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Subject[PATCH 25/39] staging/lustre/lmv: choose right MDT for open by FID
Date
From: wang di <di.wang@intel.com>

If the open is by FID, LMV should locate MDT by the FID
of the file/directory, instead of its parent.

Lustre-change: http://review.whamcloud.com/7253
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3712
Signed-off-by: wang di <di.wang@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
---
drivers/staging/lustre/lustre/lmv/lmv_intent.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lustre/lmv/lmv_intent.c b/drivers/staging/lustre/lustre/lmv/lmv_intent.c
index 511b3b4..9d25fc4 100644
--- a/drivers/staging/lustre/lustre/lmv/lmv_intent.c
+++ b/drivers/staging/lustre/lustre/lmv/lmv_intent.c
@@ -167,7 +167,13 @@ int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
struct mdt_body *body;
int rc;

- tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
+ /* Note: client might open with some random flags(sanity 33b), so we can
+ * not make sure op_fid2 is being initialized with BY_FID flag */
+ if (it->it_flags & MDS_OPEN_BY_FID && fid_is_sane(&op_data->op_fid2))
+ tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
+ else
+ tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
+
if (IS_ERR(tgt))
return PTR_ERR(tgt);

--
1.7.9.5


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