Re: Backup solutions

From: Robert Watson (rwatson_at_FreeBSD.org)
Date: 11/26/05

  • Next message: Eric Anderson: "Re: Backup solutions" 
    Date: Sat, 26 Nov 2005 12:32:26 +0000 (GMT)
To: Eric Anderson <anderson@centtech.com>

    On Thu, 17 Nov 2005, Eric Anderson wrote:

    >> FWIW, i have read that by far the best is dump, because of the way it
    >> deals with the raw data. No need to worry bout files with holes in them
    >> (with other backup tools, this could mean you may not be able to fit
    >> the file system back on after backup, if there are core files etc) I
    >> believe i read this in the O'Rielly text Unix Power Tools, but could be
    >> wrong. They also referenced an extensive test that was done by someone,
    >> and gave the link. I will post it if i find it.
    >
    > rsync handles sparse files just fine.

    The problem I've had with rsync is that it wants to build a list of all
    files to be backed up. On my cyrus server, I have file systems with >6m
    files. This causes rsync to core dump when it discovers it can't allocate
    memory to hold the entire list at once.

    Recently I've taken to backing up with dump -L, as the snapshot facility
    means recovery after a failure is a lot easier -- you no longer have to
    worry about the fact that the first file in a directory might be backed up
    at 10:00am, and the second at 2:00pm, causing applications to get very
    upset.

    Robert N M Watson
    _______________________________________________
    freebsd-isp@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-isp
    To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"

  • Next message: Eric Anderson: "Re: Backup solutions"