Re: [PATCH] try to find out which cluster allocated in qcow2

[Kevin Wolf]

Am 21.09.2022 um 09:57 hat songlinfeng geschrieben:
> In our project,we want to full backup a disk only allocated area,but
> qmp block-dity-block-add can create a bitmap with all zero,so we can't
> find out which cluster is allocated.in qcow2,I think l2_table can help
> me find out which cluster should be backup.
> 
> Signed-off-by: songlinfeng <slf553@126.com>

You're just adding a new function without any callers. This would be
dead code. We don't generally commit dead code except as part of a
series where a later patch makes use of it.

Either way, since you just seem to print allocation status to stdout,
maybe 'qemu-img map' is actually the right tool for what you are
trying to do?

Kevin