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| author | Fam Zheng <famz@redhat.com> | 2016-01-25 10:26:23 +0800 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2016-02-02 17:49:34 +0100 |
| commit | 3db1d98a20262228373bb973ca62b1ab64b29af4 (patch) | |
| tree | 6566d9cb4f6bca563fb58ead2466d00debc454ac /block/vmdk.c | |
| parent | 327032ce74d0d9fbd4e18528d0f124b68bc56cea (diff) | |
| download | qemu-3db1d98a20262228373bb973ca62b1ab64b29af4.zip qemu-3db1d98a20262228373bb973ca62b1ab64b29af4.tar.gz qemu-3db1d98a20262228373bb973ca62b1ab64b29af4.tar.bz2 | |
vmdk: Fix converting to streamOptimized
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 <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/vmdk.c')
| -rw-r--r-- | block/vmdk.c | 6 |
1 files changed, 5 insertions, 1 deletions
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 |