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xfstests: avoid ext4/306 failures caused by incompatible mount options

PATCH In review Eric Whitney 2 participants 4 messages Jan 31, 2014

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#0 lore raw

PATCH v2 1/1 xfstests: avoid ext4/306 failures caused by incompatible mount options

ext4/306 will fail when mounting the ext3 file system it creates if an ext3-incompatible mount option is applied by _scratch_mount. This can happen if EXT_MOUNT_OPTIONS is defined appropriately in the test environment. For example, the block_validity option is commonly used to enhance ext4 testing, and it is not supported by ext3.

Fix this by instead creating an ext4 file system without extents as a functionally equivalent substitute. This will also eliminate a dependency for ext3 support on the test system.

---
 tests/ext4/306 | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)
tests/ext4/306 +6 -9
index 398c4c0..9559cf2 100755
@@ -45,29 +45,22 @@ _supported_os Linux
 
 _require_scratch
 
-# This needs to mount ext3; might require ext3 driver, or ext4
-# might handle it itself.  Find out if we have it one way or another.
-modprobe ext3 > /dev/null 2>&1
-grep -q ext3 /proc/filesystems || _notrun "This test requires ext3 support"
-
 rm -f $seqres.full
 
-# Make a small ext3 fs, (extents disabled) & mount it
-yes | mkfs.ext3 $SCRATCH_DEV 512m >> $seqres.full 2>&1
-_scratch_mount -t ext3 || _fail "couldn't mount fs as ext3"
+# Make a small ext4 fs with extents disabled & mount it
+yes | mkfs.ext4 -O ^extents $SCRATCH_DEV 512m >> $seqres.full 2>&1
+_scratch_mount || _fail "couldn't mount fs"
+
 # Create a small non-extent-based file
 echo "Create 1m testfile1"
 $XFS_IO_PROG -f $SCRATCH_MNT/testfile1 -c "pwrite 0 1m" | _filter_xfs_io
+
+# Create a large non-extent-based file filling the fs; this will run out & fail
 echo "Create testfile2 to fill the fs"
-# A large non-extent-based file filling the fs; this will run out & fail
 $XFS_IO_PROG -f $SCRATCH_MNT/testfile2 -c "pwrite 0 512m" | _filter_xfs_io
#1 lore raw
Quoted 9 lines · Eric Whitney

ext4/306 will fail when mounting the ext3 file system it creates if an ext3-incompatible mount option is applied by _scratch_mount. This can happen if EXT_MOUNT_OPTIONS is defined appropriately in the test environment. For example, the block_validity option is commonly used to enhance ext4 testing, and it is not supported by ext3.

Fix this by instead creating an ext4 file system without extents as a functionally equivalent substitute. This will also eliminate a dependency for ext3 support on the test system.

this seems like it should be fine, but a quick check[1] makes me think that it's passing when it should not. My flexible test boxes are tied up right now; the fix hit v3.10 (dunno about stable) so we should make sure this fails on v3.9 before & after your, I guess.

I can try to get to it, or if you do first, let me now :)

-Eric

[1] on an old RHEL5 box so that's a bit of a strange beast

Quoted 47 lines
---
 tests/ext4/306 | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)
tests/ext4/306 +7 -14
index 398c4c0..9559cf2 100755
@@ -45,29 +45,22 @@ _supported_os Linux
 
 _require_scratch
 
-# This needs to mount ext3; might require ext3 driver, or ext4
-# might handle it itself.  Find out if we have it one way or another.
-modprobe ext3 > /dev/null 2>&1
-grep -q ext3 /proc/filesystems || _notrun "This test requires ext3 support"
-
 rm -f $seqres.full
 
-# Make a small ext3 fs, (extents disabled) & mount it
-yes | mkfs.ext3 $SCRATCH_DEV 512m >> $seqres.full 2>&1
-_scratch_mount -t ext3 || _fail "couldn't mount fs as ext3"
+# Make a small ext4 fs with extents disabled & mount it
+yes | mkfs.ext4 -O ^extents $SCRATCH_DEV 512m >> $seqres.full 2>&1
+_scratch_mount || _fail "couldn't mount fs"
+
 # Create a small non-extent-based file
 echo "Create 1m testfile1"
 $XFS_IO_PROG -f $SCRATCH_MNT/testfile1 -c "pwrite 0 1m" | _filter_xfs_io
+
+# Create a large non-extent-based file filling the fs; this will run out & fail
 echo "Create testfile2 to fill the fs"
-# A large non-extent-based file filling the fs; this will run out & fail
 $XFS_IO_PROG -f $SCRATCH_MNT/testfile2 -c "pwrite 0 512m" | _filter_xfs_io
-
-# Remount as ext4
-_scratch_unmount
-_scratch_mount -t ext4 || _fail "couldn't remount fs as ext4"
 df -h $SCRATCH_MNT >> $seqres.full
 
