[PATCH 2/2] fail_make_request: teach helpers about external devices

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

Teach the fail_make_request helpers about external log and realtime
devices so that we can use generic/019 on exotic XFS configurations.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
 common/fail_make_request |   28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)


diff --git a/common/fail_make_request b/common/fail_make_request
index 581d176a..9f8ea500 100644
--- a/common/fail_make_request
+++ b/common/fail_make_request
@@ -30,18 +30,34 @@ _disallow_fail_make_request()
     echo 0 > $DEBUGFS_MNT/fail_make_request/verbose
 }
 
+_bdev_fail_make_request()
+{
+    local bdev="$1"
+    local status="$2"
+    local sysfs_bdev=$(_sysfs_dev $bdev)
+
+    echo " echo $status > $sysfs_bdev/make-it-fail" >> $seqres.full
+    echo "$status" > $sysfs_bdev/make-it-fail
+}
+
 _start_fail_scratch_dev()
 {
-    local SYSFS_BDEV=`_sysfs_dev $SCRATCH_DEV`
     echo "Force SCRATCH_DEV device failure"
-    echo " echo 1 > $SYSFS_BDEV/make-it-fail" >> $seqres.full
-    echo 1 > $SYSFS_BDEV/make-it-fail
+
+    _bdev_fail_make_request $SCRATCH_DEV 1
+    [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_LOGDEV" ] && \
+        _bdev_fail_make_request $SCRATCH_LOGDEV 1
+    [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_RTDEV" ] && \
+        _bdev_fail_make_request $SCRATCH_RTDEV 1
 }
 
 _stop_fail_scratch_dev()
 {
-    local SYSFS_BDEV=`_sysfs_dev $SCRATCH_DEV`
     echo "Make SCRATCH_DEV device operable again"
-    echo " echo 0 > $SYSFS_BDEV/make-it-fail" >> $seqres.full
-    echo 0 > $SYSFS_BDEV/make-it-fail
+
+    [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_RTDEV" ] && \
+        _bdev_fail_make_request $SCRATCH_RTDEV 0
+    [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_LOGDEV" ] && \
+        _bdev_fail_make_request $SCRATCH_LOGDEV 0
+    _bdev_fail_make_request $SCRATCH_DEV 0
 }