MCSG: When to vgimport/export¶
- Title:
MCSG: When to vgimport/export
- Author:
Douglas O’Leary <dkoleary@olearycomputers.com>
- Description:
MCSG: When to vgimport/export
- Date created:
06/2007
- Date updated:
07/2008
- Disclaimer:
Standard: Use the information that follows at your own risk. If you screw up a system, don’t blame it on me…
Keeping logical volume and volume group information consistent across cluster nodes is important for obvious reasons. In the event of a failover, if filesystems can’t be mounted because they don’t exist on the adoptive node, then bad things are likely to result. The question, then, is when do you have to export and import volume groups?
The answer is remarkably easy: any time a device file is created, deleted, or otherwise modified. Examples of when to export/import:
Adding/removing disks to/from a volume group
Adding/deleting logical volumes for a volume group
You normally should not have to export/import for a standard filesystem extension.