On 08.10.2018 19:46, John Baldwin wrote: > This needs a way to be overridden. If you have a machine installed with a > layout created prior to this change (e.g. a zpool mirror or RAID or some > other mirror or RAID), you can no longer create a matching partition since > the starting sector is now always 40 instead of 34 and the partition size > won't match. Also, while we may want to create sane layouts by default, we > should probably always provide a way to create less-sane layouts that are > still conformant to the spec. I do wonder if this kind of default > preference shouldn't belong in the userspace gpart tool rather than the > kernel and the kernel should create any compliant layout as requested by > userland instead. > > jpaetzel@ just ran into this case where he can't replace a failed disk in a > system running 12 that was first formatted on 10, so it's not academic.
As a workaround you can try to copy first 34 sectors from old disk to new using dd(1). And then use `gpart recover`. I think this should work. -- WBR, Andrey V. Elsukov
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