From: wang di <[email protected]>

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 <[email protected]>
Reviewed-by: Oleg Drokin <[email protected]>
Signed-off-by: Peng Tao <[email protected]>
Signed-off-by: Andreas Dilger <[email protected]>
---
 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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