Re: [PATCH] xfs/010: Accept the inconsistencies of sparse records

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On 2019/03/23 16:50, Eryu Guan wrote:
On Tue, Mar 19, 2019 at 03:28:53PM +0800, Xiao Yang wrote:
If sparse inode is enabled, running xfs/010 gets the following error:
-----------------------------------------------------
+invalid inode count, AGNO/INO, count 0 ninodes 64
  finobt record with no free inodes, AGNO/INO
+invalid inode count, AGNO/INO, count 0 ninodes 64
-----------------------------------------------------

We corrupt finobt records forcely, so it's reasonable for repair
to detect the inconsistencies of sparse records if sparse inode
is enabled.

Signed-off-by: Xiao Yang<yangx.jy@xxxxxxxxxxxxxx>
I cannot reproduce this failure, I'm using xfsprogs from upstream
for-next branch and kernel 5.0.

xfs/010 uses a fixed mkfs option to create the target fs:

_scratch_mkfs_xfs "-m crc=1,finobt=1 -d agcount=2" | _filter_mkfs 2>$seqres.full

So adding "-i sparse" to MKFS_OPTIONS won't create xfs with 'sparse'
enabled in test. And even after editing above mkfs options manually in
test, I still couldn't hit the failure. Did I miss anything?
Hi Eryu,

Sorry, this is a xfsprogs bug instead of test problem. :-[
I have confirmed that the xfsprogs bug has been fixed by the followoing patch:
'38c599e xfs_db: fix finobt record decoding when sparse inodes enabled'

Best Regards,
Xiao Yang
Thanks,
Eryu

---
  tests/xfs/010 | 6 ++++--
  1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tests/xfs/010 b/tests/xfs/010
index e220a65..69c019b 100755
--- a/tests/xfs/010
+++ b/tests/xfs/010
@@ -106,8 +106,10 @@ _scratch_unmount
  # corrupt some finobt records
  _corrupt_finobt_records $SCRATCH_DEV

-# repair should detect the inconsistencies
-_scratch_xfs_repair 2>&1 | _filter_repair
+# repair should detect the inconsistencies of finobt records
+# repair can also detect the inconsistencies of sparse records if
+# sparse inode is enabled, so accept both of outputs by filtering it.
+_scratch_xfs_repair 2>&1 | _filter_repair | sed -e '/invalid inode count, AGNO\/INO/d'
  _check_scratch_fs

  # nuke the finobt root, repair will have to regenerate from the inobt
--
1.8.3.1











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