From: tappro <tappro>
Date: Wed, 22 Apr 2009 09:52:00 +0000 (+0000)
Subject: - update versions for partially committed open request
X-Git-Tag: v1_8_0_110~84
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=a6687b41436ba32c79f7a1ce450b6887213740ff;p=fs%2Flustre-release.git

- update versions for partially committed open request
b:19224
i:adilger,rread
---

diff --git a/lustre/include/obd_support.h b/lustre/include/obd_support.h
index c6159a7..343fb3a 100644
--- a/lustre/include/obd_support.h
+++ b/lustre/include/obd_support.h
@@ -185,6 +185,7 @@ extern unsigned int obd_alloc_fail_rate;
 #define OBD_FAIL_MDS_ALLOW_COMMON_EA_SETTING   0x13f
 #define OBD_FAIL_MDS_FAIL_LOV_LOG_ADD    0x140
 #define OBD_FAIL_MDS_LOV_PREP_CREATE     0x141
+#define OBD_FAIL_MDS_SPLIT_OPEN          0x142
 
 #define OBD_FAIL_OST                     0x200
 #define OBD_FAIL_OST_CONNECT_NET         0x201
diff --git a/lustre/mds/mds_open.c b/lustre/mds/mds_open.c
index f7e98e8..43c1793 100644
--- a/lustre/mds/mds_open.c
+++ b/lustre/mds/mds_open.c
@@ -814,6 +814,8 @@ static int mds_finish_open(struct ptlrpc_request *req, struct dentry *dchild,
                 }
                 if (!(body->valid & OBD_MD_FLEASIZE) &&
                     !(body->valid & OBD_MD_FLMODEASIZE)) {
+                        /* split open transactions here */
+                        OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_SPLIT_OPEN, 10);
                         /* no EA: create objects */
                         rc = mds_create_objects(req, DLM_REPLY_REC_OFF + 1, rec,
                                                 mds, obd, dchild, handle, &lmm);
@@ -874,10 +876,11 @@ static int mds_open_by_fid(struct ptlrpc_request *req, struct ll_fid *fid,
 {
         struct obd_device *obd = req->rq_export->exp_obd;
         struct mds_obd *mds = mds_req2mds(req);
-        struct dentry *dchild;
+        struct dentry *dchild, *dparent = NULL;
         char fidname[LL_FID_NAMELEN];
         int fidlen = 0, rc;
         void *handle = NULL;
+        struct inode *inodes[PTLRPC_NUM_VERSIONS] = { NULL };
         ENTRY;
 
         fidlen = ll_fid2str(fidname, fid->id, fid->generation);
@@ -893,6 +896,7 @@ static int mds_open_by_fid(struct ptlrpc_request *req, struct ll_fid *fid,
                 CWARN("Orphan %s found and opened in PENDING directory\n",
                        fidname);
         } else {
+                __u64 *pre_versions = lustre_msg_get_versions(req->rq_reqmsg);
                 l_dput(dchild);
 
                 /* We didn't find it in PENDING so it isn't an orphan.  See
@@ -900,6 +904,33 @@ static int mds_open_by_fid(struct ptlrpc_request *req, struct ll_fid *fid,
                 dchild = mds_fid2dentry(mds, fid, NULL);
                 if (IS_ERR(dchild))
                         RETURN(PTR_ERR(dchild));
+                /**
+                 * bug19224
+                 * this can be replay of partially committed open|create,
+                 * the create itself was committed while LOV EA weren't
+                 * We need to set versions again if conditions are:
+                 * - this is replay
+                 * - the transaction is greater than last_committed
+                 * - this was open|create
+                 * - there was real create so parent pre_version was saved
+                 */
+                if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
+                    (lustre_msg_get_transno(req->rq_reqmsg) >
+                     req->rq_export->exp_last_committed) &&
+                    (rec->ur_flags & MDS_OPEN_CREAT) &&
+                    pre_versions[0] != 0) {
+                        /* need parent to set version */
+                        dparent = mds_fid2dentry(mds, rec->ur_fid1, NULL);
+                        if (IS_ERR(dparent)) {
+                                CERROR("Can't find parent for open replay\n");
+                                l_dput(dchild);
+                                RETURN(PTR_ERR(dparent));
+                        }
+                        /* though file was created, the versions were not
+                         * changed yet, need to replay that too */
+                        inodes[0] = dparent->d_inode;
+                        inodes[1] = dchild->d_inode;
+                }
         }
 
         mds_pack_inode2body(body, dchild->d_inode);
@@ -907,10 +938,11 @@ static int mds_open_by_fid(struct ptlrpc_request *req, struct ll_fid *fid,
         ldlm_reply_set_disposition(rep, DISP_LOOKUP_POS);
 
         rc = mds_finish_open(req, dchild, body, flags, &handle, rec, rep, NULL);
-        rc = mds_finish_transno(mds, NULL, handle,
+        rc = mds_finish_transno(mds, inodes, handle,
                                 req, rc, rep ? rep->lock_policy_res1 : 0, 0);
         /* XXX what do we do here if mds_finish_transno itself failed? */
 
+        l_dput(dparent);
         l_dput(dchild);
         RETURN(rc);
 }
diff --git a/lustre/tests/replay-single.sh b/lustre/tests/replay-single.sh
index ed9a913..75a3623 100755
--- a/lustre/tests/replay-single.sh
+++ b/lustre/tests/replay-single.sh
@@ -799,7 +799,6 @@ test_40(){
 }
 run_test 40 "cause recovery in ptlrpc, ensure IO continues"
 
-
 #b=2814
 # make sure that a read to one osc doesn't try to double-unlock its page just
 # because another osc is invalid.  trigger_group_io used to mistakenly return
@@ -2046,6 +2045,25 @@ test_82() { #bug 18927
 }
 run_test 82 "second open|creat in replay with open orphan"
 
+test_83() { #bug 19224
+#define OBD_FAIL_MDS_SPLIT_OPEN  0x142
+    do_facet mds "lctl set_param fail_loc=0x80000142"
+    # open will sleep after first transaction
+    touch $DIR/$tfile &
+    PID=$!
+    sleep 2
+    # set barrier between open transactions
+    replay_barrier_nodf mds
+    createmany -o $DIR/$tfile- 10
+    # open should finish now
+    wait $PID || return 1
+    fail mds
+    rm $DIR/$tfile || return 2
+    unlinkmany $DIR/$tfile- 10 || return 3
+    return 0
+}
+run_test 83 "open replay with barrier between transactions"
+
 equals_msg `basename $0`: test complete, cleaning up
 check_and_cleanup_lustre
 [ -f "$TESTSUITELOG" ] && cat $TESTSUITELOG && grep -q FAIL $TESTSUITELOG && exit 1 || true