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Re: [Qemu-devel] [PATCH v3 27/35] postcopy/outgoing: implement forward/b


From: Eric Blake
Subject: Re: [Qemu-devel] [PATCH v3 27/35] postcopy/outgoing: implement forward/backword prefault
Date: Thu, 01 Nov 2012 14:10:45 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121016 Thunderbird/16.0.1

On 10/30/2012 02:33 AM, Isaku Yamahata wrote:
> When page is requested, send surrounding pages are also sent.
> 
> Signed-off-by: Isaku Yamahata <address@hidden>
> ---
>  hmp-commands.hx      |   15 ++++++++-----
>  hmp.c                |    3 +++
>  migration-postcopy.c |   57 
> +++++++++++++++++++++++++++++++++++++++++++++-----
>  migration.c          |   20 ++++++++++++++++++
>  migration.h          |    2 ++
>  qapi-schema.json     |    3 ++-
>  6 files changed, 89 insertions(+), 11 deletions(-)
> 
> diff --git a/hmp-commands.hx b/hmp-commands.hx
> index b054760..5e2c77c 100644
> --- a/hmp-commands.hx
> +++ b/hmp-commands.hx
> @@ -826,26 +826,31 @@ ETEXI
>  
>      {
>          .name       = "migrate",
> -        .args_type  = "detach:-d,blk:-b,inc:-i,postcopy:-p,nobg:-n,uri:s",
> -        .params     = "[-d] [-b] [-i] [-p [-n]] uri",
> +        .args_type  = "detach:-d,blk:-b,inc:-i,postcopy:-p,nobg:-n,uri:s,"
> +                   "forward:i?,backward:i?",
> +        .params     = "[-d] [-b] [-i] [-p [-n] uri [forward] [backword]",

I don't care what we do to the 'migrate' HMP command, but for QMP...

> +++ b/qapi-schema.json
> @@ -2095,7 +2095,8 @@
>  ##
>  { 'command': 'migrate',
>    'data': {'uri': 'str', '*blk': 'bool', '*inc': 'bool', '*detach': 'bool' ,
> -           '*postcopy': 'bool', '*nobg': 'bool'} }
> +           '*postcopy': 'bool', '*nobg': 'bool',
> +           '*forward': 'int', '*backward': 'int'} }

Do we really want to be adding new options to migrate (and if so,
where's the documentation), or do we need a new monitor command similar
to migrate-set-capabilities or migrate-set-cache-size?

-- 
Eric Blake   address@hidden    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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