On Wed, 30 Jan 2013, Artem Kuchin wrote:

30.01.2013 18:06, Warren Block:

GPT partitions should work, just limit it to one mirrored partition per drive.

Please, clarify what you mean here.

If only one GPT partition on a drive is mirrored with another GPT partition on another drive, head contention never comes up. There is only one mirror.

It does nearly eliminate the usefulness of GPT partitioning.

Um... and how can i do that if i have a simple mirror with two drives and want to mirror everything on them? As i understand i will have at least bootable, swap and ufs parttions on those drives, that is 3 partitions at least.

If you want to use the same drive for booting, it's possible. Create all three partitions on both drives manually. Then mirror the freebsd-ufs partition only. The contents of the freebsd-boot partition don't change often, and swap does not have to be mirrored.

Not that it's easy or convenient, but it's an option.
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