lkml.org 
[lkml]   [2002]   [Apr]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Date
    SubjectRe: implementing soft-updates
    On Apr 10, 2002  11:28 +0200, Dominik Kubla wrote:
    > try to implement the snapshot capability for ext2/ext3. Everyone of us
    > who has to do live backups of production systems will thank you if you
    > get that development started.

    LVM can already do snapshots at the device level. It integrates with
    ext3/XFS/reiserfs via sync_super_lockfs/unlockfs so that what is in
    the snapshot is a consistent, clean filesystem.

    There might need to be a little touchup with ext2 to support these
    calls, but even in the current state you get a usable filesystem
    snapshot, with the exception that the filesystem has not been marked
    clean.

    As for a filesystem-level ext2/ext3 snapshot, this has also already
    been done (sf.net/projects/snapfs). The people who took over that
    project have removed all of the released files and CVS, but you can
    still get the CVS from the sourceforge CVS backups. I also have a
    version here, but don't have any time to work on it.

    Cheers, Andreas
    --
    Andreas Dilger
    http://www-mddsp.enel.ucalgary.ca/People/adilger/
    http://sourceforge.net/projects/ext2resize/

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:25    [W:0.025 / U:0.540 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site