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Re: [Qemu-devel] [Question] dump memory when host pci device is used by
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest |
Date: |
Mon, 10 Oct 2011 08:52:08 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2011-10-10 04:21, Wen Congyang wrote:
> At 10/09/2011 06:23 PM, Richard W.M. Jones Write:
>> On Sun, Oct 09, 2011 at 10:49:57AM +0200, Jan Kiszka wrote:
>>> As explained in the other replies: It is way more future-proof to use an
>>> interface for this which was designed for it (remote gdb) instead of
>>> artificially relaxing reasonable constraints of the migration mechanism
>>> plus having to follow that format with the post-processing tool.
>>
>> Any interface that isn't "get this information off my production
>> server *now*" so that I can get the server restarted, and send it to
>> an expert to analyse -- is a poor interface, whether it was designed
>> like that or not. Perhaps we don't have the right interface at all,
>> but remote gdb is not it.
>
> What about the following idea?
>
> Introduce a new monitor command named dump, and this command accepts a
> filename.
> We can use almost all migration's code. We use this command to dump guest's
> memory, so there is no need to check whether the guest has a unmigratable
> device.
I do not want to reject this proposal categorically, but I would like to
see the gdb path fail /wrt essential requirements first. So far I don't
see it would.
Jan
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- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, (continued)
Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Richard W.M. Jones, 2011/10/08
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/09
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Richard W.M. Jones, 2011/10/09
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/09
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/09
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest,
Jan Kiszka <=
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/10
- Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Wen Congyang, 2011/10/10
Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Alexander Graf, 2011/10/10
Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Jan Kiszka, 2011/10/10
Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest, Daniel P. Berrange, 2011/10/10