[Ocfs2-tools-devel] [PATCH 3/6] O2info: Add '--cluster-coherent' option for o2info.
Tristan Ye
tristan.ye at oracle.com
Mon Oct 25 04:12:06 PDT 2010
Default will be no cluster-in-coherency.
Signed-off-by: Tristan Ye <tristan.ye at oracle.com>
---
o2info/o2info.1.in | 6 +++++-
o2info/o2info.c | 22 ++++++++++++++++++++++
2 files changed, 27 insertions(+), 1 deletions(-)
diff --git a/o2info/o2info.1.in b/o2info/o2info.1.in
index fe32d70..d748df8 100644
--- a/o2info/o2info.1.in
+++ b/o2info/o2info.1.in
@@ -2,7 +2,7 @@
.SH "NAME"
o2info \- Dump \fIOCFS2\fR file system information on disk.
.SH "SYNOPSIS"
-\fBo2info\fR <\fBdevice or file\fR>
+\fBo2info\fR [\fB\-C|\-\-cluster\-coherent\fR] <\fBdevice or file\fR>
.SH "DESCRIPTION"
.PP
@@ -10,6 +10,10 @@ o2info \- Dump \fIOCFS2\fR file system information on disk.
.SH "OPTIONS"
.TP
+\fB\-C, \-\-cluster\-coherent\fR
+Enable cluster (in)coherency for mounted case, means it will attempt to acquire a global PR lock when querying info from a cluster filesystem, which may degrade the performance, default is none cluster-coherency.
+
+.TP
\fB\-V, \-\-version\fR
Show version and exit.
diff --git a/o2info/o2info.c b/o2info/o2info.c
index 02058af..3fa4627 100644
--- a/o2info/o2info.c
+++ b/o2info/o2info.c
@@ -51,6 +51,13 @@ static int version_handler(struct o2info_option *opt, char *arg)
exit(0);
}
+static int coherency_handler(struct o2info_option *opt, char *arg)
+{
+ cluster_coherent = 1;
+
+ return 0;
+}
+
static struct o2info_option help_option = {
.opt_option = {
.name = "help",
@@ -77,9 +84,24 @@ static struct o2info_option version_option = {
.opt_private = NULL,
};
+static struct o2info_option coherency_option = {
+ .opt_option = {
+ .name = "cluster-coherent",
+ .val = 'C',
+ .has_arg = 0,
+ .flag = NULL,
+ },
+ .opt_help =
+ "-C|--cluster-coherent",
+ .opt_handler = coherency_handler,
+ .opt_op = NULL,
+ .opt_private = NULL,
+};
+
static struct o2info_option *options[] = {
&help_option,
&version_option,
+ &coherency_option,
NULL,
};
--
1.5.5
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