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Re: [Xen-devel] Live migration fails under heavy network use

On Tue, Feb 20, 2007 at 10:38:47PM -0000, Ian Pratt wrote:

> These guests are using rx-flip rather than rx-copy, right?

Solaris is, and presumably FC6 too.

> This has certainly worked reliably in the past (e.g. 3.0.3), but is now

I forget to mention that this is 3.0.4-based.

> The freeing in-use page messages may be unrelated to the actual problem
> -- AFAIK that's a relatively new printk that could occur benignly during
> a live migrate of an rx-flip guest.

We're failing here:

[2007-02-20 13:39:50 xend 100401] INFO (XendCheckpoint:247) Saving memory 
pages: iter 2   0%ERROR Internal error: Error when writing to state file (5) 
(errno 14)
[2007-02-20 13:39:50 xend 100401] INFO (XendCheckpoint:247) Save exit rc=1
[2007-02-20 13:39:50 xend 100401] ERROR (XendCheckpoint:111) Save failed on 
domain fedora64 (2).

1049                     /* We have a normal page: just write it directly. */
1050                     if (ratewrite(io_fd, spage, PAGE_SIZE) != PAGE_SIZE) {
1051                         ERROR("Error when writing to state file (5)"

IOW, we're faulting (EFAULT) on the domain's MFN due to the above error.


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