[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH] Fix xm save timeout with paused domains

  • To: John Levon <levon@xxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir@xxxxxxxxxxxxx>
  • Date: Tue, 08 May 2007 17:26:50 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 08 May 2007 09:25:27 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AceRja4P7LKGsP2AEduQdAAX8io7RQ==
  • Thread-topic: [Xen-devel] [PATCH] Fix xm save timeout with paused domains

On 8/5/07 17:25, "John Levon" <levon@xxxxxxxxxxxxxxxxx> wrote:

>> How about just not pausing a domain that you're going to save?
> This doesn't work when you're doing tight save/restore / migration
> loops, where the unpausing happens after plugging virtual devices for
> the new domain. This can cause the timer to expire before we unpause the
> domain and give it a chance to update its frame list entry.

Hmm.. Perhaps 'xm restore/migrate' shouldn't return until the new domain is
actually running. Or (probably easier) xend should hold save requests
pending until the domain concerned is unpaused?

 -- Keir

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.