-# Grow it by 512m
+# Grow fs by 512m
 echo "Resize to 1g"
 resize2fs $SCRATCH_DEV 1g >> $seqres.full 2>&1 || _fail "Could not resize to 1g"
 df -h $SCRATCH_MNT >> $seqres.full
#2 lore raw

* Eric Sandeen <[email protected]>:

Quoted 11 lines · Eric Whitney
Quoted 9 lines

ext4/306 will fail when mounting the ext3 file system it creates if an ext3-incompatible mount option is applied by _scratch_mount. This can happen if EXT_MOUNT_OPTIONS is defined appropriately in the test environment. For example, the block_validity option is commonly used to enhance ext4 testing, and it is not supported by ext3.

Fix this by instead creating an ext4 file system without extents as a functionally equivalent substitute. This will also eliminate a dependency for ext3 support on the test system.

Quoted 7 lines

this seems like it should be fine, but a quick check[1] makes me think that it's passing when it should not. My flexible test boxes are tied up right now; the fix hit v3.10 (dunno about stable) so we should make sure this fails on v3.9 before & after your, I guess.

I can try to get to it, or if you do first, let me now :)

It's good thing I archive all my ext4 testing kernels. :-)

On 3.9, I find that the current version of ext4/306 and my patched version yield the same failure - each test hangs uninterruptably in the umount. Is that what you were expecting? Stack backtraces for the patched version follow, and closely resemble those seen for the current version.

Thanks,
Eric

SysRq : Show Blocked State
task PC stack pid father
flush-253:32 D ffff88002b109a28 0 4992 2 0x00000000
ffff88002b1099d8 0000000000000046 ffff880036433f60 ffff88002b109fd8 ffff88002b109fd8 ffff88002b109fd8 ffff88003b490000 ffff880036433f60 ffff88002b1099e8 ffff88002b109c60 ffff88002b109b10 0007ffffffffffff

Call Trace:
 [<ffffffff81246950>] ? write_cache_pages_da+0x3b0/0x520
 [<ffffffff816ffc09>] ? schedule+0x29/0x70
 [<ffffffff8129dda5>] ? jbd2_log_wait_commit+0xb5/0x130
 [<ffffffff81080ec0>] ? __init_waitqueue_head+0x60/0x60
 [<ffffffff812a10ea>] ? jbd2_journal_force_commit_nested+0x6a/0xd0
 [<ffffffff81246f2c>] ? ext4_da_writepages+0x46c/0x5e0
 [<ffffffff8114a2c1>] ? do_writepages+0x21/0x50
 [<ffffffff811c79a0>] ? __writeback_single_inode+0x40/0x220
 [<ffffffff81373a6d>] ? do_raw_spin_unlock+0x5d/0xb0
 [<ffffffff811c8e21>] ? writeback_sb_inodes+0x281/0x420
 [<ffffffff811c9180>] ? wb_writeback+0xf0/0x2c0
 [<ffffffff811ca6ea>] ? wb_do_writeback+0xba/0x210
 [<ffffffff810bed8d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff8106b6ac>] ? del_timer+0x5c/0x70
 [<ffffffff811ca8d3>] ? bdi_writeback_thread+0x93/0x230
 [<ffffffff811ca840>] ? wb_do_writeback+0x210/0x210
 [<ffffffff8108083a>] ? kthread+0xea/0xf0
 [<ffffffff81080750>] ? kthread_create_on_node+0x160/0x160
 [<ffffffff8170a06c>] ? ret_from_fork+0x7c/0xb0
 [<ffffffff81080750>] ? kthread_create_on_node+0x160/0x160

jbd2/vdc-8 D ffff88003ce59bd0 0 5251 2 0x00000000
ffff88003ce59b28 0000000000000046 ffff88003b490000 ffff88003ce59fd8 ffff88003ce59fd8 ffff88003ce59fd8 ffffffff81c13440 ffffffff810b9aed ffff88003ce59b28 ffffffff817012c7 ffff880036433f60 ffff8800364345a0

