From 7d0cf52a344e476963fe97e71f86488d5bb17b1c Mon Sep 17 00:00:00 2001 From: Kaushal M Date: Fri, 19 Apr 2013 15:16:56 +0530 Subject: glusterd-volgen: Enable open-behind based on op-version This patch enables the open-behind by default only when the op-version allows it. Also the volume op-version calculations take account of this enablement. Change-Id: Idf7a3c274ec4828aafc815cdd1df829ecb853354 BUG: 954256 Signed-off-by: Kaushal M Reviewed-on: http://review.gluster.org/4866 Reviewed-by: Krishnan Parthasarathi Tested-by: Gluster Build System Reviewed-by: Jeff Darcy Reviewed-by: Vijay Bellur --- xlators/mgmt/glusterd/src/glusterd-op-sm.c | 23 +++++++++++++---------- xlators/mgmt/glusterd/src/glusterd-utils.c | 24 +++++++++++++++++++++++- xlators/mgmt/glusterd/src/glusterd-volgen.c | 14 ++++++++++++++ 3 files changed, 50 insertions(+), 11 deletions(-) diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.c b/xlators/mgmt/glusterd/src/glusterd-op-sm.c index dbc23525f..7f19be072 100644 --- a/xlators/mgmt/glusterd/src/glusterd-op-sm.c +++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.c @@ -1629,6 +1629,19 @@ glusterd_op_set_volume (dict_t *dict) goto out; } + /* Update the cluster op-version before regenerating volfiles so that + * correct volfiles are generated + */ + if (new_op_version > priv->op_version) { + priv->op_version = new_op_version; + ret = glusterd_store_global_info (this); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to store op-version"); + goto out; + } + } + if (!global_opt) { ret = glusterd_create_volfiles_and_notify_services (volinfo); if (ret) { @@ -1682,16 +1695,6 @@ glusterd_op_set_volume (dict_t *dict) } } - if (new_op_version > priv->op_version) { - priv->op_version = new_op_version; - ret = glusterd_store_global_info (this); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, - "Failed to store op-version"); - goto out; - } - } - out: GF_FREE (key_fixed); gf_log (this->name, GF_LOG_DEBUG, "returning %d", ret); diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c index 27b974796..65cc2df96 100644 --- a/xlators/mgmt/glusterd/src/glusterd-utils.c +++ b/xlators/mgmt/glusterd/src/glusterd-utils.c @@ -7528,7 +7528,8 @@ _update_volume_op_versions (dict_t *this, char *key, data_t *value, void *data) void gd_update_volume_op_versions (glusterd_volinfo_t *volinfo) { - glusterd_conf_t *conf = NULL; + glusterd_conf_t *conf = NULL; + gf_boolean_t ob_enabled = _gf_false; GF_ASSERT (volinfo); @@ -7541,5 +7542,26 @@ gd_update_volume_op_versions (glusterd_volinfo_t *volinfo) dict_foreach (volinfo->dict, _update_volume_op_versions, volinfo); + /* Special case for open-behind + * If cluster op-version >= 2 and open-behind hasn't been explicitly + * disabled, volume op-versions must be updated to account for it + */ + + /* TODO: Remove once we have a general way to update automatically + * enabled features + */ + if (conf->op_version >= 2) { + ob_enabled = dict_get_str_boolean (volinfo->dict, + "performance.open-behind", + _gf_true); + if (ob_enabled) { + + if (volinfo->op_version < 2) + volinfo->op_version = 2; + if (volinfo->client_op_version < 2) + volinfo->client_op_version = 2; + } + } + return; } diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c index 56ce6b3a1..72bd36d3a 100644 --- a/xlators/mgmt/glusterd/src/glusterd-volgen.c +++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c @@ -460,6 +460,8 @@ process_option (char *key, data_t *value, void *param) vme.key = key; vme.voltype = odt->vme->voltype; vme.option = odt->vme->option; + vme.op_version = odt->vme->op_version; + if (!vme.option) { vme.option = strrchr (key, '.'); if (vme.option) @@ -1674,6 +1676,12 @@ perfxl_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme, { char *volname = NULL; gf_boolean_t enabled = _gf_false; + xlator_t *this = NULL; + glusterd_conf_t *conf = NULL; + + this = THIS; + GF_ASSERT (this); + conf = this->private; volname = param; @@ -1685,6 +1693,12 @@ perfxl_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme, if (!enabled) return 0; + /* Check op-version before adding the 'open-behind' xlator in the graph + */ + if (!strcmp (vme->key, "performance.open-behind") && + (vme->op_version > conf->op_version)) + return 0; + if (volgen_graph_add (graph, vme->voltype, volname)) return 0; else -- cgit