https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/message/TPSPSMRWA5ZFV4SFVKIW7CCIKD5OAW6P/
Re: [Libguestfs] virt-sparsify failed (was: [oVirt Jenkins]...
libguestfsvirtsparsifyfailedjenkins
https://www.rdocumentation.org/packages/psychmeta/versions/2.7.0/topics/sparsify_simdat_r
sparsify_simdat_r function - RDocumentation
sparsifyfunction