Call Trace:
 [<ffffffff81373a6d>] ? do_raw_spin_unlock+0x5d/0xb0
 [<ffffffff810b9aed>] ? trace_hardirqs_off+0xd/0x10
 [<ffffffff817012c7>] ? _raw_spin_unlock_irqrestore+0x67/0x80
 [<ffffffff813395b9>] ? submit_bio+0x79/0x160
 [<ffffffff810921bf>] ? try_to_wake_up+0x1ff/0x350
 [<ffffffff811034a4>] ? __delayacct_blkio_end+0x34/0x60
 [<ffffffff816ffcdf>] ? io_schedule+0x8f/0xd0
 [<ffffffff811d00fe>] ? sleep_on_buffer+0xe/0x20
 [<ffffffff816fcfb0>] ? __wait_on_bit+0x60/0x90
 [<ffffffff810986fe>] ? dequeue_entity+0x13e/0x4b0
 [<ffffffff8170129f>] ? _raw_spin_unlock_irqrestore+0x3f/0x80
 [<ffffffff810bed8d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff816ffc09>] schedule+0x29/0x70
 [<ffffffff8129f068>] ? kjournald2+0xc8/0x260
 [<ffffffff81080ec0>] ? __init_waitqueue_head+0x60/0x60
 [<ffffffff8129efa0>] ? journal_init_common+0x1d0/0x1d0
 [<ffffffff8108083a>] ? kthread+0xea/0xf0
 [<ffffffff81080750>] ? kthread_create_on_node+0x160/0x160
 [<ffffffff8170a06c>] ? ret_from_fork+0x7c/0xb0
 [<ffffffff81080750>] ? kthread_create_on_node+0x160/0x160

umount D 000000000000353a 0 5271 5053 0x00000000
ffff88003ced3b88 0000000000000046 ffff88003a953f60 ffff88003ced3fd8 ffff88003ced3fd8 ffff88003ced3fd8 ffffffff81c13440 ffff88003a953f60 0000000000000002 ffff88003ced3d10 ffff88003ced3d18 7fffffffffffffff

Call Trace:
 [<ffffffff816ffc09>] schedule+0x29/0x70
 [<ffffffff816fccdc>] schedule_timeout+0x18c/0x250
 [<ffffffff810beb7b>] ? mark_held_locks+0x9b/0x100
 [<ffffffff81701250>] ? _raw_spin_unlock_irq+0x30/0x40
 [<ffffffff810beced>] ? trace_hardirqs_on_caller+0x10d/0x1a0
 [<ffffffff816ff27f>] wait_for_completion+0x9f/0x110
 [<ffffffff81092310>] ? try_to_wake_up+0x350/0x350
 [<ffffffff811c81d4>] writeback_inodes_sb_nr+0x134/0x180
 [<ffffffff811c824e>] writeback_inodes_sb+0x2e/0x40
 [<ffffffff811ce51d>] sync_filesystem+0x3d/0xb0
 [<ffffffff8119f14b>] generic_shutdown_super+0x3b/0xf0
 [<ffffffff8119f230>] kill_block_super+0x30/0x80
 [<ffffffff8119f757>] deactivate_locked_super+0x57/0x80
 [<ffffffff811a039e>] deactivate_super+0x4e/0x70
 [<ffffffff811bc801>] mntput_no_expire+0x101/0x160
 [<ffffffff811bd73c>] sys_umount+0x9c/0x3c0
 [<ffffffff8170a119>] system_call_fastpath+0x16/0x1b
Quoted 52 lines

-Eric

[1] on an old RHEL5 box so that's a bit of a strange beast

Quoted 47 lines
---
 tests/ext4/306 | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)
tests/ext4/306 +7 -14
index 398c4c0..9559cf2 100755
@@ -45,29 +45,22 @@ _supported_os Linux
 
 _require_scratch
 
-# This needs to mount ext3; might require ext3 driver, or ext4
-# might handle it itself.  Find out if we have it one way or another.
-modprobe ext3 > /dev/null 2>&1
-grep -q ext3 /proc/filesystems || _notrun "This test requires ext3 support"
-
 rm -f $seqres.full
 
