From bd0cfd11b42a71baa6fd4e5b4fec1977fd7cd74d Mon Sep 17 00:00:00 2001 From: Chris Hunter Date: Mon, 22 Jun 2015 07:22:19 -0400 Subject: [PATCH] lustre add README --- lustre/README.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 lustre/README.md diff --git a/lustre/README.md b/lustre/README.md new file mode 100644 index 00000000..a5d7ce40 --- /dev/null +++ b/lustre/README.md @@ -0,0 +1,17 @@ +Lustre Client Ganglia Metrics + +These python scripts collect lustre filesystem metric for ganglia-gmond module. + +The scripts attempt to collect separate metrics for each lustre +filesystem mounted on the client. In addition to typical read/write bandwidth +metrics, the scripts also attempt to collect inode-related metrics (network RPC calls from the client to the object storage servers). + +Lustre client exposes metrics through linux sysfs +(ie. /proc/fs/lustre/...). + +The "llite" metrics are high-level aggergate metrics of the underlying +storage targets. On older versions of lustre, there are known bugs in +the llite values. The "osc" metrics are lower level, offering values +for each storage target (ie. LUN) that is accessed by the client. Note +that lustre client uses local (client-side) file caching which can +affect these values.