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Re: Using UFS snapshots with tarsnap



On 15/04/2011 21:23, Hywel Mallett wrote:
> I'm a happy tarsnap user, across several FreeBSD systems. However I
> know I should really be backing up snapshots, particularly as I'm
> including PostgreSQL data directories in the backup. I'm familiar
> with snapshots, however, I've read the man page, seen the --snaptime
> option, Googled for examples, but I'm still confused as to the best
> was to do this. Does anyone have any examples of how they're backing
> up using snapshots on a UFS filesystem?

Here's a script I used to use for nightly tarsnap backups -- I've since
switched to using ZFS.   It uses the lockf(1) lock file to do double
duty -- both to ensure that only a single instance of the backup process
is running at any one time, and as the time reference for tarsnap's
--snaptime option.

	Cheers,

	Matthew


-- 
Dr Matthew J Seaman MA, D.Phil.                   7 Priory Courtyard
                                                  Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey     Ramsgate
JID: matthew@infracaninophile.co.uk               Kent, CT11 9PW

Attachment: backupsnap-ufs.sh
Description: Bourne shell script

Attachment: signature.asc
Description: OpenPGP digital signature