Mailinglist Archive: opensuse-virtual (24 mails)

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Re: [opensuse-virtual] Xen live migration and xen-kmp issues
On 07/14/2011 03:54 PM, Jan Beulich wrote:
>>> Danilo Godec 07/14/11 3:45 PM >>>
>Here it goes - this particular DomU I'm (ab)using for testing is OpenSuSE 11.2 running kernel 2.6.31.14-0.6-xen #1 SMP. I copied the appropriate System.map file to my Xen server. The DomU is started with 'vcpus=2' and I manually removed one VCPU with 'xm vcpu-set DomU 1':

So in the end at the point of migration you have just one, so you only need to run xenctx against that one.

But no, I'm sorry, if all you can reproduce the problem with is an 11.2 guest, then there's nothing we can really do here, as that one has been out of support for quite a while. If you can reproduce the issue with a SLE11 SP1 or 11.4 guest, that would be something we would want analyzed (and it would probably be a good idea to enter a bug, so we can actually track the findings).

Here's the data for a 11.4 guest - kernel 2.6.37.6-0.5-xen #1 SMP, the domain is started with 'vcpus=2' and 'vcpu_avail=1':

# /usr/lib64/xen/bin/xenctx -s /root/dns2-System.map 181 0
rip: ffffffff800033aa hypercall_page+0x3aa
flags: 00001246 i z p
rsp: ffffffff807cff50
rax: 0000000000000000 rcx: ffffffff800033aa rdx: 0000000000000000
rbx: ffffffff8086e140 rsi: 0000000000000000 rdi: 0000000000000001
rbp: 0000000000000000 r8: 0000000000000000 r9: 00000000000007a8
r10: 0000000000000858 r11: 0000000000000246 r12: ffffffff807ce000
r13: ffffffff8082bd00 r14: ffffffff807ce000 r15: 0000000000000000
cs: e033 ss: e02b ds: 0000 es: 0000
fs: 0000 @ 00007f4a3ab4d700
gs: 0000 @ ffff88000f7b1000/0000000000000000
Code (instr addr ffffffff800033aa)
cc cc cc cc cc cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc


Stack:
ffffc900001fd820 00000000ffffffff ffffffff8000e4ed ffffffff807ce000
ffffffff8086e140 0000000000000000 ffffffff80005255 ffffffff8086e140
ffffffff80870d00 ffff88000f8e0d40 ffffffffffffffff 0000000000000000
ffffffff8083eb34 0000000000000000 ffffffff80870d00 0000000000000000

Call Trace:
[<ffffffff800033aa>] hypercall_page+0x3aa <--
[<ffffffff8000e4ed>] xen_idle+0x3d
[<ffffffff80005255>] cpu_idle+0x55
[<ffffffff8083eb34>] start_kernel+0x3a5



Regards, Danilo

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