Les Mikesell wrote:
From the longtime experience direction, be sure to figure out the
snapshotting upfront; a good snapshot rotation can save you so much pain it's not funny; many commercial NAS (NetApp, SnapServer, EMC, etc) have this integrated. When looking at a DIY linux NAS, you may have to roll it up.
I think there are still problems with LVM2 snapshots.
we're hoping to see a major improvement in that situation ( lvm2 / kernel 2.6 / snapshots ) with the CentOS 4.3 release. not too far now :)
Do you know if it is possible to image-copy a snapshot off to another system? A backuppc archive contains so many hardlinks that normal copy techniques are not practical. I currently raid-mirror to external firewire drives that are rotated offsite periodically, but it would probably work better to freeze an LVM snapshot and copy that instead.
hi Les,
you can reverse mount and add-as-share the snapshot, over whatever service you like ( smb, ftp, http-web-dab, nfs ) and backup using whatever means you like.
- K