From: Darrick J. Wong <djwong@kernel.org>
Date: Mon, 2 Feb 2026 19:11:44 +0000 (-0800)
Subject: generic/749: don't write a ton of _mread output to seqres.full
X-Git-Tag: v2026.02.26~6
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=d290a3c1b673bdb9904681c06364f678702bcd9c;p=xfstests-dev.git

generic/749: don't write a ton of _mread output to seqres.full

Something went wrong with this test when testing with fuse4fs, but I
couldn't tell what because this test writes so much data to seqres.full
that it completely filled the log partition.  Most of that output was
from checks that actually succeeded, so let's reduce the amount of
logging from _mread (which passes -v) by writing to a tempfile and only
dumping the output to the .full file if something breaks.

Cc: fstests@vger.kernel.org # v2024.06.27
Fixes: e4a6b119e52295 ("fstests: add mmap page boundary tests")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zorro Lang <zlang@kernel.org>
---

diff --git a/tests/generic/749 b/tests/generic/749
index 7af019dd..01e3eac0 100755
--- a/tests/generic/749
+++ b/tests/generic/749
@@ -163,17 +163,20 @@ do_mmap_tests()
 	new_filelen=$(_get_filesize $test_file)
 	map_len=$(_round_up_to_page_boundary $new_filelen)
 	csum_orig="$(_md5_checksum $test_file)"
-	_mread $test_file 0 $map_len >> $seqres.full  2>$tmp.err
+	_mread $test_file 0 $map_len > $tmp.out 2>$tmp.err
 	if grep -q 'Bus error' $tmp.err; then
 		failed=1
+		cat $tmp.out >> $seqres.full
 		cat $tmp.err
 		echo "Not expecting SIGBUS when reading up to page boundary"
 	fi
 
 	# This should just work
-	_mread $test_file 0 $map_len >> $seqres.full  2>$tmp.err
+	_mread $test_file 0 $map_len > $tmp.out 2>$tmp.err
 	if [[ $? -ne 0 ]]; then
 		let failed=$failed+1
+		cat $tmp.out >> $seqres.full
+		cat $tmp.err
 		echo "mmap() read up to page boundary should work"
 	fi
 
@@ -205,9 +208,11 @@ do_mmap_tests()
 	fi
 
 	# Now let's go beyond the allowed mmap() page boundary
-	_mread $test_file 0 $((map_len + 10)) $((map_len + 10)) >> $seqres.full  2>$tmp.err
+	_mread $test_file 0 $((map_len + 10)) $((map_len + 10)) > $tmp.out 2>$tmp.err
 	if ! grep -q 'Bus error' $tmp.err; then
 		let failed=$failed+1
+		cat $tmp.out >> $seqres.full
+		cat $tmp.err
 		echo "Expected SIGBUS when mmap() reading beyond page boundary"
 	fi