Re: [Libguestfs] virt-sparsify --inline with Parallels/Virtuozzo Ploop Images

Hi Jonathan, On Thursday, 26 September 2019 16:29:46 CEST Jonathan Wright wrote: Correct, this is because we have the following function to determine whether it is supported: https://github.com/libguestfs/libguestfs/blob/02890096d55eaee66c1e6ed34fc... In a nutshell: - raw supported with qemu >= 1.5 - qcow2 supported with qemu >= 1.6 - any other format is not supported So we check based on the version of qemu currently. This leads me to the question: how can libguestfs detect this? Ideally we would check somehow, and show the error message only when not supported. Otherwise the alternative is simply unconditionally enable discard for "parallels" disk images, although I don't know what would happen when using versions of Virtuozzo older than 7.0.11. Any Virtuozzo guy that can provide more insight? -- Pino Toscano