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    SubjectRe: 2.6.13-rc3-mm1: mount problems w/ 3ware on dual Opteron
    Date
    On Friday, 15 of July 2005 10:36, Andrew Morton wrote:
    >
    > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.13-rc3/2.6.13-rc3-mm1/
    >
    > (http://www.zip.com.au/~akpm/linux/patches/stuff/2.6.13-rc3-mm1.gz until
    > kernel.org syncs up)

    Apparently, mount does not work with partitions located on a 3ware RAID
    (8006-2PL controller) in a dual-Opteron box (64-bit kernel).

    If the kernel is configured with preemption and NUMA, it cannot mount any
    "real" filesystems and the output of "mount" is the following:

    rootfs on / type ext3 (rw)
    /dev/root on / type ext3 (rw)
    proc on /proc type proc (rw,nodiratime)
    sysfs on /sys type sysfs (rw)
    tmpfs on /dev/shm type tmpfs (rw)

    (hand-copied from the screen). I have tried some other combinations (ie.
    preemption w/o NUMA, NUMA w/o preemption etc.) and it seems that it works
    better with CONFIG_PREEMPT_NONE set, although even it this case some
    filesystems are mounted read-only.

    The mainline kernels (ie. -rc3 and -rc3-git[1-4]) have no such problems.

    Greets,
    Rafael


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