common/xfs: refactor xfs_scrub presence testing
authorDarrick J. Wong <darrick.wong@oracle.com>
Fri, 27 Oct 2017 20:21:46 +0000 (13:21 -0700)
committerEryu Guan <eguan@redhat.com>
Fri, 3 Nov 2017 11:04:49 +0000 (19:04 +0800)
Move all the requirements checking for xfs_scrub into a helper function.
Make sure the helper properly detects the presence of the scrub ioctl
and situations where we can't run scrub (e.g. norecovery).

Refactor the existing three xfs_scrub call sites to use the helper to
check if it's appropriate to run scrub.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
README
common/rc
common/xfs
tests/generic/453
tests/generic/454

diff --git a/README b/README
index 4963d28..a9da4f0 100644 (file)
--- a/README
+++ b/README
@@ -88,9 +88,9 @@ Preparing system for tests:
                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.
+             - xfs_scrub, if present, will always check the test and scratch
+               filesystems if they are still online at the end of the test.
+               It is no longer necessary to set TEST_XFS_SCRUB.
              - setenv LOGWRITES_DEV to a block device to use for power fail
                testing.
 
index e2a8229..a2999a2 100644 (file)
--- a/common/rc
+++ b/common/rc
@@ -2077,7 +2077,7 @@ _require_xfs_io_command()
                        _notrun "xfs_io $command support is missing"
                ;;
        "scrub"|"repair")
-               testio=`$XFS_IO_PROG -x -c "$command test 0" $TEST_DIR 2>&1`
+               testio=`$XFS_IO_PROG -x -c "$command probe 0" $TEST_DIR 2>&1`
                echo $testio | grep -q "Inappropriate ioctl" && \
                        _notrun "xfs_io $command support is missing"
                ;;
index d4fef94..95dde60 100644 (file)
@@ -298,6 +298,30 @@ _require_xfs_db_command()
                _notrun "xfs_db $command support is missing"
 }
 
+# Does the filesystem mounted from a particular device support scrub?
+_supports_xfs_scrub()
+{
+       local mountpoint="$1"
+       local device="$2"
+
+       if [ ! -b "$device" ] || [ ! -e "$mountpoint" ]; then
+               echo "Usage: _supports_xfs_scrub mountpoint device"
+               exit 1
+       fi
+
+       test "$FSTYP" = "xfs" || return 1
+       test -x "$XFS_SCRUB_PROG" || return 1
+
+       # Probe for kernel support...
+       $XFS_IO_PROG -c 'help scrub' 2>&1 | grep -q 'types are:.*probe' || return 1
+       $XFS_IO_PROG -c "scrub probe 0" "$mountpoint" 2>&1 | grep -q "Inappropriate ioctl" && return 1
+
+       # Scrub can't run on norecovery mounts
+       _fs_options "$device" | grep -q "norecovery" && return 1
+
+       return 0
+}
+
 # run xfs_check and friends on a FS.
 _check_xfs_filesystem()
 {
@@ -330,14 +354,17 @@ _check_xfs_filesystem()
        type=`_fs_type $device`
        ok=1
 
-       if [ "$type" = "xfs" ]; then
-               if [ -n "$TEST_XFS_SCRUB" ] && [ -x "$XFS_SCRUB_PROG" ]; then
-                       "$XFS_SCRUB_PROG" $scrubflag -v -d -n $device >>$seqres.full
-                       if [ $? -ne 0 ]; then
-                               _log_err "filesystem on $device failed scrub"
-                               ok=0
-                       fi
+       # Run online scrub if we can.
+       mntpt="$(_is_mounted $device)"
+       if [ -n "$mntpt" ] && _supports_xfs_scrub "$mntpt" "$device"; then
+               "$XFS_SCRUB_PROG" $scrubflag -v -d -n $device >>$seqres.full 2>&1
+               if [ $? -ne 0 ]; then
+                       _log_err "filesystem on $device failed scrub"
+                       ok=0
                fi
+       fi
+
+       if [ "$type" = "xfs" ]; then
                # mounted ...
                mountpoint=`_umount_or_remount_ro $device`
        fi
index bda1112..fc07978 100755 (executable)
@@ -136,10 +136,8 @@ echo "Test XFS online scrub, if applicable"
 
 # Only run this on xfs if xfs_scrub is available and has the unicode checker
 check_xfs_scrub() {
-       # Ignore non-XFS fs or no scrub program...
-       if [ "${FSTYP}" != "xfs" ] || [ ! -x "${XFS_SCRUB_PROG}" ]; then
-               return 1
-       fi
+       [ "$FSTYP" == "xfs" ] || return 1
+       _supports_xfs_scrub "$SCRATCH_MNT" "$SCRATCH_DEV" || return 1
 
        # We only care if xfs_scrub has unicode string support...
        if ! type ldd > /dev/null 2>&1 || \
@@ -147,12 +145,6 @@ check_xfs_scrub() {
                return 1
        fi
 
-       # Does the ioctl work?
-       if $XFS_IO_PROG -x -c "scrub probe 0" $SCRATCH_MNT 2>&1 | \
-          grep -q "Inappropriate ioctl"; then
-               return 1
-       fi
-
        return 0
 }
 
index d1f93b2..7fa8ac5 100755 (executable)
@@ -132,10 +132,8 @@ echo "Test XFS online scrub, if applicable"
 
 # Only run this on xfs if xfs_scrub is available and has the unicode checker
 check_xfs_scrub() {
-       # Ignore non-XFS fs or no scrub program...
-       if [ "${FSTYP}" != "xfs" ] || [ ! -x "${XFS_SCRUB_PROG}" ]; then
-               return 1
-       fi
+       [ "$FSTYP" == "xfs" ] || return 1
+       _supports_xfs_scrub "$SCRATCH_MNT" "$SCRATCH_DEV" || return 1
 
        # We only care if xfs_scrub has unicode string support...
        if ! type ldd > /dev/null 2>&1 || \
@@ -143,12 +141,6 @@ check_xfs_scrub() {
                return 1
        fi
 
-       # Does the ioctl work?
-       if $XFS_IO_PROG -x -c "scrub probe 0" $SCRATCH_MNT 2>&1 | \
-          grep -q "Inappropriate ioctl"; then
-               return 1
-       fi
-
        return 0
 }