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    SubjectRe: 2.6.17-mm5
    On Saturday July 1, James.Bottomley@SteelEye.com wrote:
    > On Sat, 2006-07-01 at 14:30 -0700, Andrew Morton wrote:
    > > On Sat, 1 Jul 2006 15:24:19 +0100
    > > Grant Wilson <grant.wilson@zen.co.uk> wrote:
    > >
    > > > More RAID1 problems - OOPS on shutdown.
    >
    > Actually, is there any more of the trace, like what was going on just
    > before the oops?
    >
    > It looks very like a lifetime issue (i.e. md thinks the array is dead
    > and has torn it down, but there's still an outstanding command). It
    > would be nice to know what the outstanding command might have been.

    md writes the superblock after tearing down the array, which is
    admittedly a bit careless.

    The problem seems to be simply that on some hardware at least,
    BIO_RW_BARRIER writes result in an EIO. Don't know why yet.

    NeilBrown
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