> However do remember that our current blockdevice level limitation
> is 2G (or 4G ?) worth of 512 byte blocks, that is, 1 TB (maybe 2)
> for any given block device size.
that is only because internally in the block-layer we use sectors. Eg. the
RAID code already does nothing sector-ish itself, so you can have
4G*blocksize devices with RAID, which is 16 TBytes with 4k blocks. (and
more with bigger blocks) I have not actually tried this myself :) RAID0
still relies on sectors internally [can be fixed], but RAID1/RAID5 not.
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