summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--xlators/cluster/dht/src/dht-common.h1
-rw-r--r--xlators/cluster/dht/src/dht-helper.c29
-rw-r--r--xlators/cluster/dht/src/dht-inode-read.c11
3 files changed, 40 insertions, 1 deletions
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h
index d00d5686..2be76299 100644
--- a/xlators/cluster/dht/src/dht-common.h
+++ b/xlators/cluster/dht/src/dht-common.h
@@ -445,6 +445,7 @@ int dht_iatt_merge (xlator_t *this, struct iatt *to, struct iatt
xlator_t *dht_subvol_get_hashed (xlator_t *this, loc_t *loc);
xlator_t *dht_subvol_get_cached (xlator_t *this, inode_t *inode);
xlator_t *dht_subvol_next (xlator_t *this, xlator_t *prev);
+xlator_t *dht_subvol_next_available (xlator_t *this, xlator_t *prev);
int dht_subvol_cnt (xlator_t *this, xlator_t *subvol);
int dht_hash_compute (xlator_t *this, int type, const char *name, uint32_t *hash_p);
diff --git a/xlators/cluster/dht/src/dht-helper.c b/xlators/cluster/dht/src/dht-helper.c
index 23fc1ff9..1cf343d2 100644
--- a/xlators/cluster/dht/src/dht-helper.c
+++ b/xlators/cluster/dht/src/dht-helper.c
@@ -505,7 +505,36 @@ out:
return next;
}
+/* This func wraps around, if prev is actually the last subvol.
+ */
+xlator_t *
+dht_subvol_next_available (xlator_t *this, xlator_t *prev)
+{
+ dht_conf_t *conf = NULL;
+ int i = 0;
+ xlator_t *next = NULL;
+ conf = this->private;
+ if (!conf)
+ goto out;
+
+ for (i = 0; i < conf->subvolume_cnt; i++) {
+ if (conf->subvolumes[i] == prev) {
+ /* if prev is last in conf->subvolumes, then wrap
+ * around.
+ */
+ if ((i + 1) < conf->subvolume_cnt) {
+ next = conf->subvolumes[i + 1];
+ } else {
+ next = conf->subvolumes[0];
+ }
+ break;
+ }
+ }
+
+out:
+ return next;
+}
int
dht_subvol_cnt (xlator_t *this, xlator_t *subvol)
{
diff --git a/xlators/cluster/dht/src/dht-inode-read.c b/xlators/cluster/dht/src/dht-inode-read.c
index d9b311fe..10f59ab2 100644
--- a/xlators/cluster/dht/src/dht-inode-read.c
+++ b/xlators/cluster/dht/src/dht-inode-read.c
@@ -501,18 +501,27 @@ dht_access_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int ret = -1;
dht_local_t *local = NULL;
xlator_t *subvol = NULL;
+ call_frame_t *prev = NULL;
local = frame->local;
+ prev = cookie;
+ if (!prev || !prev->this)
+ goto out;
if (local->call_cnt != 1)
goto out;
if ((op_ret == -1) && (op_errno == ENOTCONN) &&
IA_ISDIR(local->loc.inode->ia_type)) {
- subvol = dht_first_up_subvol (this);
+ subvol = dht_subvol_next_available (this, prev->this);
if (!subvol)
goto out;
+ /* check if we are done with visiting every node */
+ if (subvol == local->cached_subvol) {
+ goto out;
+ }
+
STACK_WIND (frame, dht_access_cbk, subvol, subvol->fops->access,
&local->loc, local->rebalance.flags, NULL);
return 0;