[Sheepdog] No redundancy with sheepdog

[MORITA Kazutaka]

At Thu, 26 Aug 2010 06:36:33 +0900,
MORITA Kazutaka wrote:
> 
> At Tue, 24 Aug 2010 16:32:45 +0100 (BST),
> James Ray wrote:
> > 
> > All,
> > 
> > Started playing with sheepdog today, I have following the
> > instructions at:
> > http://www.osrg.net/sheepdog/usage.html
> > Pulled the latest sheepdog git (last commit tag is
> > 4d4d2a928fbc098ab1cf6afdd01bcad540afe7b4)
> > 
> > I dont seem to get any redundancy in my setup, killing sheep on any one of
> > the boxes causes all IO to die. My full build details are lower down the
> > email. But here is what I do to get a failiure:
> > 
> > Started converting an debian qcow file to sheepdog like this:
> > [root at pavlov sheepdog]# qemu-img convert \
> > debian_lenny_amd64_small.qcow2 sheepdog:debian
> > 
> > While it is converting I kill sheep on a machine with kill -9 (not very
> > nice, but should be handled) and I get the following error from qemu-img:
> > 
> > I/O error
> > qemu-img: error while writing
> > 
> > The same happends if I am running a VM. On restarting sheep things don't
> > seem to get any better with all the 'collie vdi show' commands reporting:
> > 
> >    name        id    size    used  shared    creation time   vdi id
> > ------------------------------------------------------------------
> > error 11661488, 0
> > 
> > Any ideas?
> 
> 
> Thanks for your report!  It seems that Sheepdog doesn't work properly
> if the node membership changes during I/O operations are performed.  I
> want to fix these critical bugs as soon as possible.

Hi James,

Can you try the latest "next" branch?

  git://sheepdog.git.sf.net/gitroot/sheepdog/sheepdog next

It contains some fixes I sent just now.


Thanks,

Kazutaka