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authorAvra Sengupta <asengupt@redhat.com>2014-02-06 13:03:58 +0530
committerVijay Bellur <vbellur@redhat.com>2014-02-10 23:25:40 -0800
commit97ce783de326b51fcba65737f07db2c314d1e218 (patch)
tree70ee9d9c1a4abd4c28a236920121d1bfbc56912b /libglusterfs
parentb000b934aff4b452cf1c35c42272482a7738506e (diff)
glusterd: Volume locks and transaction specific opinfos
With this patch we are replacing the existing cluster-wide lock taken on glusterds across the cluster, with volume locks which are also taken on glusterds across the cluster, but are volume specific. So with the volume locks we are able to perform more than one gluster operation at the same time, as long as the operations are being performed on different volumes. We maintain a global list of volume-locks (using a dict for a list) where the key is the volume name, and which saves the uuid of the originator glusterd. These locks are held and released per volume transaction. In order to acheive multiple gluster operations occuring at the same time, we also separate opinfos in the op-state-machine, as a part of this patch. To do so, we generate a unique transaction-id (uuid) per gluster transaction. An opinfo is then associated with this transaction id, which is used throughout the transaction. We maintain a run-time global list(using a dict) of transaction-ids, and their respective opinfos to achieve this. Upstream Feature Page: http://www.gluster.org/community/documentation/index.php/Features/glusterd-volume-locks Change-Id: Iaad505a854bac8de8f83beec0357eb6cde3f7ea8 BUG: 1011470 Signed-off-by: Avra Sengupta <asengupt@redhat.com> Reviewed-on: http://review.gluster.org/5994 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'libglusterfs')
-rw-r--r--libglusterfs/src/globals.h1
-rw-r--r--libglusterfs/src/mem-types.h5
2 files changed, 5 insertions, 1 deletions
diff --git a/libglusterfs/src/globals.h b/libglusterfs/src/globals.h
index 0de0392..16ab962 100644
--- a/libglusterfs/src/globals.h
+++ b/libglusterfs/src/globals.h
@@ -32,6 +32,7 @@
#define GD_OP_VERSION_MAX 4 /* MAX VERSION is the maximum count in VME table,
should keep changing with introduction of newer
versions */
+#define GD_OP_VERSION_4 4 /* Op-Version 4 */
#include "xlator.h"
diff --git a/libglusterfs/src/mem-types.h b/libglusterfs/src/mem-types.h
index 726d38e..26237fe 100644
--- a/libglusterfs/src/mem-types.h
+++ b/libglusterfs/src/mem-types.h
@@ -119,6 +119,9 @@ enum gf_common_mem_types_ {
gf_common_mt_syncopctx = 103,
gf_common_mt_iobrefs = 104,
gf_common_mt_gsync_status_t = 105,
- gf_common_mt_end = 106
+ gf_common_mt_uuid_t = 106,
+ gf_common_mt_vol_lock_obj_t = 107,
+ gf_common_mt_txn_opinfo_obj_t = 108,
+ gf_common_mt_end = 109
};
#endif