LU-15934 tests: add a test case for update llog

A test case to simulate the update llog corruption
situation. It replaces the catalog file with a
random data. The recovery of mdt will be blocked
if without the fixing patch.

Fixes: 814691bcff ("LU-15934 lod: renew the update llog")
Signed-off-by: Yang Sheng <ys@whamcloud.com>
Change-Id: I0ade8d0ff33ddc06b622e5e67cf4b4775dfff129
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/51208
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/tests/recovery-small.sh b/lustre/tests/recovery-small.sh
index 1e1c938..541b2c1 100755 (executable)
--- a/lustre/tests/recovery-small.sh
+++ b/lustre/tests/recovery-small.sh
@@ -3448,6 +3448,38 @@ test_153() {
 }
 run_test 153 "evict vs reconnect race"
 
+test_154() {
+       [ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs"
+
+       stop mds2
+
+       local mnt=$(facet_mntpt mds2)
+
+       mount_fstype mds2
+       local ula=($(do_facet mds2 od -t u8 $mnt/update_log | \
+               awk '{ if($2 > 0) printf "0x%x:0x%x:0x0 ", $3, $2  }'))
+       [ ${#ula[@]} -lt 2 ] && error "update_log file corruption"
+
+       local catfile=$mnt/update_log_dir/\[${ula[0]}\]
+
+       echo replace file $catfile
+       do_facet mds2 dd if=/dev/urandom of=$catfile count=100 ||
+               error "Write file $catfile error"
+       unmount_fstype mds2
+
+       start mds2 $(mdsdevname 2) $MDS_MOUNT_OPTS || error "mds2 start fail"
+
+       stop mds1
+       start mds1 $(mdsdevname 1) $MDS_MOUNT_OPTS || error "mds1 start fail"
+
+       echo waiting mds1 recovery....
+       wait_recovery_complete mds1 20
+
+       do_facet mds1 $LCTL get_param mdt.$FSNAME-MDT0000.recovery_status | \
+               grep -w COMPLETE || error "Recovery was blocked"
+}
+run_test 154 "corruption update llog can be skipped"
+
 complete $SECONDS
 check_and_cleanup_lustre
 exit_status