Re: [PATCH v1 1/3] xfs/539: Skip noattr2 remount option on v5 filesystems

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On 2/13/25 02:31, Dave Chinner wrote:
On Wed, Feb 12, 2025 at 12:39:56PM +0000, Nirjhar Roy (IBM) wrote:
This test is to verify that repeated warnings are not printed
for default options (attr2, noikeep) and warnings are
printed for non default options (noattr2, ikeep). Remount
with noattr2 fails on a v5 filesystem, so skip the mount option.
Why do we care if remount succeeds or fails? That's not what the
test is exercising.

i.e. We are testing to see if the appropriate deprecation warning
for a deprecated mount option has been issued or not, and that
should happen regardless of whether the mount option is valid or not
for the given filesysetm format....

Hence I don't see any reason for changing the test to exclude
noattr2 testing on v5 filesystems...

Yes, this makes sense. The test indeed just checks for the dmesg warnings, and they appear even if the remount fails. I wrote the patch because xfs/539 has started failing in one of our fstests CI runs because RHEL 10 has started disabling xfs v4 support i.e, CONFIG_XFS_SUPPORT_V4=n. Do you think modifying this patch in such a way that the test ignores the remount failures with noattr2 and continues the test is an appropriate idea (since the test xfs/539 only intends to check the dmesg warnings)? So something like:,

--- a/tests/xfs/539
+++ b/tests/xfs/539
@@ -61,7 +61,11 @@ for VAR in {attr2,noikeep}; do
 done
 for VAR in {noattr2,ikeep}; do
     log_tag
-    _scratch_remount $VAR
+    _scratch_remount $VAR >> $seqres.full 2>&1
+    if [[ "$VAR" == "noattr2" && "$?" != "0" ]]; then
+        echo "remount will fail in v5 filesystem but the warning should be printed" \
+            >> $seqres.full
+    fi
     check_dmesg_for_since_tag "XFS: $VAR mount option is deprecated" || \
         echo "Could not find deprecation warning for $VAR"

I also suggested something similar in one of my previous replies[1] in this patch series. Can you please let me know your thoughts on this?

[1] https://lore.kernel.org/all/90be3350-67e5-4dec-bc65-442762f5f856@xxxxxxxxx/

--NR


-Dave.

--
Nirjhar Roy
Linux Kernel Developer
IBM, Bangalore





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