On Sat, Nov 06, 2004 at 02:16:46PM -0800, Axel Schweiger wrote: > Can anyon suggest backup/recovery strategies for filesystems under LVM. > (Version 1 and 2) > > 1) If I loose the data in the /etc/lvm directory (or lvm.d) do I loose the > filesystems controlled by lvm? No, those are work files which can be recreated running vgscan for LVM1. LVM1 keeps metadata archive files in /etc/lvmconf/ which needs to be covered by your backup. By default, /etc/lvm/ contains subdirectory for metadata archive in the case of LVM2. Best practice therefore is to backup /etc/lvm* > 2) How do I recover from a loss or corrpution of the LVM data. vgcfgrestore the recent metadata archive (from /etc/lvmconf/ for LVM1 or from /etc/lvm/backup/ for LVM2. > 3) What happens if the LVM filesystems have changed since the last backup of > the metadata? You are refering to VGs and LVs here. If you don't have an actual backup of /etc/lvm* *and* corrupt your LVM metadata on the defices after a change, you can restore the most recent archive from your last /etc/lvmconf/ backup (LVM1) or from /etc/lvm/backup/ (LVM2) which might be ok still or not, depending on your changes. > > Sorry if this shows a profound lack of understanding of LVM but I''m new to > this and haven't been able to find any recipes for doing > backups? The only LVM related backup is about its metadata archives and covered in 'man lvm'. Of course all data stored in LVs should be subject to regular backups as with any block devices. > > Thanks much > Axel > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ -- Regards, Heinz -- The LVM Guy -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Red Hat GmbH Consulting Development Engineer Am Sonnenhang 11 56242 Marienrachdorf Germany Mauelshagen@RedHat.com +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
