In case we're truncating an image opened with O_DIRECT, we might get
-EINVAL on write with unaligned buffer. In particular, when running
iotests/298 with '-nocache' we get:
qemu-io: Failed to resize underlying file: Could not write zeros for
preallocation: Invalid argument
Let's just allocate the buffer using qemu_blockalign0() instead.
Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <20260923162224.34946-1-andrey.drobyshev@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Andrey Drobyshev
971330f94f