From: Fam Zheng <f...@redhat.com> Commit d62d9dc4b8 lifted streamOptimized images's version to 3, but we now refuse to open version 3 images read-write. We need to make streamOptimized an exception to allow converting to it. This fixes the accidentally broken iotests case 059 for the same reason.
Signed-off-by: Fam Zheng <f...@redhat.com> Signed-off-by: Kevin Wolf <kw...@redhat.com> --- block/vmdk.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/block/vmdk.c b/block/vmdk.c index 698679d..4a5850b 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -571,6 +571,7 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, VmdkExtent *extent; BDRVVmdkState *s = bs->opaque; int64_t l1_backup_offset = 0; + bool compressed; ret = bdrv_pread(file->bs, sizeof(magic), &header, sizeof(header)); if (ret < 0) { @@ -645,6 +646,8 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, header = footer.header; } + compressed = + le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; if (le32_to_cpu(header.version) > 3) { char buf[64]; snprintf(buf, sizeof(buf), "VMDK version %" PRId32, @@ -652,7 +655,8 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, error_setg(errp, QERR_UNKNOWN_BLOCK_FORMAT_FEATURE, bdrv_get_device_or_node_name(bs), "vmdk", buf); return -ENOTSUP; - } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR)) { + } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR) && + !compressed) { /* VMware KB 2064959 explains that version 3 added support for * persistent changed block tracking (CBT), and backup software can * read it as version=1 if it doesn't care about the changed area -- 1.8.3.1