Re: [Qemu-devel] could i using qemu-img covert && rebase -u to do qcow2 rollback?

[Huan Zhang]

Hi,

Could you give me some help?

Thanks very much.

Best Regards.

2015-12-30 19:31 GMT+08:00 Huan Zhang <address@hidden>:

Hi,

We are finding a way to do rollback for qcow2 in production environment,

But we can't ensure the below way will work well, and user data are safe.

for example,

snap0.qcow2 -> snap1.qcow2 ->snap2.qcow2 -> active.qcow2

rollback to snap1 using convert && rebase -u:

1. qemu-img convert -O qcow2 snap1.qcow2 rollback.qcow2

2. qemu-img -u -b snap2.qcow2 rollback.qcow2

Test pass with data.  But in theory, could someone give me a positive answer?

Appreciate to get your reply!

Best Regards.

Huan Zhang.