diff options
Diffstat (limited to 'xlators/cluster/afr/src/afr-inode-read.c')
| -rw-r--r-- | xlators/cluster/afr/src/afr-inode-read.c | 88 |
1 files changed, 79 insertions, 9 deletions
diff --git a/xlators/cluster/afr/src/afr-inode-read.c b/xlators/cluster/afr/src/afr-inode-read.c index 20446d88c99..ecf94a523db 100644 --- a/xlators/cluster/afr/src/afr-inode-read.c +++ b/xlators/cluster/afr/src/afr-inode-read.c @@ -713,14 +713,64 @@ unwind: return ret; } +/** + * node-uuid cbk uses next child querying mechanism + */ +int32_t +afr_getxattr_node_uuid_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, int32_t op_errno, + dict_t *dict, dict_t *xdata) +{ + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + xlator_t **children = NULL; + int unwind = 1; + int curr_call_child = 0; + + priv = this->private; + children = priv->children; + + local = frame->local; + + if (op_ret == -1) { /** query the _next_ child */ + + /** + * _current_ becomes _next_ + * If done with all childs and yet no success; give up ! + */ + curr_call_child = (int) ((long)cookie); + if (++curr_call_child == priv->child_count) + goto unwind; + + gf_msg_debug (this->name, op_errno, + "op_ret (-1): Re-querying afr-child (%d/%d)", + curr_call_child, priv->child_count); + + unwind = 0; + STACK_WIND_COOKIE (frame, afr_getxattr_node_uuid_cbk, + (void *) (long) curr_call_child, + children[curr_call_child], + children[curr_call_child]->fops->getxattr, + &local->loc, + local->cont.getxattr.name, + local->xdata_req); + } + + unwind: + if (unwind) + AFR_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, + xdata); + + return 0; +} /** - * node-uuid cbk returns the list of node_uuids for the subvolume. + * list-node-uuids cbk returns the list of node_uuids for the subvolume. */ int32_t -afr_getxattr_node_uuid_cbk (call_frame_t *frame, void *cookie, xlator_t *this, - int32_t op_ret, int32_t op_errno, dict_t *dict, - dict_t *xdata) +afr_getxattr_list_node_uuids_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int32_t op_ret, + int32_t op_errno, dict_t *dict, dict_t *xdata) { afr_local_t *local = NULL; afr_private_t *priv = NULL; @@ -794,7 +844,8 @@ unlock: local->op_errno = ENOMEM; goto unwind; } - ret = dict_set_dynstr (local->dict, local->cont.getxattr.name, + ret = dict_set_dynstr (local->dict, + GF_XATTR_LIST_NODE_UUIDS_KEY, xattr_serz); if (ret) { gf_msg (this->name, GF_LOG_ERROR, @@ -1427,8 +1478,8 @@ afr_is_special_xattr (const char *name, fop_getxattr_cbk_t *cbk, *cbk = afr_common_getxattr_stime_cbk; } else if (strcmp (name, QUOTA_SIZE_KEY) == 0) { *cbk = afr_getxattr_quota_size_cbk; - } else if (!strcmp (name, GF_XATTR_NODE_UUID_KEY)) { - *cbk = afr_getxattr_node_uuid_cbk; + } else if (!strcmp (name, GF_XATTR_LIST_NODE_UUIDS_KEY)) { + *cbk = afr_getxattr_list_node_uuids_cbk; } else { is_spl = _gf_false; } @@ -1453,15 +1504,20 @@ afr_getxattr_all_subvols (xlator_t *this, call_frame_t *frame, //local->call_count set in afr_local_init call_count = local->call_count; + if (!strcmp (name, GF_XATTR_LIST_NODE_UUIDS_KEY)) { + GF_FREE (local->cont.getxattr.name); + local->cont.getxattr.name = gf_strdup (GF_XATTR_NODE_UUID_KEY); + } + //If up-children count is 0, afr_local_init would have failed already //and the call would have unwound so not handling it here. - for (i = 0; i < priv->child_count; i++) { if (local->child_up[i]) { STACK_WIND_COOKIE (frame, cbk, (void *) (long) i, priv->children[i], priv->children[i]->fops->getxattr, - loc, name, NULL); + loc, local->cont.getxattr.name, + NULL); if (!--call_count) break; } @@ -1545,6 +1601,8 @@ afr_getxattr (call_frame_t *frame, xlator_t *this, { afr_private_t *priv = NULL; afr_local_t *local = NULL; + xlator_t **children = NULL; + int i = 0; int32_t op_errno = 0; int ret = -1; fop_getxattr_cbk_t cbk = NULL; @@ -1556,6 +1614,8 @@ afr_getxattr (call_frame_t *frame, xlator_t *this, priv = this->private; + children = priv->children; + loc_copy (&local->loc, loc); local->op = GF_FOP_GETXATTR; @@ -1596,6 +1656,16 @@ afr_getxattr (call_frame_t *frame, xlator_t *this, return 0; } + if (XATTR_IS_NODE_UUID (name)) { + i = 0; + STACK_WIND_COOKIE (frame, afr_getxattr_node_uuid_cbk, + (void *) (long) i, + children[i], + children[i]->fops->getxattr, + loc, name, xdata); + return 0; + } + no_name: afr_read_txn (frame, this, local->loc.inode, afr_getxattr_wind, |