Re: [Xen-devel] backport requests for 4.x-testing

[Teck Choon Giam <giamteckchoon@xxxxxxxxx>]

On Thu, Mar 29, 2012 at 7:32 PM, Teck Choon Giam
<giamteckchoon@xxxxxxxxx> wrote:
> On Thu, Mar 29, 2012 at 5:22 PM, Keir Fraser <keir@xxxxxxx> wrote:
>> On 24/03/2012 18:27, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx> wrote:
>>
>>> On Tue, Mar 06, 2012 at 11:04:13AM +0000, Andrew Cooper wrote:
>>>> On 06/03/12 10:13, Jan Beulich wrote:
>>>>> For a (hopefully soon) upcoming 4.1.3 and 4.0.4, may I ask to consider
>>>>> the following changesets from -unstable for backporting:
>>>
>>> And also these:
>>> 24140 tools: xend: tolerate empty state/*.xml
>>> 23412 libxc: xc_domain_set_memory_map, xc_get_machine_memory_map (x86, amd64
>>> only)
>>> 23632 libxc: Squash xc_e820.h (and delete) into xenctrl.h
>>> 23225 x86: make the pv-only e820 array be dynamic.
>>> 23426 libxl: Add support for passing in the host's E820 for PCI passthrough
>>> 23428 libxl: Add 'e820_host' option to config file.
>>> 23427 libxl: Convert E820_UNUSABLE and E820_RAM to E820_UNUSABLE as
>>> appropriate.
>>> 24013 x86,hvm: enable VCPUOP_register_vcpu_info op in hvm hypercall
>>
>> Applied 23225 and 24013. The other, toolstack-related, patches I will leave
>> for a tools maintainer to ack or apply.
>
> With the two backport patches committed in xen-4.1-testing (changeset
> 23271:13741fd6253b), xl list or xl create domU will cause 100% CPU and
> stuck for couple minutes with high load average and lastly crash the
> server.  Please consider to revert these two commits as I am not sure
> which one is responsible for such crash.

Sorry, I shall be more clear about steps to reproduce:

xl list is fine as long I didn't start any domU after reboot.

If I xl create hvmdomU.cfg then it will overload the server and xl
list will stuck as well... meaning once you issue the first xl create
hvmdomU.cfg (starting first domU using xl) then xl list will stuck as
well.  Last known working changeset for xen-4.1-testing is
23269:d67e4d12723f.

Thanks.

Kindest regards,
Giam Teck Choon

>
> # top -c
>
> top - 19:30:54 up 6 min,  4 users,  load average: 9.16, 4.34, 1.76
> Tasks: 134 total,   4 running, 130 sleeping,   0 stopped,   0 zombie
> Cpu(s):  0.1%us,  0.2%sy,  0.0%ni, 98.8%id,  0.2%wa,  0.0%hi,  0.0%si,  0.6%st
> Mem:    355216k total,   179132k used,   176084k free,    14580k buffers
> Swap:  2120568k total,        0k used,  2120568k free,    43896k cached
>
>  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>  2856 root      20   0 31832 1416 1008 R 99.0  0.4   5:52.98 xl create
> /etc/xen/example-hvm-domU.cfg
>    1 root      20   0 19368 1512 1220 S  0.0  0.4   0:00.35
> /sbin/init
>
>
> Thanks.
>
> Kindest regards,
> Giam Teck Choon
>
>
>>
>>  -- Keir
>>
>>> which I've back-ported to 4.1 (please see attachments)
>>>
>>
>>
>>
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>> http://lists.xen.org/xen-devel

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