tree b16ad4431a5205398cdd584a213282590e764668
parent d8b83e37c381cf86ecd907301b7dcc65baaa0aea
author Denis V. Lunev <den@openvz.org> 1501859413 +0300
committer Kevin Wolf <kwolf@redhat.com> 1502198356 +0200

parallels: drop check that bdrv_truncate() is working

This would be actually strange and error prone. If truncate() nowadays
will fail, there is something fatally wrong. Let's check for that during
the actual work.

The only fallback case is when the file is not zero initialized. In this
case we should switch to preallocation via fallocate().

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Markus Armbruster <armbru@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>