Hi,
it seems Xen changed the paths to the block device statistics in sysfs:
from "/sys/devices/xen-backend/vbd-%d-%d/statistics/%s" to
"/sys/bus/xen-backend/devices/vbd-%d-%d/statistics/%s":
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=596004
Attached patch fixes this. O.k. to apply?
-- Guido
>From a98e04122a6d869ea9ccaf3122c6abed73720ad7 Mon Sep 17 00:00:00 2001
From: Gerald Turner <gturner@xxxxxxxxxx>
Date: Wed, 8 Sep 2010 21:24:44 +0200
Subject: [PATCH] Newer Xen versons moved the device statistics.
Check these locations too.
---
src/xen/block_stats.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/src/xen/block_stats.c b/src/xen/block_stats.c
index 6e7a5c3..1d875f2 100644
--- a/src/xen/block_stats.c
+++ b/src/xen/block_stats.c
@@ -118,6 +118,18 @@ read_bd_stat (int device, int domid, const char *str)
int64_t r;
snprintf (path, sizeof path,
+ "/sys/bus/xen-backend/devices/vbd-%d-%d/statistics/%s",
+ domid, device, str);
+ r = read_stat (path);
+ if (r >= 0) return r;
+
+ snprintf (path, sizeof path,
+ "/sys/bus/xen-backend/devices/tap-%d-%d/statistics/%s",
+ domid, device, str);
+ r = read_stat (path);
+ if (r >= 0) return r;
+
+ snprintf (path, sizeof path,
"/sys/devices/xen-backend/vbd-%d-%d/statistics/%s",
domid, device, str);
r = read_stat (path);
--
1.7.1
--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list