Re: [Xen-devel] tapdisk2 segfaults with xen-unstable+linux-2.6-pvops

[Ashish Bijlani <ashish.bijlani@xxxxxxxxx>]

Hey Daniel,

Disabling msmshr worked for me. Thanks !!

- Ashish

On Thu, Feb 11, 2010 at 2:56 AM, Daniel Stodden
<daniel.stodden@xxxxxxxxxx> wrote:
>
> Hi,
>
> Disable memshr in tools/blktap2/Makefile. Find a patch next to this
> mail, unless Keir pulled it in by the time you read this.
>
> Disable CONFIG_HIGHPTE, the config you posted has it enabled.
>
> The pvops kernel wants a bunch of patches which haven't made it into
> Jeremy's tree yet. The latest version was posted here.
>
> http://lists.xensource.com/archives/html/xen-devel/2010-02/msg00331.html
>
> Let me know if this work for you. Especially if it doesn't, but I
> haven't heard about more open issues lately.
>
> Thanks,
> Daniel
>
> On Wed, 2010-02-10 at 20:45 -0500, Ashish Bijlani wrote:
>> Hi,
>>
>> I'm trying to run guest pv vm on my machine running xen-unstable
>> (xen-4.0.0-rc3.pre + linux-2.6-pvops). However, I get blktap error:
>>
>> "
>> sudo xm create -c xmexample
>> Using config file "./xmexample".
>> Error: Failed to create device.
>>     stdout: unrecognized child response
>>     stderr:
>> Check that target "/home/ashish/xen/hd.img" exists and that blktap2
>> driver installed in dom0.
>> "
>>
>> Dom0 dmesg shows:
>>
>> "
>> [ 7112.648271] blktap_sysfs_create: adding attributes for dev eb5506c0
>> [ 7112.648287] blktap_control_allocate_tap: allocated tap de87e000
>> [ 7112.651564] tapdisk2[7325]: segfault at 10 ip b763a540 sp bffd548c
>> error 4 in libpthread-2.7.so[b7633000+14000]
>> "
>>
>> tapdisk2 -n aio:/home/ashish/xen/hd.img output shows the same above segfault 
>> msg
>>
>> Any ideas what could be wrong?
>>
>> config, xmexample, and dmesg attached.
>>
>> Thanks,
>> Ashish
>
>
>

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