virt-sparsify: error: libguestfs error: discard
cannot be enabled on this
drive: qemu does not support discard for 'parallels' format files
Since Virtuozzo 7.0.11 discard is officially supported for ploop images and I've mounted them with discard and confirmed this functionality works as expected. Would it be possible to update libguestfs to be aware of this support so the --inplace flag will work?
"Native discard support in ploop enabling
automatic discard requests on all ext4 filesystems over ploop
block devices, except containers running on Virtuozzo Storage."
-- Jonathan Wright KnownHost, LLC https://www.knownhost.com