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RE: [PLUG] netapp snapshots under linux?
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Jeff,
You may want to check out the Linux LVM,
http://www.sistina.com/products_lvm.htm. I personally haven't used it, but
it seems to be very similar to the HP-UX LVM and can do delta-based
snapshots. Its not quite as integrated into the filesystem as NetApp's
.snapshot's, but it still ought to work.
http://tldp.org/HOWTO/LVM-HOWTO/snapshots_backup.html has more
implementation details. It looks like it is filesystem-aware enough to make
sure the snapshots contain consistent data, so you don't have to worry about
quiesceing the production volumes prior to taking the snapshots (although
the howto doesn't go into much detail on this, so I'm not totally sure).
Looks pretty interesting.
- Sean
> -----Original Message-----
> From: plug-admin@lists.phillylinux.org
> [mailto:plug-admin@lists.phillylinux.org] On Behalf Of Jeff Abrahamson
> Sent: Saturday, January 25, 2003 11:58 PM
> To: PLUG
> Subject: [PLUG] netapp snapshots under linux?
>
>
> If you don't know netapps, one of the cool features for users is that
> you get a magic directory in every directory called .snapshot. In it
> are versions of the directory at predefined previous times. It's very
> nice. Don't like the modifications you just made? Just go and cp the
> old copy back.
>
> I'd like to have something kind of like this. I thought about putting
> /home/jeff under cvs, but some things are under cvs control for other
> reasons, and it'd conflict. (If I put it under cvs, I'd have a cron
> job go around and cvs add and commit every night.) Of course, I'd
> still have problems with cvs rm not being automatic. Etc.
>
> Anyone know of anything (besides rsync snapshotting, which is way too
> non-automatic to recover from) that might provide a snapshot feature
> under linux? I don't see anything on freshmeat or google searching
> except that the kernel's nfs support special cases netapp mounts to
> avoid problems.
>
> --
> Jeff
>
> Jeff Abrahamson <http://www.purple.com/jeff/>
> GPG fingerprint: 1A1A BA95 D082 A558 A276 63C6 16BF 8C4C 0D1D AE4B
>
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