Re: [Qemu-devel] CoW image commit+shrink(= make_empty) support

2012-06-09 Thread Taisuke Yamada
>> This split-image configration is done to keep VM I/Os on a SSD > > This is an interesting use case that I wasn't aware of yet. So you're > not really interested in a snapshot here, but what you're trying to do > is using the SSD as some sort of a cache, right? Right. By splitting, not only I ca

[Qemu-devel] CoW image commit+shrink(= make_empty) support

2012-06-07 Thread Taisuke Yamada
I attended Paolo Bonzini's qemu session ("Live Disk Operations: Juggling Data and Trying to go Unnoticed") in LinuxCon Japan, and he adviced me to post the bits I have regarding my question on qemu's support on shrinking CoW image. Here's my problem description. I recently designed a experimenta