LU-8030 hsm: prevent duplicated HSM requests

[fs/lustre-release.git] / lustre / mdt / mdt_hsm.c

diff --git a/lustre/mdt/mdt_hsm.c b/lustre/mdt/mdt_hsm.c
index edf77ea..ab0e851 100644 (file)
--- a/lustre/mdt/mdt_hsm.c
+++ b/lustre/mdt/mdt_hsm.c
@@ -22,9 +22,9 @@
 /*
  * Copyright (c) 2011, 2012 Commissariat a l'energie atomique et aux energies
  *                          alternatives
- *
- * Copyright (c) 2012, 2014, Intel Corporation.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2015, Intel Corporation.
  */
 /*
  * lustre/mdt/mdt_hsm.c
@@ -214,8 +214,7 @@ int mdt_hsm_state_get(struct tgt_session_info *tsi)
 
        lh = &info->mti_lh[MDT_LH_CHILD];
        mdt_lock_reg_init(lh, LCK_PR);
-       rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LOOKUP,
-                            MDT_LOCAL_LOCK);
+       rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LOOKUP);
        if (rc < 0)
                GOTO(out_ucred, rc);
 
@@ -276,7 +275,7 @@ int mdt_hsm_state_set(struct tgt_session_info *tsi)
        lh = &info->mti_lh[MDT_LH_CHILD];
        mdt_lock_reg_init(lh, LCK_PW);
        rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LOOKUP |
-                            MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
+                            MDS_INODELOCK_XATTR);
        if (rc < 0)
                GOTO(out_ucred, rc);
 
@@ -461,6 +460,22 @@ out:
        return rc;
 }
 
+/* Return true if a FID is present in an action list. */
+static bool is_fid_in_hal(struct hsm_action_list *hal, const lustre_fid *fid)
+{
+       struct hsm_action_item *hai;
+       int i;
+
+       for (hai = hai_first(hal), i = 0;
+            i < hal->hal_count;
+            i++, hai = hai_next(hai)) {
+               if (lu_fid_eq(&hai->hai_fid, fid))
+                       return true;
+       }
+
+       return false;
+}
+
 /**
  * Process the HSM actions described in a struct hsm_user_request.
  *
@@ -549,9 +564,14 @@ int mdt_hsm_request(struct tgt_session_info *tsi)
        obd_uuid2fsname(hal->hal_fsname, mdt_obd_name(info->mti_mdt),
                        MTI_NAME_MAXLEN);
 
-       hal->hal_count = hr->hr_itemcount;
+       hal->hal_count = 0;
        hai = hai_first(hal);
        for (i = 0; i < hr->hr_itemcount; i++, hai = hai_next(hai)) {
+               /* Get rid of duplicate entries. Otherwise we get
+                * duplicated work in the llog. */
+               if (is_fid_in_hal(hal, &hui[i].hui_fid))
+                       continue;
+
                hai->hai_action = action;
                hai->hai_cookie = 0;
                hai->hai_gid = 0;
@@ -559,6 +579,8 @@ int mdt_hsm_request(struct tgt_session_info *tsi)
                hai->hai_extent = hui[i].hui_extent;
                memcpy(hai->hai_data, data, hr->hr_data_len);
                hai->hai_len = sizeof(*hai) + hr->hr_data_len;
+
+               hal->hal_count++;
        }
 
        rc = mdt_hsm_add_actions(info, hal, &compound_id);