• NeilBrown's avatar
    md: Use REQ_FAILFAST_* on metadata writes where appropriate · 46533ff7
    NeilBrown authored
    This can only be supported on personalities which ensure
    that md_error() never causes an array to enter the 'failed'
    state.  i.e. if marking a device Faulty would cause some
    data to be inaccessible, the device is status is left as
    non-Faulty.  This is true for RAID1 and RAID10.
    
    If we get a failure writing metadata but the device doesn't
    fail, it must be the last device so we re-write without
    FAILFAST to improve chance of success.  We also flag the
    device as LastDev so that future metadata updates don't
    waste time on failfast writes.
    Signed-off-by: default avatarNeilBrown <neilb@suse.com>
    Signed-off-by: default avatarShaohua Li <shli@fb.com>
    46533ff7
raid1.c 88.1 KB