From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1MOttv-0005En-Nm for qemu-devel@nongnu.org; Thu, 09 Jul 2009 09:43:03 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1MOttr-0005Ap-6k for qemu-devel@nongnu.org; Thu, 09 Jul 2009 09:43:03 -0400 Received: from [199.232.76.173] (port=45438 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MOttq-0005Ac-OO for qemu-devel@nongnu.org; Thu, 09 Jul 2009 09:42:58 -0400 Received: from rv-out-0708.google.com ([209.85.198.241]:9818) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1MOttq-0000Hw-E5 for qemu-devel@nongnu.org; Thu, 09 Jul 2009 09:42:58 -0400 Received: by rv-out-0708.google.com with SMTP id b17so37054rvf.22 for ; Thu, 09 Jul 2009 06:42:57 -0700 (PDT) Message-ID: <4A55F3DD.3080802@codemonkey.ws> Date: Thu, 09 Jul 2009 08:42:53 -0500 From: Anthony Liguori MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH 0/3] add "core dump"-like capability References: <1247140059-5034-1-git-send-email-pbonzini@redhat.com> In-Reply-To: <1247140059-5034-1-git-send-email-pbonzini@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: qemu-devel@nongnu.org Paolo Bonzini wrote: > Unlike for example xen, KVM virtualized guests do not have a method to > generate something like a core file. While kdump could help in the > case of a crash, it does not cater for non-Linux operating systems > and does not help with dumping the state live, while the machine is > running. > Actually, you can use gdb to dump a core from a running guest. Just do: (gdb) gcore filename But really, live migration gives you all the state you need. Why not just introduce a third-party program that you could live migrate to via exec? Regards, Anthony Liguori