Re: [PATCH] fstests: btrfs/185 update for single device pseudo device-scan

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On 12/09/2023 02:32, Boris Burkov wrote:
On Thu, Sep 07, 2023 at 12:24:43AM +0800, Anand Jain wrote:
As we are obliterating the need for the device scan for the single device,
which will return success if the basic superblock verification passes,
even for the duplicate device of the mounted filesystem, drop the check
for the return code in this testcase and continue to verify if the device
path of the mounted filesystem remains unaltered after the scan.

Also, if the test fails, it leaves the local non-standard mount point
remained mounted, leading to further test cases failing. Call unmount
in _cleanup().

This was also affecting my setup, thanks for the fix!

Hmm, it shouldn't, unless commit d41f57d15a90 ("brfs: scan but don't
 register device on single device filesystem") is already in the kernel
 you are testing. Do you have the logs?




Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx>
---
  tests/btrfs/185 | 5 +++--
  1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tests/btrfs/185 b/tests/btrfs/185
index ba0200617e69..c7b8d2d46951 100755
--- a/tests/btrfs/185
+++ b/tests/btrfs/185
@@ -15,6 +15,7 @@ mnt=$TEST_DIR/$seq.mnt
  # Override the default cleanup function.
  _cleanup()
  {



+	$UMOUNT_PROG $mnt > /dev/null 2>&1

Do you mean to umount before calling rm -rf on it? That seems.. risky.

  	rm -rf $mnt > /dev/null 2>&1

mnt is a special mount point. Removing the special mnt directory after unmounting it is correct..


  	cd /
  	rm -f $tmp.*
@@ -51,9 +52,9 @@ for sb_bytenr in 65536 67108864; do
  	echo ..:$? >> $seqres.full
  done
-# Original device is mounted, scan of its clone should fail
+# Original device is mounted, scan of its clone must not alter the
+# filesystem device path
  $BTRFS_UTIL_PROG device scan $device_2 >> $seqres.full 2>&1
-[[ $? != 1 ]] && _fail "cloned device scan should fail"
[[ $(findmnt $mnt | grep -v TARGET | $AWK_PROG '{print $2}') != $device_1 ]] && \
  						_fail "mounted device changed"
--
2.39.3




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