Some btrfs test cases use btrfs module-reload to unregister devices in the btrfs kernel. The problem with the module-reload approach is, if test system contains btrfs as rootfs, then you can't run these test cases.
Patches [1] introduced btrfs forget feature which can unregister devices without the module-reload approach. [1] btrfs-progs: device scan: add new option to forget one or all scanned devices btrfs: introduce new ioctl to unregister a btrfs device And this patch makes relevant changes in the fstests to use this new feature, when available. Signed-off-by: Anand Jain <[email protected]> --- v2: Update change log. Rename _require_btrfs_forget_if_not_fs_loadable() to _require_btrfs_forget_or_module_loadable() Rename _btrfs_forget_if_not_fs_reload() to _btrfs_forget_or_module_reload() common/btrfs | 20 ++++++++++++++++++++ tests/btrfs/124 | 6 +++--- tests/btrfs/125 | 6 +++--- tests/btrfs/154 | 6 +++--- tests/btrfs/164 | 4 ++-- 5 files changed, 31 insertions(+), 11 deletions(-) diff --git a/common/btrfs b/common/btrfs index f6513c06f95f..19ac7cc4b18c 100644 --- a/common/btrfs +++ b/common/btrfs @@ -382,3 +382,23 @@ _scratch_btrfs_sectorsize() $BTRFS_UTIL_PROG inspect-internal dump-super $SCRATCH_DEV |\ grep sectorsize | awk '{print $2}' } + +_btrfs_supports_forget() +{ + $BTRFS_UTIL_PROG device scan --help | grep -wq forget && \ + $BTRFS_UTIL_PROG device scan --forget > /dev/null 2>&1 +} + +_require_btrfs_forget_or_module_loadable() +{ + _btrfs_supports_forget && return + + _require_loadable_fs_module "btrfs" +} + +_btrfs_forget_or_module_reload() +{ + _btrfs_supports_forget && return + + _reload_fs_module "btrfs" +} diff --git a/tests/btrfs/124 b/tests/btrfs/124 index a52c65f608ff..0686a3b5f991 100755 --- a/tests/btrfs/124 +++ b/tests/btrfs/124 @@ -51,7 +51,7 @@ _supported_fs btrfs _supported_os Linux _require_scratch_dev_pool 2 _test_unmount -_require_loadable_fs_module "btrfs" +_require_btrfs_forget_or_module_loadable _scratch_dev_pool_get 2 @@ -86,7 +86,7 @@ echo "clean btrfs ko" >> $seqres.full _scratch_unmount # un-scan the btrfs devices -_reload_fs_module "btrfs" +_btrfs_forget_or_module_reload echo >> $seqres.full echo "-----Write degraded mount fill upto $max_fs_sz bytes-----" >> $seqres.full @@ -125,7 +125,7 @@ echo echo "Mount degraded with the other dev" _scratch_unmount # un-scan the btrfs devices -_reload_fs_module "btrfs" +_btrfs_forget_or_module_reload _mount -o degraded $dev2 $SCRATCH_MNT >>$seqres.full 2>&1 _run_btrfs_util_prog filesystem show checkpoint3=`md5sum $SCRATCH_MNT/tf2` diff --git a/tests/btrfs/125 b/tests/btrfs/125 index 847fa62ad25f..e1edccddd7d4 100755 --- a/tests/btrfs/125 +++ b/tests/btrfs/125 @@ -50,7 +50,7 @@ _supported_fs btrfs _supported_os Linux _require_scratch_dev_pool 3 _test_unmount -_require_loadable_fs_module "btrfs" +_require_btrfs_forget_or_module_loadable _require_btrfs_fs_feature raid56 _scratch_dev_pool_get 3 @@ -103,7 +103,7 @@ echo "unmount" >> $seqres.full _scratch_unmount echo "clean btrfs ko" >> $seqres.full # un-scan the btrfs devices -_reload_fs_module "btrfs" +_btrfs_forget_or_module_reload _mount -o degraded,device=$dev2 $dev1 $SCRATCH_MNT >>$seqres.full 2>&1 dd if=/dev/zero of="$SCRATCH_MNT"/tf2 bs=$bs count=$count \ >>$seqres.full 2>&1 @@ -139,7 +139,7 @@ echo "Mount degraded but with other dev" _scratch_unmount # un-scan the btrfs devices -_reload_fs_module "btrfs" +_btrfs_forget_or_module_reload _mount -o degraded,device=${dev2} $dev3 $SCRATCH_MNT >>$seqres.full 2>&1 diff --git a/tests/btrfs/154 b/tests/btrfs/154 index cd6c688fb9fe..cbf65a42919d 100755 --- a/tests/btrfs/154 +++ b/tests/btrfs/154 @@ -36,7 +36,7 @@ rm -f $seqres.full _supported_fs btrfs _supported_os Linux _require_scratch_dev_pool 2 -_require_loadable_fs_module "btrfs" +_require_btrfs_forget_or_module_loadable _scratch_dev_pool_get 2 @@ -90,7 +90,7 @@ degrade_mount_write() echo "clean btrfs ko" >> $seqres.full # un-scan the btrfs devices - _reload_fs_module "btrfs" + _btrfs_forget_or_module_reload _mount -o degraded $DEV1 $SCRATCH_MNT >>$seqres.full 2>&1 cnt=$(( $COUNT/10 )) dd if=/dev/urandom of="$SCRATCH_MNT"/tf1 bs=$bs count=$cnt \ @@ -142,7 +142,7 @@ verify() echo "unmount" >> $seqres.full _scratch_unmount - _reload_fs_module "btrfs" + _btrfs_forget_or_module_reload _mount -o degraded $DEV2 $SCRATCH_MNT >>$seqres.full 2>&1 verify_checkpoint1=`md5sum $SCRATCH_MNT/tf1` verify_checkpoint2=`md5sum $SCRATCH_MNT/tf2` diff --git a/tests/btrfs/164 b/tests/btrfs/164 index 097191a0e493..e280f52e930a 100755 --- a/tests/btrfs/164 +++ b/tests/btrfs/164 @@ -36,7 +36,7 @@ rm -f $seqres.full # Modify as appropriate. _supported_fs btrfs _supported_os Linux -_require_loadable_fs_module "btrfs" +_require_btrfs_forget_or_module_loadable _require_scratch_dev_pool 2 _scratch_dev_pool_get 2 @@ -69,7 +69,7 @@ delete_seed() { _run_btrfs_util_prog device delete $dev_seed $SCRATCH_MNT _scratch_unmount - _reload_fs_module "btrfs" + _btrfs_forget_or_module_reload run_check _mount $dev_sprout $SCRATCH_MNT _run_btrfs_util_prog filesystem show -m $SCRATCH_MNT echo -- sprout -- -- 2.17.1
