Hi, Paul Archer wrote on 08.11.2007 at 11:23:48 [Re: [BackupPC-users] Question about LVM restore]: > If I understand you correctly (you have LVM volumes on disks other than the > failed one), then during a reinstall (or even just booting off a live CD) > those volumes will be recognized. If you provide mount points and don't > reformat them, the data should be available without a problem. > Try booting off a live CD and you'll see the volumes get scanned and > recognized.
while VGs with missing disks may work, they are bound to give you more problems than VGs without missing disks. For example, how do you continue after reinstall? I'd suggest creating a second VG for your BackupPC LV: pvcreate /dev/slavedisk1 pvcreate /dev/slavedisk2 vgcreate backup /dev/slavedisk1 /dev/slavedisk2 (replace "slavedisk1" and -2 with whatever your "slave disks" or the partitions on them are called). This probably means you want to use them exclusively for one BackupPC LV. You should bear in mind that without some redundancy mechanism (RAID) a failure of any one of the two disks will probably take your whole pool and all backups with it. This is probably more true with a BackupPC pool than any other file system, as the location of files from one directory tends to be spread out more randomly across the disk(s). Reconsidering your original question, you might be referring to wanting to reinstall Ubuntu without there being a disk failure as cause. Whether you can use your existing VG without problems basically depends on the installer. I would guess there is probably an "expert mode" which will let you do that, but it remains much more simple with an independant VG. The only drawback is that you are less flexible with disk allocation. You cannot extend your backup LV to use part of your so-called "native disk", and you cannot extend other LVs from that disk to the backup disks. This is probably a good thing, though :). Regards, Holger ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
