From: Andreas Dilger <adilger@turbolabs.com>
To: linux-lvm@sistina.com
Subject: Re: [linux-lvm] snapshots
Date: Thu, 18 Oct 2001 15:11:44 -0600 [thread overview]
Message-ID: <20011018151144.N1144@turbolinux.com> (raw)
In-Reply-To: <MGEFJOBFIEAIADIKAMEKCECCCDAA.rdyas@adelphia.net>
On Oct 18, 2001 16:35 -0400, Robert Dyas wrote:
> 1)Has anyone had any luck creating a snapshot (lvcreate -L100M -s -n backup
> /dev/vg_master/lv_home) and then mounting it (mount -r /dev/vg_master/backup
> /mnt)? If so, what version of the kernel, mount tools, filesystem, etc are
> you using?
Yes, but I don't know the exact versions.
> 2) How can you use the snapshot feature to facilitate incremental or
> differential backups? Wouldn't the dump or other backup program have to
> twiddle the archive bit, but won't be able to since snapshots are readonly?
Um, "archive bit" is a severe DOS-ism, which doesn't exist in Unix. An
incremental backup on Unix is based on the file modification timestamp
which does not need to be changed when doing the backup.
Cheers, Andreas
--
Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto,
\ would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert
next prev parent reply other threads:[~2001-10-18 21:11 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-18 20:35 [linux-lvm] snapshots Robert Dyas
2001-10-18 21:11 ` Andreas Dilger [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-09-10 23:25 [linux-lvm] Snapshots jonr
2009-09-11 9:14 ` Peter Keller
2009-09-11 13:39 ` André Gillibert
2009-09-17 14:24 Jon Hardcastle
2009-09-17 14:37 ` Peter Keller
2012-02-16 13:25 Mark Woodward
2012-02-16 13:57 ` Mike Snitzer
2012-02-16 14:05 ` Marco Pizzoli
2012-02-17 15:20 ` Mike Snitzer
2012-02-16 14:42 ` Mark Woodward
2012-02-16 15:18 ` Stuart D. Gathman
2012-02-16 15:54 ` Mike Snitzer
2012-02-17 4:46 ` Stuart D. Gathman
2012-02-17 13:56 ` Mike Snitzer
2012-02-16 16:51 ` Bryn M. Reeves
2012-02-16 15:43 ` Mike Snitzer
2012-02-16 16:04 ` Mark Woodward
2012-02-16 16:09 ` Mike Snitzer
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