Re: [libvirt-users] Reintroduce "allocate entire disk" checkbox on virt-manager

Il 26-06-2018 23:49 Cole Robinson ha scritto: I can not force this decision, obviously. However, let me recap why I found it important to have the "allocate disk now" checkbox: - RAW files, even sparse one, are faster than Qcow2 files in the long run (ie: when block allocation is >8 GB); - Qcow2 snapshots have significant gotchas (ie: the guest is suspended during the snapshot), while using RAW files will at least prevent using virt-manager snapshot feature without thinking; - on CoW filesystems, using Qcow2 files will means *double* CoW with a) reduced performance and b) more wear on SSDs; - on filesystems not supporting fallocate, libvirtd reverts to "write zeroes to the entire file) which is both a) very slow and b) detrimental to SSDs life; - most other virtualization platform (old virt-manager and current oVirt included) split the choice of file format from the allocation policy. I 100% agree that, using the custom disk creation mask, what I ask it entirely possible with virt-manager today. However, it would be *very* handy to have the checkbox back in the VM wizard itself. Would opening a BZ ticket at least reopen the possibility to reconsider that decision? Thanks anyway. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti(a)assyoma.it - info(a)assyoma.it GPG public key ID: FF5F32A8