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Date: Mon, 23 Feb 2015 10:38:06 +0000
From: Stefan Hajnoczi <stefanha@gmail.com>
Message-ID: <20150223103806.GC27533@stefanha-thinkpad.redhat.com>
References: <1424346029-5410-1-git-send-email-dgilbert@redhat.com>
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In-Reply-To: <1424346029-5410-1-git-send-email-dgilbert@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v3 0/3] -incoming defer
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To: "Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>
Cc: quintela@redhat.com, liang.z.li@intel.com, mjt@tls.msk.ru, qemu-devel@nongnu.org, amit.shah@redhat.com, pbonzini@redhat.com


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On Thu, Feb 19, 2015 at 11:40:26AM +0000, Dr. David Alan Gilbert (git) wrot=
e:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
>=20
> This patchset provides a way of setting options on an incoming
> migration before the fd/process/socket has been created.
>=20
>    start qemu with   -incoming defer
>    <use the monitor to set whatever you need>
>    migrate_incoming theuri

Does this patch series break BDRV_O_INCOMING?

blockdev.c:blockdev_init():
  if (runstate_check(RUN_STATE_INMIGRATE)) {
      bdrv_flags |=3D BDRV_O_INCOMING;
  }

The block layer needs to know about incoming migrations to avoid
accessing or caching disk images while the source host still has them
open.

Stefan

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