Re: [Xen-devel] unpredictable Xen crash w NetBSD 5.0.2(XEN3PAE_DOMU)

[å <sukinull@xxxxxxxxx>]

Dear:
Finally, I downgrade Xen 4.0 to 3.4.2
And it stable, no more crash.

As Manuel Bouyer said, I believe it should be a bug in Xen4.0.
If I get more time, I'll try to find out what's the cause.

Thank you, all.

Angelo Liaw

2010/9/25 Jean-Yves Migeon <jym@xxxxxxxxxx>:
> On 25.09.2010 07:24, å wrote:
>> Dear all:
>>
>> I'm sorry I crossmail.
>>
>> I try setup aoe-vblade server on netbsd 5.0.2(domU)
>> and I try to do some stress test with
>> for i in {65536}; do dd if=/dev/zero of=/dev/etherd/e?.? bs=4K;done
>> on a Linux box
>> Two Xen dom0 configurations I use:
>> 1. 32bits SuSE Enterprise Linux 11sp1 2.6.32.12-0.7-xen with 32bits
>> Xen 4.0.0_21091_04-0.2.6
>> 2. 64bits Gentoo 2.6.32-xen-r1 with 64bits Xen 4.0.0
>> The NIC is RTL-8169 on board
>>
>> After 20~40mins later, whole system (include dom0 and Xen) will crash
>> and reboot.
>> xm dmesg
>> dmesg
>> system message log
>> xend.log
>> console
>> output nothing at crash
>>
>> However if I replace NetBSD with FreeBSD 8.0p2 and SuSE JeOS 11.3
>> the stress test is stable (~6hours).
>>
>> Can anyone give me sugguestions to figure out what's the problem?
>
> Only suggestions to isolate the problem first, sorry :/
>
> I occasionally encountered weird reboots, due to (virtual) ethernet
> problems. They were all memory related, under reasonable load in dom0,
> with pages bouncing back and forth between dom0 and domU.
>
> What I would try (first) is to keep the NetBSD (domU, correct?) running,
> but comment out the vif line in the associated xmdomain.cfg file, or
> detach it, before doing your stress tests.
NetBSD works fine and lives long with/without vif and xbd, under
normal operating ^^
>
> I'd like to see your network setup in dom0 (brctl + ifconfig), if it's
> possible, too.
>
It's default bridge setting from SLES and Xen
It would be like this
brectl show
bridge name     bridge id               STP enabled     interfaces
br0             8000.001d7d004f19       no              eth0
                                                        vif6.0

ifconfig
br0       Link encap:Ethernet  HWaddr 00:1D:7D:00:4F:19
          inet addr:140.112.90.52  Bcast:140.112.90.255  Mask:255.255.255.0
          inet6 addr: 2001:288:1001:28:21d:7dff:fe00:4f19/64 Scope:Global
          inet6 addr: fe80::21d:7dff:fe00:4f19/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:103545441 errors:0 dropped:0 overruns:0 frame:0
          TX packets:91095087 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1610450951 (1535.8 Mb)  TX bytes:3374297172 (3217.9 Mb)

eth0      Link encap:Ethernet  HWaddr 00:1D:7D:00:4F:19
          inet6 addr: fe80::21d:7dff:fe00:4f19/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:104136292 errors:0 dropped:0 overruns:0 frame:0
          TX packets:91107012 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3199000667 (3050.8 Mb)  TX bytes:3379922283 (3223.3 Mb)
          Interrupt:179 Base address:0x8000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:6839 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6839 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:137634 (134.4 Kb)  TX bytes:137634 (134.4 Kb)

vif6.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:20 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3627360 errors:0 dropped:29 overruns:0 carrier:0
          collisions:0 txqueuelen:32
          RX bytes:2656 (2.5 Kb)  TX bytes:342575888 (326.7 Mb)

However, as my downgrade test, I think it's Xen4.0's problem. :P
Thank you
> --
> Jean-Yves Migeon
> jym@xxxxxxxxxx
>
>
>
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