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    SubjectRe: [PATCH] Implement barrier support for single device DM devices
    On Tue, Feb 19, 2008 at 02:39:00AM +0000, Alasdair G Kergon wrote:
    > > For example, how safe
    > > xfs is if barriers are not supported or turned off?
    >
    > The last time we tried xfs with dm it didn't seem to notice -EOPNOTSUPP
    > everywhere it should => recovery may find corruption.

    Bug reports, please. What we don't know about, we can't fix.

    As of this commit:

    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0bfefc46dc028df60120acdb92062169c9328769

    XFS should be handling all cases of -EOPNOTSUPP for barrier
    I/Os. If you are still having problems, please let us know.

    Cheers,

    Dave.
    --
    Dave Chinner
    Principal Engineer
    SGI Australian Software Group


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