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| author | Fam Zheng <famz@redhat.com> | 2014-05-06 21:08:45 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-05-09 13:32:16 +0200 |
| commit | 74fe188cd1a27a5565787152d8620f8b8d04c4f9 (patch) | |
| tree | d3bf49aba27216eee388e3fc43e4de87823552ad | |
| parent | ba0ad89e2c3316ce26ca6576a3c5051f91bfc0fe (diff) | |
| download | qemu-74fe188cd1a27a5565787152d8620f8b8d04c4f9.tar.gz qemu-74fe188cd1a27a5565787152d8620f8b8d04c4f9.tar.bz2 qemu-74fe188cd1a27a5565787152d8620f8b8d04c4f9.zip | |
vmdk: Implement .bdrv_get_info()
This will return cluster_size and needs_compressed_writes to caller, if all the
extents have the same value (or there's only one extent). Otherwise return
-ENOTSUP.
cluster_size is only reported for sparse formats.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | block/vmdk.c | 21 | ||||
| -rw-r--r-- | tests/qemu-iotests/059.out | 1 |
2 files changed, 22 insertions, 0 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index 057c3f1fcd..480ea37d7c 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -2076,6 +2076,26 @@ static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs) return spec_info; } +static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) +{ + int i; + BDRVVmdkState *s = bs->opaque; + assert(s->num_extents); + bdi->needs_compressed_writes = s->extents[0].compressed; + if (!s->extents[0].flat) { + bdi->cluster_size = s->extents[0].cluster_sectors << BDRV_SECTOR_BITS; + } + /* See if we have multiple extents but they have different cases */ + for (i = 1; i < s->num_extents; i++) { + if (bdi->needs_compressed_writes != s->extents[i].compressed || + (bdi->cluster_size && bdi->cluster_size != + s->extents[i].cluster_sectors << BDRV_SECTOR_BITS)) { + return -ENOTSUP; + } + } + return 0; +} + static QEMUOptionParameter vmdk_create_options[] = { { .name = BLOCK_OPT_SIZE, @@ -2132,6 +2152,7 @@ static BlockDriver bdrv_vmdk = { .bdrv_has_zero_init = vmdk_has_zero_init, .bdrv_get_specific_info = vmdk_get_specific_info, .bdrv_refresh_limits = vmdk_refresh_limits, + .bdrv_get_info = vmdk_get_info, .create_options = vmdk_create_options, }; diff --git a/tests/qemu-iotests/059.out b/tests/qemu-iotests/059.out index 3371c867bb..14c0957126 100644 --- a/tests/qemu-iotests/059.out +++ b/tests/qemu-iotests/059.out @@ -2050,6 +2050,7 @@ qemu-img: Could not open 'TEST_DIR/t.IMGFMT': File truncated, expecting at least image: TEST_DIR/iotest-version3.IMGFMT file format: IMGFMT virtual size: 1.0G (1073741824 bytes) +cluster_size: 65536 === Testing 4TB monolithicFlat creation and IO === Formatting 'TEST_DIR/iotest-version3.IMGFMT', fmt=IMGFMT size=4398046511104 |