dm-userspace wiki page

dm-userspace wiki page

[Dan Smith]

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Hi All,

I've put up a page on the XenSource wiki detailing my progress with
dm-userspace, towards the goal of providing flexible multi-format CoW
support for Linux and Xen:

  http://wiki.xensource.com/xenwiki/DmUserspace

Currently, the code has a few bugs that I'm working to get cleaned up,
but it runs reasonably well enough for basic testing.  Any help,
testing, feeback, etc would be appreciated.

-- 
Dan Smith
IBM Linux Technology Center
Open Hypervisor Team
email: danms@us.ibm.com

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Re: dm-userspace wiki page

[Anthony Liguori]

Sweet!

Any estimate on how long much work is left until you could use this to 
support COW devices within Xen?

Are there specific areas that people could help with to speed things along?

My favorite thing about QEMU is snapshotting.  I've xm destroy'd a 
domain more than a few times and hosed things up.  I'd love to have 
snapshot support within Xen.

Regards,

Anthony Liguori

Dan Smith wrote:
> Hi All,
>
> I've put up a page on the XenSource wiki detailing my progress with
> dm-userspace, towards the goal of providing flexible multi-format CoW
> support for Linux and Xen:
>
>   http://wiki.xensource.com/xenwiki/DmUserspace
>
> Currently, the code has a few bugs that I'm working to get cleaned up,
> but it runs reasonably well enough for basic testing.  Any help,
> testing, feeback, etc would be appreciated.
>
>   
> ------------------------------------------------------------------------
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>   

Re: dm-userspace wiki page

[Dan Smith]

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AL> Sweet!  Any estimate on how long much work is left until you could
AL> use this to support COW devices within Xen?

I'm very close.  Right now, I'm working out some race conditions and
locking issues in the kernel module that usually cause problems during
stress testing.

AL> Are there specific areas that people could help with to speed
AL> things along?

Well, testing it and letting me know what does and doesn't work would
definitely be helpful.  Right now, the included testsuite runs fine
for me on vanilla kernels, but deadlocks on xen kernels.  I've heard
the opposite from someone else, so feedback on varied hardware and
configurations would good :)

-- 
Dan Smith
IBM Linux Technology Center
Open Hypervisor Team
email: danms@us.ibm.com

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