Re: [PATCH v3 0/3] block/vmdk: fixes for stream optimized disks

[Kevin Wolf <kwolf@redhat.com>]

Am 16.10.2026 um 14:37 hat Sanne Raymaekers geschrieben:
> The stream optimized disks produced by qemu-img did not quite adhere to
> the specification. This could trip up other software consuming these
> disks. The goal of these patches is to get the VMDKs produced by QEMU to
> better match the specification, the Virtual Disk Format 5.0 Technical
> Note.
> 
> For instance, when packaging the VMDK up in an OVA archive (a ustar
> archive containing an OVF, a manifest and a VMDK), errors occur when
> importing that OVA into VMWare Workstation. Specifically the digest in
> the manifest does not match the digest of the VMDK, because Workstation
> reads (and parses) the disk contents and then makes a digest, rather
> than making a digest of the whole VMDK file. Extra null bytes at the
> very end will trip it up, as they are ignored in the digest made by
> Workstation, but are included in the digest produced by something like
> shasum.
> 
> Note that stream optimized disks, while not adhering to the
> specification fully, are still useable by VMWare tooling, with some
> workarounds where needed. For instance, VSphere does not have the same
> issue as Workstation.
> 
> V3 cleans up some formatting and makes the commit messages clearer.
> 
> Sanne Raymaekers (3):
>   block/vmdk: align stream optimized data grains on 512 byte chunks
>   block/vmdk: skip RGD for stream optimized disks
>   block/vmdk: add eos marker for stream optimized disks

Thanks, applied to the block branch (and meanwhile merged into master as
well; somehow I missed sending this reply).

Kevin