[PATCH 15/17] staging: lustre: lov: Don't wait for active target with OBD_STATFS_NODELAY

From: James Simmons
Date: Sun Apr 10 2016 - 09:14:52 EST


From: Andriy Skulysh <Andriy_Skulysh@xxxxxxxxxxx>

Patch for LU-631 which was landed before the upstream merge broke
OBD_STATFS_NODELAY behaviour. It adds unnecessary delay while
running df command with inactive OSTs. We shouldn't try to recover
connection to OST in this case.

Signed-off-by: Andriy Skulysh <Andriy_Skulysh@xxxxxxxxxxx>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4010
Reviewed-on: http://review.whamcloud.com/7762
Reviewed-by: Andreas Dilger <andreas.dilger@xxxxxxxxx>
Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx>
Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx>
---
drivers/staging/lustre/lustre/lov/lov_request.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/lustre/lustre/lov/lov_request.c b/drivers/staging/lustre/lustre/lov/lov_request.c
index 7178a02..475ca2f 100644
--- a/drivers/staging/lustre/lustre/lov/lov_request.c
+++ b/drivers/staging/lustre/lustre/lov/lov_request.c
@@ -716,12 +716,15 @@ int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
struct lov_request *req;

if (!lov->lov_tgts[i] ||
- (!lov_check_and_wait_active(lov, i) &&
- (oinfo->oi_flags & OBD_STATFS_NODELAY))) {
+ (oinfo->oi_flags & OBD_STATFS_NODELAY &&
+ !lov->lov_tgts[i]->ltd_active)) {
CDEBUG(D_HA, "lov idx %d inactive\n", i);
continue;
}

+ if (!lov->lov_tgts[i]->ltd_active)
+ lov_check_and_wait_active(lov, i);
+
/* skip targets that have been explicitly disabled by the
* administrator
*/
--
1.7.1