On 10/21/13 11:13 AM, Josef Bacik wrote:
> I've been periodically failing btrfs/003 because my box sometimes takes a little
> longer to unregister the device when we remove it and so the output from btrfs
> dev show doesn't match what we are wanting since it still sees the device. To
> fix this just stat and sleep if we still see the device node and only continue
> once udev or whatever actually removes the device node so that we don't get
> random failures. Thanks,
>
> Signed-off-by: Josef Bacik <jbacik@xxxxxxxxxxxx>
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>
> ---
> V2->V3: actually use the lun local variable.
>
> common/rc | 11 ++++++++++-
> tests/btrfs/003 | 2 +-
> 2 files changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/common/rc b/common/rc
> index b253948..b5eb582 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -2093,7 +2093,16 @@ _require_freeze()
> # ls -l /sys/class/block/sdd | rev | cut -d "/" -f 3 | rev
> _devmgt_remove()
> {
> - echo 1 > /sys/class/scsi_device/${1}/device/delete || _fail "Remove disk failed"
> + local lun=$1
> + local disk=$2
> +
> + echo 1 > /sys/class/scsi_device/${lun}/device/delete || _fail "Remove disk failed"
> +
> + stat $disk > /dev/null 2>&1
> + while [ $? -eq 0 ]; do
> + sleep 1
> + stat $disk > /dev/null 2>&1
> + done
> }
>
> # arg 1 is dev to add and is output of the below eg.
> diff --git a/tests/btrfs/003 b/tests/btrfs/003
> index 262b1d5..15c2cc7 100755
> --- a/tests/btrfs/003
> +++ b/tests/btrfs/003
> @@ -142,7 +142,7 @@ _test_replace()
> DEVHTL=`ls -l /sys/class/block/${d} | rev | cut -d "/" -f 3 | rev`
>
> #fail disk
> - _devmgt_remove ${DEVHTL}
> + _devmgt_remove ${DEVHTL} $ds
> dev_removed=1
>
> $BTRFS_UTIL_PROG fi show $SCRATCH_DEV | grep "Some devices missing" >> $seqres.full || _fail \
>
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