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    SubjectRe: BUG:write data to degrade raid5
    jin zhencheng wrote:
    > hi;
    >
    > i use kernel is 2.6.26.2
    >
    > what i do as follow:
    >
    > 1, I create a raid5:
    > mdadm -C /dev/md5 -l 5 -n 4 /dev/sda /dev/sdb /dev/sdc /dev/sdd
    > --metadata=1.0 --assume-clean
    >
    > 2, dd if=/dev/zero of=/dev/md5 bs=1M &
    >
    > write data to this raid5
    >
    > 3, mdadm --manage /dev/md5 -f /dev/sda
    >
    > 4 mdadm --manage /dev/md5 -f /dev/sdb
    >
    > if i faild 2 disks ,then the OS kernel display OOP error and kernel down
    >
    >
    > do somebody know why ?
    >
    > Is MD/RAID5 bug ?
    >

    I would usually say that any kernel OOPS is a bug, but in this case,
    what are you running your Linux on, given that you just trashed the
    first four drives? While it's possible to run off of other drives, you
    have to make an effort to configure Linux to do so.

    --
    Bill Davidsen <davidsen@tmr.com>
    "We can't solve today's problems by using the same thinking we
    used in creating them." - Einstein



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