Re: [Qemu-devel] hmp interface for kdump compressed format

[Christian Borntraeger <borntraeger@de.ibm.com>]

On 21/03/14 10:31, qiaonuohan@cn.fujitsu.com wrote:
[....]

>>> Another option would be to leave the current command intact, and add an
>>> independent command that wouldn't take "begin", "end", nor "paging", but
>>> would take compression format.
>>
>> Another possibility is to kill begin/length from the dump-guest-memory command.
>> HMP is not stable, so if that's useful we can do it.
> 
> AFAIK, kdump-compressed format can only be analyzed by crash-utility right
> now. ELF is big but we still need it, then begin/length will help us save
> time and space when only part of the memory is need.
> 
> IMHO, a new HMP command will be a good choice and it is more simple than
> making dump format 'stateful'. I am not so clear about HMP, but I think
> the new HMP command can be 'dump-guest-memory-with-format', and still
> base on qmp_dump_guest_memory. If you guys like it, I will send a patch
> that add this command.

Yes, please do, if you find the time.
Maybe user "dump-guest-memory-format" or whatever comes up might be a better name, though.
Thanks a lot

Christian