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xfstests: make defrag test 222 generic

PATCH In review Eric Sandeen 4 participants 5 messages Mar 12, 2013 – Mar 27, 2013 Btrfs file system

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#0 lore raw

PATCH 1/1 xfstests: make defrag test 222 generic

test 222 is just a stress test defragging the test device:

# xfs_fsr QA tests
# run xfs_fsr over the test filesystem to give it a wide and varied set of
# inodes to try to defragment. This is effectively a crash/assert failure
# test looking for corruption induced by xfs_fsr runs.

There's no reason we can't do the same for other filesystems.

Define a new _defrag_dir() helper which just runs noisy/debug dir defrag for ext4 and/or btrfs as well, and use that in 222 instead of hardcoded xfs_fsr.

Make 222 (and 218) generic; if no defrag is supported it just won't run.

Change the comments at the top while we're at it.

---

218 +1 -1
index 77782c6..e337bbf 100755
@@ -44,7 +44,7 @@ _cleanup()
 . ./common.defrag
 
 # real QA test starts here
-_supported_fs xfs ext4 btrfs
+_supported_fs generic
 _supported_os Linux
 
 _setup_testdir
222 +7 -6
index df2672f..dc4d621 100755
@@ -1,10 +1,10 @@
 #! /bin/bash
 # FS QA Test No. 222
 #
-# xfs_fsr QA tests
-# run xfs_fsr over the test filesystem to give it a wide and varied set of
+# defrag QA tests
+# run defrag over the test filesystem to give it a wide and varied set of
 # inodes to try to defragment. This is effectively a crash/assert failure
-# test looking for corruption induced by xfs_fsr runs.
+# test looking for corruption induced by defragmentation runs.
 #
 #-----------------------------------------------------------------------
 # Copyright (c) 2010 Dave Chinner.  All Rights Reserved.
@@ -44,14 +44,15 @@ trap "_cleanup ; exit \$status" 0 1 2 3 15
 # get standard environment, filters and checks
 . ./common.rc
 . ./common.filter
+. ./common.defrag
 
 # real QA test starts here
-_supported_fs xfs
+_supported_fs generic
 _supported_os Linux
 
-[ "$XFS_FSR_PROG" = "" ] && _notrun "xfs_fsr not found"
+_require_defrag
 
-xfs_fsr -d -v $TEST_DIR > $seq.full 2>&1
+_defrag_dir $TEST_DIR > $seq.full 2>&1
 
 echo "--- silence is golden ---"
 status=0 ; exit
common.defrag +16 -0
index 9c9eb9b..7736330 100644
@@ -69,3 +69,19 @@ _defrag()
 	rm -f $1
 }
 
+# Defrag a whole directory.  No checking as above, just run it, noisily
+# output should be sent to $seq.full since it's very fs-specific
+_defrag_dir()
+{
+    case "$FSTYP" in
+    xfs)
+	$DEFRAG_PROG -d -v $1
+	;;
+    ext4|ext4dev|btrfs)
+	$DEFRAG_PROG -v $1
+	;;
+    *)
+	$DEFRAG_PROG $1
+	;;
+    esac
+}
#1 lore raw
Quoted 3 lines · Eric Sandeen

Define a new _defrag_dir() helper which just runs noisy/debug dir defrag for ext4 and/or btrfs as well, and use that in 222 instead of hardcoded xfs_fsr.

Dir defrag on btrfs does not recurse in the given directory to defrag all files, but defragments the tree of the containing subvolume and the whole extent tree (thus needs CAP_SYS_ADMIN).

This is known (and not very intuitive) behaviour, it would be better to add a special parameter to defrag the root and/or the extent root and pass it down to the ioctl via flags.

Until this is implemented I suggest to use a workaround via 'find':

find $dir -print -execdir $DEFRAG_PROG '{}' +

Otherwise the test looks ok.

david

common.defrag _defrag() · line 80

Quoted 9 lines
common.defrag +9 -0
+# Defrag a whole directory.  No checking as above, just run it, noisily
+# output should be sent to $seq.full since it's very fs-specific
+_defrag_dir()
+{
+    case "$FSTYP" in
+    xfs)
+	$DEFRAG_PROG -d -v $1
+	;;
+    ext4|ext4dev|btrfs)
       ext4|ext4dev)

Review

Quoted 2 lines
(quoted diff) +2 -0
+	$DEFRAG_PROG -v $1
+	;;
       btrfs)
        find $1 -print -execdir $DEFRAG_PROG '{}' +
        ;;
Quoted 5 lines
common.defrag +5 -0
+    *)
+	$DEFRAG_PROG $1
+	;;
+    esac
+}
#2 lore raw
Quoted 13 lines · David Sterba
Quoted 3 lines · Eric Sandeen

Define a new _defrag_dir() helper which just runs noisy/debug dir defrag for ext4 and/or btrfs as well, and use that in 222 instead of hardcoded xfs_fsr.

Dir defrag on btrfs does not recurse in the given directory to defrag all files, but defragments the tree of the containing subvolume and the whole extent tree (thus needs CAP_SYS_ADMIN).

This is known (and not very intuitive) behaviour, it would be better to add a special parameter to defrag the root and/or the extent root and pass it down to the ioctl via flags.

Quoted 7 lines

Until this is implemented I suggest to use a workaround via 'find':

find $dir -print -execdir $DEFRAG_PROG '{}' +

Otherwise the test looks ok.

david

Eric, I will make this change at commit time if you agree?

David, can I put your name as the reviewer when I do?

Thanks
--Rich

#3 lore raw
Quoted 18 lines · Rich Johnston
Quoted 17 lines · David Sterba
Quoted 3 lines · Eric Sandeen

Define a new _defrag_dir() helper which just runs noisy/debug dir defrag for ext4 and/or btrfs as well, and use that in 222 instead of hardcoded xfs_fsr.

Dir defrag on btrfs does not recurse in the given directory to defrag all files, but defragments the tree of the containing subvolume and the whole extent tree (thus needs CAP_SYS_ADMIN).

This is known (and not very intuitive) behaviour, it would be better to add a special parameter to defrag the root and/or the extent root and pass it down to the ioctl via flags.

Until this is implemented I suggest to use a workaround via 'find':

find $dir -print -execdir $DEFRAG_PROG '{}' +

Quoted 7 lines
Quoted 3 lines

Otherwise the test looks ok.

david

Eric, I will make this change at commit time if you agree?

David, can I put your name as the reviewer when I do?

I think that's big enough change I should send a V2. and make a btrfs-special case in _defrag_dir.

-Eric

Quoted 8 lines

Thanks
--Rich

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