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[Qemu-devel] Re: Live migration broken when under heavy IO
From: |
Charles Duffy |
Subject: |
[Qemu-devel] Re: Live migration broken when under heavy IO |
Date: |
Tue, 16 Jun 2009 13:19:05 -0500 |
User-agent: |
Thunderbird 2.0.0.21 (X11/20090409) |
I'm not sure if this is related, but to comment --
I'm seeing what appears to be occasional dropped I/O on non-live
migration -- that is to say, stop, migrate-to-disk, shuffle files
around, migrate-from-disk, cont. I have not yet been able to reproduce
this with cache=off.
As I understand it, the bulk of discussion in this thread is about I/O
submitted by the guest after the migration starts; as I'm stopping the
guest CPU _before_ initiating migration, there would appear to be
outstanding issues not limited to this scenario.
[qemu-kvm-0.10.5, IDE, qcow2]
[Qemu-devel] Re: Live migration broken when under heavy IO,
Charles Duffy <=