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由 Jeff Cody 提交于
The 0.95 VHDX spec defined PAYLOAD_BLOCK_UNMAPPED to be 5. The 1.00 VHDX spec redefines PAYLOAD_BLOCK_UNMAPPED to be 3 instead. The original value of 5 is now an undefined state in the spec, but it should be safe to treat it the same and return zeros for data read. This way, we can maintain compatibility with any images out in the wild that may have been created in accordance to the 0.95 spec. Reported-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NJeff Cody <jcody@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 8a4d2da73a8dbc04cde62bea782fc09ff84b1cf1.1418018421.git.jcody@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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