Re: backup with dd tool

From: Ed Wilts (ewilts_at_ewilts.org)
Date: 05/24/04

  • Next message: Michael Scully: "RE: Hylafax on Enterprise 3" 
    Date: Mon, 24 May 2004 10:33:43 -0500
To: General Red Hat Linux discussion list <redhat-list@redhat.com>

    On Mon, May 24, 2004 at 07:15:17PM +0530, Nabin Limbu wrote:
    > I want to clone my hard disk with dd tool. One of my partition has about 6 GB of
    > contents. so whenI try to backup my partition with the command:
    > dd if=/dev/sda1 bs-512 | gzip -9/mnt/sda3.dd.gz,
    > then I got error saying file size limit exceeded after backing up 2GB. It seems file size
    > has limited only up to 2GB size. Now how can I backup my 6GB content with dd tool.

    Older versions of Linux didn't support files > 2GB - newer ones do. For
    older versions, pipe your gzip command into split. Here's a fragment of
    our really old backup script:
    find $fs -name .nobackup -xdev | sed -e 's|/.nobackup||' > $EXCLUDE
            ( tar czl --ignore-failed-read --exclude-from=${EXCLUDE} -f -$fs \
                || touch $OOPS) | split -b 1000m - ${target}-

    You may also want to look at mondorescue.org for full image-based
    backups. 

    -- 
Ed Wilts, Mounds View, MN, USA
mailto:ewilts@ewilts.org
Member #1, Red Hat Community Ambassador Program
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  • Next message: Michael Scully: "RE: Hylafax on Enterprise 3"

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