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Re: [Qemu-devel] [PATCH 02/17] QAPI: introduce magration capability unix


From: Lei Li
Subject: Re: [Qemu-devel] [PATCH 02/17] QAPI: introduce magration capability unix_page_flipping
Date: Fri, 25 Oct 2013 12:11:05 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0

On 10/24/2013 09:52 PM, Paolo Bonzini wrote:
Il 22/10/2013 04:25, Lei Li ha scritto:
+# @unix-page-flipping: If enabled, QEMU will support localhost migration. This
+#          feature allows live upgrade of a running QEMU instance by doing 
localhost
+#          migration with page flipping. It requires the source and destination
+#          are both on localhost. Disabled by default. (since 1.7)
+#
If enabled, QEMU can optimize migration when the destination is a QEMU
process that runs on the same host as the source (as is the case for
live upgrade).  If the migration transport is a Unix socket, QEMU will
flip RAM pages directly to the destination, so that memory is only
allocated twice for the source and destination processes. Disabled by
default. (since 1.8)

I will update with this in next version, thanks.

Paolo



--
Lei




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