Re: Can't *write* to a hard disk, not even a slice using fdisk(8).

From: Julien Gabel (jpeg_at_thilelli.net)
Date: 04/11/04

  • Next message: Julien Gabel: "Re: Can't *write* to a hard disk, not even a slice using fdisk(8)." 
    Date: Sun, 11 Apr 2004 09:31:22 +0200 (CEST)
To: freebsd-questions@freebsd.org

    > GEOM doesn't let you write to an active device, except if you set
    > kern.geom.debugflags=16

    Ok no problem, I changed it this way :
     # sysctl kern.geom.debugflags=16
     kern.geom.debugflags: 1 -> 16

    But it seems to change *absolutly nothing*... :(

    >> # mount
    >> /dev/ar0s1a on / (ufs, local)
    >> devfs on /dev (devfs, local)
    >> /dev/ad8s1d on /home (ufs, local, nodev, noexec, nosuid, with quotas,
    >> soft-updates)
    >> /dev/ar0s1e on /tmp (ufs, local, nodev, nosuid, soft-updates)
    >> /dev/ar0s1f on /usr (ufs, local, soft-updates)
    >> /dev/ar0s1d on /var (ufs, local, noexec, soft-updates)

    > If ad8 is part of ar0 GEOM will try to keep you from shooting yourself
    > on the foot. You should take ad8 out of the array first.

    I don't think so, /dev/ad8 has no problem and is actually in active use.
    Let me be more precise here:

    The "system" (/, /tmp, /usr and /var) is mounted on a mirror represented
    by /dev/ar0 made with /dev/ad4 and /dev/ad6.

    The "data" (/home) was previously mounted on the device /dev/ar1 which was
    made with /dev/ad8 and /dev/ad10.

    Because /dev/ad10 seems to have a problem I made a backup, broke the
    mirror seen as /dev/ar1 and simply put /home on /dev/ad8 - freshly
    restored.

    >> Because the problematic disk is not actually used, I can try some
    >> commands on it if someone think it may be interesting.

    > On the hardware side, you should look for some diagnostic tool from the
    > manufacturer.

    Ok, thanks. 

    --
-jpeg.
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  • Next message: Julien Gabel: "Re: Can't *write* to a hard disk, not even a slice using fdisk(8)."