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RE: [Xen-devel] xm save + restore crashes Windows 2008 32-bit (4.0.2-rc2

To: "Tim Deegan" <Tim.Deegan@xxxxxxxxxx>
Subject: RE: [Xen-devel] xm save + restore crashes Windows 2008 32-bit (4.0.2-rc2-pre)
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Tue, 25 Jan 2011 22:24:23 +1100
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Thread-topic: [Xen-devel] xm save + restore crashes Windows 2008 32-bit (4.0.2-rc2-pre)
> Can you try:
>  - xl pause <domid>
>  - xen-hvmctx <domid> >before
>  - xl save <domid> save-file
>  - xl restore -p save-file
>  - xl list
>  - xen-hvmctx <new-domid> >after
>  - diff -u before after
> There should be a few differences to do with timers and TSCs but there
> might be some other smoking gun.  Of course it's possible that some
> piece of state got added that didn't get into the save/restore code at
> all.  It's also possible that some vital piece of memory isn't getting
> saved properly but that's less likely to be AMD-specific.

xl just isn't working for me. xl create doesn't seem to work with drbd,
and even when I use the /dev/ path of the disk image and make it primary
myself, xl create gives me a domain that won't boot (bug check 0x5C
HAL_INITIALIZATION_FAILED). And even when I start the domain with xm, xl
save works but xl restore won't work. First you need to specify the
config file or it complains about a missing userdata-d-<guid?).xl file
in /var/lib/xen, and even when you specify the config file it says:

Failed allocation for dom 50: 1024 extents of order 0
ERROR Internal error: Failed to allocate memory for batch.!

xm save won't work if the domu is paused. I'll see if that's just an
artificial limitation I can remove...


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