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Re: [Xen-users] Remus dom0 network buffering
Here my lsmod,
#lsmod Module Size Used by xt_tcpudp 12603 1
xt_physdev 12587 4 iptable_filter 12810 1 ip_tables 27473 1 iptable_filter x_tables 29846 4 xt_tcpudp,xt_physdev,iptable_filter,ip_tables
drbd 303888 4 blktap 25553 0 xen_pciback 48131 0 xen_netback 27854 0 [permanent] xen_blkback 23363 0 [permanent]
xen_gntalloc 13321 0 xen_gntdev 17676 1 xen_evtchn 13172 2 xenfs 18311 1 bridge 90989 0 stp 12931 1 bridge
dm_multipath 23230 0 radeon 804372 2 joydev 17693 0 ttm 76949 1 radeon drm_kms_helper 46978 1 radeon
drm 242038 4 radeon,ttm,drm_kms_helper i2c_algo_bit 13423 1 radeon bnep 18281 2 parport_pc 32866 0 shpchp 37277 0
bluetooth 180104 7 bnep ppdev 17113 0 mac_hid 13253 0 e752x_edac 18564 0 edac_core 53746 3 e752x_edac
ifb 12896 0 act_mirred 13038 0 cls_u32 17060 0 cls_tcindex 13058 0 cls_basic 12946 0 sch_ingress 12866 0
sch_prio 13231 0 sch_plug 12654 0 lp 17799 0 parport 46562 3 parport_pc,ppdev,lp dm_snapshot 39031 3
usbhid 47199 0 hid 99559 1 usbhid usb_storage 49198 0 mptspi 22921 21 mptscsih 44882 1 mptspi
mptbase 103162 2 mptspi,mptscsih tg3 152032 0
Regards,
Agya
On Thu, Feb 28, 2013 at 12:29 PM, agya naila <agya.naila@xxxxxxxxx> wrote:
Hi Andrew and Shiram,
I am keep trying this setting using my machine that I mention earlier in this email thread.
I have using remus with network buffering and no network buffering.
with no network buffering #remus --no-net <vm> <backup target>
with network buffering #remus <vm> <backup target>
However, when I observed the jitter graph result of my data it seem there is no buffering impact on my traffic flow, enclosed both the graph result. I only observed RTP packet and observed the jitter. What I could understand the graph with network protection will doesn't have flow until x time when the buffer released, in this case default value 100ms. Y axis is time and X axis is jitter.
Both of command above running without error except suspend event channel issue that we discussed earlier. Please suggest.
Regards,
Agya
On Wed, Feb 20, 2013 at 1:13 PM, agya naila <agya.naila@xxxxxxxxx> wrote:
Aha, sorry to mix it :), its clear now.
Regards,
Agya On Wed, Feb 20, 2013 at 1:01 PM, Andrew Eross <eross@xxxxxxxxxxxx> wrote:
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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