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>>if we want the current volume to keep its name, and the snapshot
>>volume to actually contain *that* snapshot's data, we need some sort
>>of rename dance here as well.. i.e., rename the current volume to
>>have the snapshot volume name, then snapshot it back into the
>>"current" name. not sure what the proper qmp runes would be to
>>achieve that?
I really to check that, but I would like to keep it as most atomic than
possible (avoid stream, double snapshot, and all fancy stuff just to
take a snapshot. because shit happen ^_^ , and generally it'll happen
when you'll take a snapshot with multiple disk, you'll to manage
recovery and current state of differents volumes)
Another stupid way is to use generic name for snapfile (maybe with
ctime inside the name), and create symlinks when snapshot is taken.(
qemu follow symlink and use realpaths for backing chain).
(and for lvm, it can be done with metadatas).
I'll really try to find a way with renaming volume, I'll keep you in
touch.
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