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-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volume-set.c38
1 files changed, 31 insertions, 7 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-set.c b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
index 3d3525297f5..32302471bb9 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volume-set.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
@@ -1830,46 +1830,70 @@ struct volopt_map_entry glusterd_volopt_map[] = {
.option = "write-freq-threshold",
.op_version = GD_OP_VERSION_3_7_0,
.flags = OPT_FLAG_CLIENT_OPT,
- .validate_fn = validate_tier
+ .validate_fn = validate_tier,
+ .description = "Defines the number of writes, in a promotion/demotion"
+ " cycle, that would mark a file HOT for promotion. Any"
+ " file that has write hits less than this value will "
+ "be considered as COLD and will be demoted."
},
{ .key = "cluster.read-freq-threshold",
.voltype = "cluster/tier",
.option = "read-freq-threshold",
.op_version = GD_OP_VERSION_3_7_0,
.flags = OPT_FLAG_CLIENT_OPT,
- .validate_fn = validate_tier
+ .validate_fn = validate_tier,
+ .description = "Defines the number of reads, in a promotion/demotion "
+ "cycle, that would mark a file HOT for promotion. Any "
+ "file that has read hits less than this value will be "
+ "considered as COLD and will be demoted."
},
{ .key = "cluster.tier-promote-frequency",
.voltype = "cluster/tier",
.option = "tier-promote-frequency",
.op_version = GD_OP_VERSION_3_7_0,
.flags = OPT_FLAG_CLIENT_OPT,
- .validate_fn = validate_tier
+ .validate_fn = validate_tier,
+ .description = "Defines how often the promotion should be triggered "
+ "i.e. periodicity of promotion cycles. The value is in "
+ "secs."
},
{ .key = "cluster.tier-demote-frequency",
.voltype = "cluster/tier",
.option = "tier-demote-frequency",
.op_version = GD_OP_VERSION_3_7_0,
.flags = OPT_FLAG_CLIENT_OPT,
- .validate_fn = validate_tier
+ .validate_fn = validate_tier,
+ .description = "Defines how often the demotion should be triggered "
+ "i.e. periodicity of demotion cycles. The value is in "
+ "secs."
},
{ .key = "features.ctr-enabled",
.voltype = "features/changetimerecorder",
.value = "off",
.option = "ctr-enabled",
- .op_version = GD_OP_VERSION_3_7_0
+ .op_version = GD_OP_VERSION_3_7_0,
+ .description = "Enable CTR xlator"
},
{ .key = "features.record-counters",
.voltype = "features/changetimerecorder",
.value = "off",
.option = "record-counters",
- .op_version = GD_OP_VERSION_3_7_0
+ .op_version = GD_OP_VERSION_3_7_0,
+ .description = "Its a Change Time Recorder Xlator option to enable recording write "
+ "and read heat counters. The default is disabled. "
+ "If enabled, \"cluster.write-freq-threshold\" and "
+ "\"cluster.read-freq-threshold\" defined the number "
+ "of writes (or reads) to a given file are needed "
+ "before triggering migration."
},
{ .key = "features.ctr_link_consistency",
.voltype = "features/changetimerecorder",
.value = "off",
.option = "ctr_link_consistency",
- .op_version = GD_OP_VERSION_3_7_0
+ .op_version = GD_OP_VERSION_3_7_0,
+ .description = "Enable a crash consistent way of recording hardlink "
+ "updates by Change Time Recorder Xlator. When recording in a crash "
+ "consistent way the data operations will experience more latency."
},
#endif /* USE_GFDB */
{ .key = "locks.trace",