[Libguestfs] New tool proposal

[Wanlong Gao]

On 05/22/2012 05:17 PM, Richard W.M. Jones wrote:

> On Tue, May 22, 2012 at 04:54:23PM +0800, Wanlong Gao wrote:
>> On 05/15/2012 04:41 PM, Richard W.M. Jones wrote:
>>
>>> On Tue, May 15, 2012 at 04:13:27PM +0800, Wanlong Gao wrote:
>>>> Hi Rich,
>>>>
>>>> We just talked about a new tool virt-diff which can diff files
>>>> between two guest, suggested by Kamezawa Hiroyuki <kamezawa.hiroyu at jp.fujitsu.com>
>>>>
>>>> things like below,
>>>> # virt-diff -Nru --guest=Guest0 --guest=Guest1 /etc/hosts
>>>>
>>>> Any thought about this?
>>>
>>> Sure, sounds like a good idea.
>>
>>
>> What do you think about how to implement the virt-diff ?
>> particularly for the recursive option of diff?
> 
> It depends what you want it to do!  I'd definitely start with
> at least some notes about exactly what you want it to do.  Files?
> Filesystems?  Metadata?  Partitions?  Windows Regsitry?
> 
> Note that you can already do some sorts of file comparison using
> 'virt-ls', ie:
> 
>   virt-ls -lR --checksum -d guest1 / > files1
>   virt-ls -lR --checksum -d guest2 / > files2
>   diff -u files1 files2


yes, I meant files.
"
quoted from Kame:
I think this kind of command to do comparison between 2 guests is required for
private cloud system. System admin can find error setting by diff.
"

So, you means we can use virt-ls to list the different files list, and then
use virt-cat to see the different between two single files?


Thanks,
Wanlong Gao

> 
> Rich.
>