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| author | Radoslav Gerganov <rgerganov@vmware.com> | 2015-09-10 10:53:14 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-09-14 16:51:37 +0200 |
| commit | 3efffc3292d94271a15b1606b4a56adf6c6f04ed (patch) | |
| tree | 4aeb3c382ee9739db8ee9eb595ea537ca44583db /block/vmdk.c | |
| parent | 097b500c2dff7addfcd5f4c8a111f6bfd0cb3977 (diff) | |
| download | qemu-3efffc3292d94271a15b1606b4a56adf6c6f04ed.zip qemu-3efffc3292d94271a15b1606b4a56adf6c6f04ed.tar.gz qemu-3efffc3292d94271a15b1606b4a56adf6c6f04ed.tar.bz2 | |
vmdk: Fix next_cluster_sector for compressed write
When the VMDK is streamOptimized (or compressed), the
next_cluster_sector must not be incremented by a fixed number of
sectors. Instead of this, it must be rounded up to the next consecutive
sector. Fixing this results in much smaller compressed images.
Signed-off-by: Radoslav Gerganov <rgerganov@vmware.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/vmdk.c')
| -rw-r--r-- | block/vmdk.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index 7bdc3d0..be0d640 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1324,8 +1324,12 @@ static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, write_end_sector = DIV_ROUND_UP(write_offset + write_len, BDRV_SECTOR_SIZE); - extent->next_cluster_sector = MAX(extent->next_cluster_sector, - write_end_sector); + if (extent->compressed) { + extent->next_cluster_sector = write_end_sector; + } else { + extent->next_cluster_sector = MAX(extent->next_cluster_sector, + write_end_sector); + } if (ret != write_len) { ret = ret < 0 ? ret : -EIO; |