Re: [Qemu-devel] Help: Convert HDD to QCOW2 img

[Stefan Hajnoczi]

On Mon, Dec 1, 2014 at 9:40 AM, Halsey Pian <address@hidden> wrote:

Please keep address@hidden CCed so the discussion stays on the
mailing list.  I have added it back.

> Hi Stefan, not know if there is similar module, currently I have not seen it. 
> If yes, please forgive me.  And for the program if it
> is unique,  there should be some policies for involving QEMU team, right? 
> Thanks.

QEMU does not have something directly equivalent to VMware's SDK for storage.

But there is a very powerful API called libguestfs.  Maybe it does
what you want:
http://libguestfs.org/

libvirt has APIs for snapshotting and managing storage:
http://libvirt.org/html/libvirt-libvirt-storage.html

QEMU's qemu-img supports JSON output to make it easy to parse.
qemu-nbd can be used for read-write access.

There was an attempt to create something called libqblock but the work
was never completed.  I guess your approach is similar:
https://lists.gnu.org/archive/html/qemu-devel/2013-02/msg02356.html

Stefan