LU-16032 tests: restore delay_unlink_mb in sanity/360

Restore the original value of osd-ldiskfs.*.delay_unlink_mb after
sanity test_360 is finished, so that it doesn't have an impact on
later tests running, in particular sanity-quota.sh was seeing some
delay in freeing quota for files that were just deleted.

Test-Parameters: trivial testlist=sanity-quota
Fixes: a772e90243 ("LU-16032 osd: move unlink of large objects to separate thread")
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I7c1ab02262afdef2fc51f9fbc3932d954a4f8304
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/53218
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-by: Artem Blagodarenko <ablagodarenko@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index 1aa2d54..20e6df5 100755 (executable)
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -26617,7 +26617,11 @@ test_360() {
        [[ "$ost1_FSTYPE" == "ldiskfs" ]] || skip "ldiskfs only test"
 
        check_set_fallocate_or_skip
-       do_facet ost1 "$LCTL set_param osd-ldiskfs.delayed_unlink_mb=1MiB"
+       local param="osd-ldiskfs.delayed_unlink_mb"
+       local old=($(do_facet ost1 "$LCTL get_param -n $param"))
+
+       do_facet ost1 "$LCTL set_param $param=1MiB"
+       stack_trap "do_facet ost1 $LCTL set_param $param=${old[0]}"
 
        mkdir $DIR/$tdir/
        do_facet ost1 $LCTL set_param debug=+inode