[ovirt-devel] In-place sparsify support in VDSM

[Richard W.M. Jones]

I was working on this piece of code today:

https://github.com/libguestfs/libguestfs/blob/3fb35e66272ab675bb335a7ae1b6c0299b96bd18/src/launch-direct.c#L1377-L1459

which reminded me of this email thread.  The above function in
libguestfs encodes which versions of qemu and which block drivers in
qemu have discard support.

Unfortunately it doesn't encode the NFS knowledge nor the local
drive/partition business, because it's rather hard to detect those.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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