jc...@redhat.com writes: > This adds the VHDX format to the qemu-iotests format, and adds > a read test. The test reads from an existing sample image, that > was created with Hyper-V under Windwos Server 2012. > > The image file is a 1GB dynamic image, with 32MB blocks. > > The pattern 0xa5 exists from 0MB-33MB (past a block size boundary) > > The pattern 0x96 exists from 33MB-66MB (past another block boundary, > and leaving a partial blank block) > > From 66MB-1024MB, all reads should return 0. > > Although 1GB dynamic image with 66MB of data, the bzip2'ed image > file size is only 874 bytes.
I take it there is additional meta-data in there generated by Windows Server itself? Otherwise I would be tempted to write a tool to generate the image on demand so it could be used to trigger other edge cases when found. Having said that 874 bytes certainly isn't to heavy a burden for the repository ;-) I'm currently pondering what the best way of supporting system images (i.e. kernel+rootfs) would be to make system regression testing easier. Unfortunately those images would be far too large to carry in the repo although there may be some sub-module annex type thing I could try. -- Alex Bennée