-# Make a small ext3 fs, (extents disabled) & mount it
-yes | mkfs.ext3 $SCRATCH_DEV 512m >> $seqres.full 2>&1
-_scratch_mount -t ext3 || _fail "couldn't mount fs as ext3"
+# Make a small ext4 fs with extents disabled & mount it
+yes | mkfs.ext4 -O ^extents $SCRATCH_DEV 512m >> $seqres.full 2>&1
+_scratch_mount || _fail "couldn't mount fs"
+
 # Create a small non-extent-based file
 echo "Create 1m testfile1"
 $XFS_IO_PROG -f $SCRATCH_MNT/testfile1 -c "pwrite 0 1m" | _filter_xfs_io
+
+# Create a large non-extent-based file filling the fs; this will run out & fail
 echo "Create testfile2 to fill the fs"
-# A large non-extent-based file filling the fs; this will run out & fail
 $XFS_IO_PROG -f $SCRATCH_MNT/testfile2 -c "pwrite 0 512m" | _filter_xfs_io
-
-# Remount as ext4
-_scratch_unmount
-_scratch_mount -t ext4 || _fail "couldn't remount fs as ext4"
 df -h $SCRATCH_MNT >> $seqres.full
 
-# Grow it by 512m
+# Grow fs by 512m
 echo "Resize to 1g"
 resize2fs $SCRATCH_DEV 1g >> $seqres.full 2>&1 || _fail "Could not resize to 1g"
 df -h $SCRATCH_MNT >> $seqres.full
Reviewed-by on v2 1/1
#3 lore raw
In reply to Eric Whitney
Quoted 11 lines · Eric Whitney

ext4/306 will fail when mounting the ext3 file system it creates if an ext3-incompatible mount option is applied by _scratch_mount. This can happen if EXT_MOUNT_OPTIONS is defined appropriately in the test environment. For example, the block_validity option is commonly used to enhance ext4 testing, and it is not supported by ext3.

Fix this by instead creating an ext4 file system without extents as a functionally equivalent substitute. This will also eliminate a dependency for ext3 support on the test system.

Looks good, thanks for double checking the old kernel.

Quoted 36 lines
---
 tests/ext4/306 | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)
tests/ext4/306 +6 -10
index 398c4c0..9559cf2 100755
@@ -45,29 +45,22 @@ _supported_os Linux
 
 _require_scratch
 
-# This needs to mount ext3; might require ext3 driver, or ext4
-# might handle it itself.  Find out if we have it one way or another.
-modprobe ext3 > /dev/null 2>&1
-grep -q ext3 /proc/filesystems || _notrun "This test requires ext3 support"
-
 rm -f $seqres.full
 
-# Make a small ext3 fs, (extents disabled) & mount it
-yes | mkfs.ext3 $SCRATCH_DEV 512m >> $seqres.full 2>&1
-_scratch_mount -t ext3 || _fail "couldn't mount fs as ext3"
+# Make a small ext4 fs with extents disabled & mount it
+yes | mkfs.ext4 -O ^extents $SCRATCH_DEV 512m >> $seqres.full 2>&1
+_scratch_mount || _fail "couldn't mount fs"
+
 # Create a small non-extent-based file
 echo "Create 1m testfile1"
 $XFS_IO_PROG -f $SCRATCH_MNT/testfile1 -c "pwrite 0 1m" | _filter_xfs_io
+
+# Create a large non-extent-based file filling the fs; this will run out & fail
 echo "Create testfile2 to fill the fs"
-# A large non-extent-based file filling the fs; this will run out & fail
 $XFS_IO_PROG -f $SCRATCH_MNT/testfile2 -c "pwrite 0 512m" | _filter_xfs_io
-

tests/ext4/306 _supported_os Linux · line 66

Quoted 10 lines
tests/ext4/306 +1 -4
-# Remount as ext4
-_scratch_unmount
-_scratch_mount -t ext4 || _fail "couldn't remount fs as ext4"
 df -h $SCRATCH_MNT >> $seqres.full
 
-# Grow it by 512m
+# Grow fs by 512m
 echo "Resize to 1g"
 resize2fs $SCRATCH_DEV 1g >> $seqres.full 2>&1 || _fail "Could not resize to 1g"
 df -h $SCRATCH_MNT >> $seqres.full

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