It looks like this is a blend of the device, and the OS, plus constraints on ISO9660 filesystems. Specifically their internal block size is 2K, where as the block device driver could not support less than 4k.
The stock/generic difference here seems to be what the block device driver supports.
I've discussed this with @stevebaker and the consensus is basically, attempt to access, if it fails, re-pave it with a different filesystem type. That should at least get the user to a working node.
It looks like this is a blend of the device, and the OS, plus constraints on ISO9660 filesystems. Specifically their internal block size is 2K, where as the block device driver could not support less than 4k.
The stock/generic difference here seems to be what the block device driver supports.
I've discussed this with @stevebaker and the consensus is basically, attempt to access, if it fails, re-pave it with a different filesystem type. That should at least get the user to a working node.