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xen-devel
Re: [Xen-devel] Domain saving and filesystem corruption
Keir Fraser wrote:
On 25 Jun 2006, at 01:32, Tracy R Reed wrote:
I mentioned this to someone on the IRC channel and they said "That is
documented behavior." Unfortunately that doesn't bring back my data. It
wasn't documented when I started using Xen and I can't possibly keep up
on everything written about Xen in the meantime.
I'm not sure if the behaviour is documented, but it certainly isn't
new. Save/restore has always behaved like that -- a filesystem should
be considered 'locked down' by a guest except when the guest OS is
shut down cleanly. No interlock is enforced or metadata maintained for
this in open source tools.
You really ought to avoid save/restore/migrate when not using network or
checkpointable storage. You will almost certainly eventually get some
sort of corruption.
I didn't realize xend actually tries to save domains on shutdown. Seems
like a bad idea to me. Is this correct? Is this only for domains
started with /etc/init.d/xendomains?
Regards,
Anthony Liguori
-- Keir
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