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authorAnand Avati <avati@gluster.com>2011-09-24 16:14:11 +0530
committerAnand Avati <avati@redhat.com>2012-02-20 21:14:28 -0800
commitc41a9d1c3fe4002bdf8849c4e8ae7c2e10841c69 (patch)
treefc206a62f4b044846bf710db85f2cc046c0551fe /xlators/performance/md-cache/src/md-cache-mem-types.h
parent1206437fcfc1f3e1bd4a6faec3341c240bae5cf2 (diff)
md-cache: meta-data caching translator
This is a metadata caching translator which is well integrated with glusterfs core framework and leverages some of the recent protocol changes to do a better job at caching. - It uses the attributes returned along callbacks of all calls to update its attribute cache as frequently as possible without issuing calls on its own (i.e, very low overhead) - It caches attributes returned via readdirp into the inode contexts corresponding to those entries (i.e, well integrated) - It caches and updates xattrs and not just inode attributes (i.e, eliminates the need for a separate xattr-prefetch translator) In its current form it has a timeout based consistency model Change-Id: I891f6225c1a4c08bb111e287571d5f6d326dbe97 BUG: 765785 Reviewed-on: http://review.gluster.com/2713 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'xlators/performance/md-cache/src/md-cache-mem-types.h')
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diff --git a/xlators/performance/md-cache/src/md-cache-mem-types.h b/xlators/performance/md-cache/src/md-cache-mem-types.h
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+++ b/xlators/performance/md-cache/src/md-cache-mem-types.h
@@ -0,0 +1,33 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+
+#ifndef __MDC_MEM_TYPES_H__
+#define __MDC_MEM_TYPES_H__
+
+#include "mem-types.h"
+
+enum gf_mdc_mem_types_ {
+ gf_mdc_mt_mdc_local_t = gf_common_mt_end + 1,
+ gf_mdc_mt_md_cache_t,
+ gf_mdc_mt_mdc_conf_t,
+ gf_mdc_mt_end
+};
+#endif
+