Re: [Qemu-devel] [question] updating the base image for all clones which havebeen running for months

["Zhang Haoyu" <zhanghy@sangfor.com>]

>> Hi, all
>> 
>> I used base image A to clone so many vm, 
>> after running for months, each vm has its own private applications and data,
>> which maybe different from each other.
>> Now, I want to install some applications for all of the clones,
>> what should I do?
>
>Install the applications on each clone separately, or use some other
>method to make it available (like installing on a shared network
>resource).
>
Could you detail "installing on a shared network resource"?

Thanks,
Zhang Haoyu
>> Can I rebase image A to B which have the applications to be installed,
>> then change the base image to B for all clones?
>
>The problem is that rebase works on the block level, not on the file
>system level. 
Yes, this is the point.

>Changing the backing file won't produce a correctly
>working guest, it causes file system corruption.
>
>Kevin