On 02/13/2018 07:03 AM, Max Reitz wrote:
Instead of expecting the current size to be 0, query it and allocate
only the area [current_size, offset) if preallocation is requested.

Signed-off-by: Max Reitz <mre...@redhat.com>
  block/gluster.c | 21 +++++++++++++++++++--
  1 file changed, 19 insertions(+), 2 deletions(-)

I don't have a gluster setup handy to test this, but the concept matches file-posix and the change looks reasonable.

Reviewed-by: Eric Blake <ebl...@redhat.com>

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org
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