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authorShriram Rajagopalan <rshriram@cs.ubc.ca>2011-04-08 16:49:25 +0100
committerShriram Rajagopalan <rshriram@cs.ubc.ca>2011-04-08 16:49:25 +0100
commit5bb2e121f00edec606c077b15c3bb721cc47bc41 (patch)
tree8c81a40a307d205ebeb1b7617a5963ee03bb6884 /tools/python
parentd732509e34bc6278ec2d050808f8de15e5872c4d (diff)
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remus: blackhole replication target
The new --null option allows one to test and play with just the memory checkpointing and network buffering aspect of remus, without the need for a second host. The disk is not replicated. All replication data is sent to /dev/null. This option is pretty handy when a user wants to see the page churn for his workload or observe the latency hit though the latter will not be accurate. Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Diffstat (limited to 'tools/python')
-rw-r--r--tools/python/xen/remus/save.py6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/python/xen/remus/save.py b/tools/python/xen/remus/save.py
index 9858aec571..0c86eeb55f 100644
--- a/tools/python/xen/remus/save.py
+++ b/tools/python/xen/remus/save.py
@@ -95,6 +95,12 @@ class MigrationSocket(_proxy):
self.sock = sock
super(MigrationSocket, self).__init__(fd)
+class NullSocket(_proxy):
+ def __init__(self, address):
+ filedesc = os.open('/dev/null', 0666)
+ fd = os.fdopen(filedesc, 'w+')
+ super(NullSocket, self).__init__(fd)
+
class Keepalive(object):
"Call a keepalive method at intervals"
def __init__(self, method, interval=0.1):