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Re: [Xen-users] Remus dom0 network buffering
Hi Agya,
This patch doesn't fix the 'suspend event channel' issue, it just fixes the crash from the first e-mail in this thread.
That discusses the suspend event channel issue.
Cheers, Andrew On Wed, Feb 20, 2013 at 8:57 AM, agya naila <agya.naila@xxxxxxxxx> wrote:
Hello All,
I am trying this patch on my machine Ubuntu 12.04 AMD64 both for Dom0 and DomU with Xen 4.2.2-pre compiling from sources also DRBD 8.3.11 but unfortunately it seem didn't work since I still got the message WARNING: suspend event channel unavailable, falling back to slow xenstore signalling.
Regards,
Agya
Hi all,
To close off on this, Shriram's patch worked great, thank you.
So Ubuntu 12.10's standard generic kernel is now working fine as a dom0 for Remus with Xen 4.1.4 (with the patch from this thread).
I wrote up my full install instructions here:
I also took a shot at a number of updates to:
And added these pages:
Feedback very welcome, a lot of that information was a bit old, so I did my best.
Cheers, Andrew
On Mon, Feb 18, 2013 at 8:26 PM, Shriram Rajagopalan <rshriram@xxxxxxxxx> wrote:
ah darn. Yes, the 3.5 kernel has sch_plug in it. Unfortunately, the
technique to initialize the sch_plug module is bit
different with the module thats already mainline. You ll have to patch
the qdisc.py python module. I ll submit the
patch to xen devel soon.
Mean while, can you try the patch below and see if it works ?
Secondly, you said you were writing a blog about how you set it up.
One of the remus users created a wiki
remusha.wikidot.com, which has a whole tutorial on how to setup remus
with Debian Squeeze. I have been under fire
lately for a host of remus issues. It would be great if you could post
your experiences on the wiki too.
(http://remusha.wikidot.com/system:join)
thanks
shriram
---
diff -r 6435f1edf24e tools/python/xen/remus/qdisc.py
--- a/tools/python/xen/remus/qdisc.py Tue Jul 17 19:23:30 2012 -0400
+++ b/tools/python/xen/remus/qdisc.py Mon Feb 18 18:25:22 2013 -0500
@@ -1,6 +1,9 @@
import socket, struct
import netlink
+import platform
+
+kernelversion = platform.platform(terse=True).split("-")[1].split(".")
qdisc_kinds = {}
@@ -150,9 +153,14 @@
TC_PLUG_RELEASE = 1
class PlugQdisc(Qdisc):
- fmt = 'I'
def __init__(self, qdict=None):
+ if int(kernelversion[0]) >= 3 and int(kernelversion[1]) >= 4:
+ self.fmt = 'iI'
+ self.limit = 10000
+ else:
+ self.fmt = 'I'
+
if not qdict:
qdict = {'kind': 'plug',
'handle': TC_H_ROOT}
@@ -161,7 +169,10 @@
self.action = "">
def pack(self):
- return struct.pack(self.fmt, self.action)
+ if int(kernelversion[0]) >= 3 and int(kernelversion[1]) >= 4:
+ return struct.pack(self.fmt, self.action, self.limit)
+ else:
+ return struct.pack(self.fmt, self.action)
def parse(self, args):
if not args:
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