[pve-devel] [RFC OPTIONAL pve-cluster 1/1] add arcsize to rrd

[Matthias Heiserer <m.heiserer@proxmox.com>]

To modify the existing rrd store, rrdtool is required

Signed-off-by: Matthias Heiserer <m.heiserer@proxmox.com>
---
 data/src/status.c           | 1 +
 debian/control              | 1 +
 debian/pve-cluster.postinst | 6 ++++++
 3 files changed, 8 insertions(+)
 create mode 100644 debian/pve-cluster.postinst

diff --git a/data/src/status.c b/data/src/status.c
index 5e1e841..9290141 100644
--- a/data/src/status.c
+++ b/data/src/status.c
@@ -1130,6 +1130,7 @@ static const char *rrd_def_node[] = {
 	"DS:rootused:GAUGE:120:0:U",
 	"DS:netin:DERIVE:120:0:U",
 	"DS:netout:DERIVE:120:0:U",
+	"DS:arcsize:GAUGE:120:0:U",
 
 	"RRA:AVERAGE:0.5:1:70", // 1 min avg - one hour
 	"RRA:AVERAGE:0.5:30:70", // 30 min avg - one day
diff --git a/debian/control b/debian/control
index 2d5a01f..22d96c2 100644
--- a/debian/control
+++ b/debian/control
@@ -37,6 +37,7 @@ Depends: corosync (>= 2.3.4-1),
          libsqlite3-0,
          sqlite3,
          systemd,
+         rrdtool,
          ${misc:Depends},
          ${perl:Depends},
          ${shlibs:Depends},
diff --git a/debian/pve-cluster.postinst b/debian/pve-cluster.postinst
new file mode 100644
index 0000000..cf475cc
--- /dev/null
+++ b/debian/pve-cluster.postinst
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+RRD_DB="/var/lib/rrdcached/db/pve2-node/`hostname`"
+if [ -f $RRD_DB ] && [ `rrdtool info $RRD_DB | grep -q arcsize` ]; then
+        rrdtool tune $RRD_DB 'DS:arcsize:GAUGE:120:0:U'
+fi
-- 
2.30.2