Re: [SLE] Stiffy recovery tools

From: Graham Smith (gqs_at_iinet.net.au)
Date: 11/29/04

  • Next message: P.M. Groen: "[SLE] SuSE 9.2 and startup" 
    To: suse-linux-e@suse.com
Date: Tue, 30 Nov 2004 00:13:40 +1100

    On Mon, 29 Nov 2004 22:54, Hans du Plooy wrote:
    > On Friday 26 November 2004 15:58, Graham Smith wrote:
    > > I don't know if this will help but there is a package called ddrescue on
    > > the SuSE distribution.
    >
    > I thought of that, but didn't know if that would help. How did you do
    > this?

    I used it to retreive a file off a floppy. The command I used was the same as
    I would use for cp.
    dd_rescue /media/floppy/<filename> ./<new_filename>

    It appears to change the blocksize down to where it is can retreive data from
    the source. I believe it can act the same a dd and copy a whole image at once
    although I haven't tried using that function.

    ddrescue - Data Copying in the Presence of I/O Errors
    Dd_rescue helps when nobody else will: your disk has crashed and you try to
    copy it over to another one. While standard Unix tools like cp, cat, and dd
    wail "abort" on every I/O error, dd_rescue will not.

    The following is the output of dd_rescue without any options given
    ======================================================
    dd_rescue Version 1.10, garloff@suse.de, GNU GPL
     ($Id: dd_rescue.c,v 1.46 2004/08/28 21:45:09 garloff Exp $)
    dd_rescue copies data from one file (or block device) to another
    USAGE: dd_rescue [options] infile outfile
    Options: -s ipos start position in input file (default=0),
             -S opos start position in output file (def=ipos);
             -b softbs block size for copy operation (def=65536),
             -B hardbs fallback block size in case of errs (def=512);
             -e maxerr exit after maxerr errors (def=0=infinite);
             -m maxxfer maximum amount of data to be transfered (def=0=inf);
             -l logfdile name of a file to log errors and summary to (def="");
             -r reverse direction copy (def=forward);
             -t truncate output file (def=no);
             -d/D use O_DIRECT for input/output (def=no);
             -w abort on Write errors (def=no);
             -a spArse file writing (def=no),
             -A Always write blocks, zeroed if err (def=no);
             -i interactive: ask before overwriting data (def=no);
             -f force: skip some sanity checks (def=no);
             -p preserve: preserve ownership / perms (def=no)
             -q quiet operation,
             -v verbose operation;
             -V display version and exit;
             -h display this help and exit.
    Note: Sizes may be given in units b(=512), k(=1024), M(=1024^2) or G(1024^3)
    bytes
    This program is useful to rescue data in case of I/O errors, because
     it does not necessarily abort or truncate the output.
    ==========================================================

    Just install it and give it a try. 

    -- 
Regards,
Graham Smith
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