re: vzdump --snapshot [message #14880 is a reply to message #14876]

Thu, 12 July 2007 11:30

Vasily Tarasov
Messages: 1345
Registered: January 2006

Senior Member

Dietmar Maurer is the author of vzdump. I sent his e-mail to you via PM. I think he'll be able to help you. After solving the problem, please post here the resolution!

Thanks,
Vasily.

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Re: vzdump --snapshot [message #14886 is a reply to message #14873]

Thu, 12 July 2007 14:40

dietmar
Messages: 54
Registered: March 2007

Member

Quote:

no matter if I use --dumpdir (to a valid dir like /vz/dump) or not.

dumpdir needs to be outside the volume you dump - else your shnaphot will grow recursively - got it?

- Dietmar

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Re: vzdump --snapshot [message #14887 is a reply to message #14886]

Thu, 12 July 2007 14:42

ugob
Messages: 271
Registered: March 2007

Senior Member

Ok, but if I try in /var I have another error... see http://forum.openvz.org/index.php?t=tree&th=2881&mid =14876&&rev=&reveal=

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

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Re: vzdump --snapshot [message #14888 is a reply to message #14887]

Thu, 12 July 2007 14:50

dietmar
Messages: 54
Registered: March 2007

Member

Insufficient free extents (1) in volume group VolGroup00: 16 required[/qoute]

There is no free space in VolGroup00. dm2 snapshots requires space (we try to allocate 512MB) on the VG - like any other partitions.

- Dietmar

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