Il 15/11/2012 17:46, Charles Arnold ha scritto: >>> We don't use qemu's VHD driver in XenServer. Instead, we use blktap2 >>> >> to create a block device in dom0 serving the VHD file in question, >>> >> and have qemu open that block device instead of the VHD file itself. >> > >> > Yes, the question is how you handle disks bigger than 127GB, so that >> > QEMU can do the same. >> > > In analyzing a 160 GB VHD fixed disk image created on Windows 2008 R2, it > appears that > MS is also ignoring the CHS values in the footer geometry field in whatever > driver they use for accessing the image. The CHS values are set at > 65535,16,255 > which obviously doesn't represent an image size of 160 GB.
Thanks, this would have been useful in the commit message. The patch looks good, Reviewed-by: Paolo Bonzini <pbonz...@redhat.com> Paolo > This patch only extends the existing qemu driver to allow a larger image by > allowing > more heads. On real hardware, only 4 bits would be allowed for heads but we > don't > have that restriction in qemu.
