[PATCH 15/17] xfs: scrub fs (if still mounted) at the end of the test

["Darrick J. Wong" <darrick.wong@oracle.com>]

Teach _check_xfs_filesystem to scrub mounted filesystems before
unmounting and fscking them.  This is mostly to test the online
scrub tool...

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 README        |    3 +++
 common/config |    1 +
 common/rc     |    7 +++++++
 3 files changed, 11 insertions(+)


diff --git a/README b/README
index 4509cc1..c19fcb1 100644
--- a/README
+++ b/README
@@ -84,6 +84,9 @@ Preparing system for tests (IRIX and Linux):
                run xfs_repair -n to check the filesystem; xfs_repair to rebuild
                metadata indexes; and xfs_repair -n (a third time) to check the
                results of the rebuilding.
+	     - set TEST_XFS_SCRUB=1 to have _check_xfs_filesystem run
+	       xfs_scrub -vd to scrub the filesystem metadata online before
+               unmounting to run the offline check.
 
         - or add a case to the switch in common/config assigning
           these variables based on the hostname of your test
diff --git a/common/config b/common/config
index 08d5d80..168f46c 100644
--- a/common/config
+++ b/common/config
@@ -163,6 +163,7 @@ export XFS_REPAIR_PROG="`set_prog_path xfs_repair`"
 export XFS_DB_PROG="`set_prog_path xfs_db`"
 export XFS_GROWFS_PROG=`set_prog_path xfs_growfs`
 export XFS_IO_PROG="`set_prog_path xfs_io`"
+export XFS_SCRUB_PROG="`set_prog_path xfs_scrub`"
 export XFS_PARALLEL_REPAIR_PROG="`set_prog_path xfs_prepair`"
 export XFS_PARALLEL_REPAIR64_PROG="`set_prog_path xfs_prepair64`"
 export __XFSDUMP_PROG="`set_prog_path xfsdump`"
diff --git a/common/rc b/common/rc
index 3b45578..861a721 100644
--- a/common/rc
+++ b/common/rc
@@ -2391,6 +2391,13 @@ _check_xfs_filesystem()
 
     if [ "$type" = "xfs" ]
     then
+        if [ -n "$TEST_XFS_SCRUB" ] && [ -x "$XFS_SCRUB_PROG" ]; then
+            "$XFS_SCRUB_PROG" $scrubflag -vd $device >>$seqres.full
+            if [ $? -ne 0 ]; then
+                echo "filesystem on $device failed scrub (see $seqres.full)"
+                ok=0
+            fi
+        fi
         # mounted ...
         mountpoint=`_umount_or_remount_ro $device`
     fi