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Re: [Xen-tools] [BUNDLE] Change transaction semantics, implementation
| To: | Rusty Russell <rusty@xxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-tools] [BUNDLE] Change transaction semantics, implementation |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Wed, 21 Sep 2005 10:46:02 +0100 |
| Cc: | Xen Tools <xen-tools@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 21 Sep 2005 09:38:43 +0000 |
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On 21 Sep 2005, at 07:07, Rusty Russell wrote: Previously we used alock to implement transactions, with deadlock protection by breaking the lock after one second and returning ETIMEDOUT. Unfortunately, the storewas so slow that we were seeing this (and treating it as a soft error, which makes it worse, risking livelock), and Christian pointed out that this model is also flawed in theory: domains can be paused for infiniteduration. So, transaction_end can now fail with EAGAIN at any time: youhave to loop. This makes me very happy. :-) -- Keir _______________________________________________ Xen-tools mailing list Xen-tools@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-tools |
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