[LU-5248] Test failure on sanity-lfsck.sh, subtest test_4: ls: reading directory /mnt/lustre/d4.sanity-lfsck: Input/output error

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.5.4
• Affects Version/s: Lustre 2.5.1, Lustre 2.4.3
• Severity: 3
• Assignee: Emoly Liu
• Reporter: Emoly Liu

Description

I found this issue during backporting http://review.whamcloud.com/#/c/9704 to b2_5. sanity-lfsck.sh test_5 always complained the test_4 environment was insane.

This issue is easy to reproduce by the following debug patch:

diff --git a/lustre/tests/sanity-lfsck.sh b/lustre/tests/sanity-lfsck.sh
index 4d203d6..f8765c0 100644
--- a/lustre/tests/sanity-lfsck.sh
+++ b/lustre/tests/sanity-lfsck.sh
@@ -386,7 +386,11 @@ test_4()
 
        #define OBD_FAIL_FID_LOOKUP     0x1505
        do_facet $SINGLEMDS $LCTL set_param fail_loc=0x1505
-       ls $DIR/$tdir/ > /dev/null || error "(11) no FID-in-dirent."
+       #ls $DIR/$tdir > /dev/null || error "(11) no FID-in-dirent."
+       ls -al $DIR/$tdir
+       echo "rc=${PIPESTATUS[0]}"
+       ls -al $DIR/$tdir
+       echo "rc=${PIPESTATUS[0]}"
 
        do_facet $SINGLEMDS $LCTL set_param fail_loc=0
 }

The output is like

fail_loc=0x1505
total 0
rc=0
ls: reading directory /mnt/lustre/d4.sanity-lfsck: Input/output error
total 0
rc=2

dmesg log:

Lustre: *** cfs_fail_loc=1505, val=0***
Lustre: 14962:0:(mdd_object.c:1955:mdd_dir_page_build()) build page failed: -2!
LustreError: 15167:0:(dir.c:422:ll_get_dir_page()) read cache page: [0x200000400:0x1:0x0] at 0: rc -2
LustreError: 15167:0:(dir.c:584:ll_dir_read()) error reading dir [0x200000400:0x1:0x0] at 0: rc -2
LustreError: 15170:0:(dir.c:398:ll_get_dir_page()) dir page locate: [0x200000400:0x1:0x0] at 0: rc -5

Issue Links

• duplicates: LU-5112 Interop 2.5 server with higher version client failure on test suite sanity-lfsck test_5: Fail to cleanup the env
• is blocking: LU-5241 2.4.3<->2.5.2 interop: sanity-lfsck test_0: FAIL: (9) Expect 'completed', but got 'scanning-phase1'