On Aug 30, 2013 1:46 AM, "Jed Laundry" <[email protected]> wrote: > > If it's Linux, are you using LVM as a storage layer? > > LVM snapshots are your friend for making a consistent backup, regardless of > if you use a tar script or VM snapshot/image.
Unless developers have made major structural changes to LVM snapshots they're nearly useless. They require large swaths of contiguous kernel RAM for the CoW bitmap so once a machine is running for a while and thus has fragmented its RAM free space you end up with LVM bailing out while trying to snapshot. The other side of that is if your snapshot routine doesn't shutdown services and unmount the filesystem you're essentially snapshotting a crashed server and hoping filesystem and database recovery goes well when you restore that "backup" > > Thanks, > Jed. > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
