diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2013-11-22 13:39:50 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-12-03 15:26:49 +0100 |
| commit | 95de6d7078b029b73708059a17cef20f332adcb7 (patch) | |
| tree | ddb611353feed44e3458c5dbe1eea53ea2b3cc10 /block | |
| parent | 97b00e285119e611f500686f32f9bccffbb9126a (diff) | |
block drivers: add discard/write_zeroes properties to bdrv_get_info implementation
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/qcow2.c | 2 | ||||
| -rw-r--r-- | block/qed.c | 2 | ||||
| -rw-r--r-- | block/vdi.c | 1 | ||||
| -rw-r--r-- | block/vhdx.c | 3 | ||||
| -rw-r--r-- | block/vpc.c | 1 |
5 files changed, 9 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 8e2b6c7548..41e454a2f1 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1893,6 +1893,8 @@ static coroutine_fn int qcow2_co_flush_to_os(BlockDriverState *bs) static int qcow2_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) { BDRVQcowState *s = bs->opaque; + bdi->unallocated_blocks_are_zero = true; + bdi->can_write_zeroes_with_unmap = (s->qcow_version >= 3); bdi->cluster_size = s->cluster_size; bdi->vm_state_offset = qcow2_vm_state_offset(s); return 0; diff --git a/block/qed.c b/block/qed.c index adc2736dd7..59516a5704 100644 --- a/block/qed.c +++ b/block/qed.c @@ -1475,6 +1475,8 @@ static int bdrv_qed_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) memset(bdi, 0, sizeof(*bdi)); bdi->cluster_size = s->header.cluster_size; bdi->is_dirty = s->header.features & QED_F_NEED_CHECK; + bdi->unallocated_blocks_are_zero = true; + bdi->can_write_zeroes_with_unmap = true; return 0; } diff --git a/block/vdi.c b/block/vdi.c index b6ec0020dc..2d7490f173 100644 --- a/block/vdi.c +++ b/block/vdi.c @@ -331,6 +331,7 @@ static int vdi_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) logout("\n"); bdi->cluster_size = s->block_size; bdi->vm_state_offset = 0; + bdi->unallocated_blocks_are_zero = true; return 0; } diff --git a/block/vhdx.c b/block/vhdx.c index ed6fa53b87..67bbe103a1 100644 --- a/block/vhdx.c +++ b/block/vhdx.c @@ -1049,6 +1049,9 @@ static int vhdx_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) bdi->cluster_size = s->block_size; + bdi->unallocated_blocks_are_zero = + (s->params.data_bits & VHDX_PARAMS_HAS_PARENT) == 0; + return 0; } diff --git a/block/vpc.c b/block/vpc.c index 551876fef7..1d326cbf44 100644 --- a/block/vpc.c +++ b/block/vpc.c @@ -464,6 +464,7 @@ static int vpc_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) bdi->cluster_size = s->block_size; } + bdi->unallocated_blocks_are_zero = true; return 0; } |