[sheepdog-users] object cache questions

MORITA Kazutaka morita.kazutaka at lab.ntt.co.jp
Mon Feb 3 06:38:34 CET 2014

At Sun, 2 Feb 2014 10:53:36 +0100,
Valerio Pachera wrote:
> 2014-02-01 Maxim Terletskiy <terletskiy at emu.ru>:
> > Now I'm curious about object cache failover. What happen if volume with
> > cache will fail? Will sheep and VMs live or will they die?
> >
> I'm also curious.
> I think it's not handled as of now.
> It would be good that, in case of I/O error from the cache device, sheep
> disables cache (like a node md unplug).

I think VMs can survive.  After the device fails, the server will
become a gateway node.  The VMs can still access to their data on
other storage nodes.



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