Ubuntu
libvirt package

  1. Bug #1847105
  2. Comment #16

Comment 16 for bug 1847105

Revision history for this message
Christian Ehrhardt  (paelzer) wrote :

ZFS has https://github.com/zfsonlinux/zfs/issues/326
Which as TL;DR: fallocate is only supported with certain flags, and not really matches the ZFS COW design. That might explain the slowness, as the fallback is to write zeros.