Re: In-kernel units for block numbers, etc ...

[mlelstv%serpens.de@localhost (Michael van Elst)]

tls%panix.com@localhost (Thor Lancelot Simon) writes:

>Yes.  CCD supports layouts that RAIDframe doesn't, ones that are more
>efficient for many real-world workloads: with CCD, it's possible to
>concatenate drives or stripe them with enormous, prime stripe units, so
>that concurrent I/O streams are highly likely to parallelize across
>multiple units.  There's no support for anything like that in RAIDframe.

stripes beyond MAXPHYS ? :)

I think ccd is important as an example for drivers from the
dark ages.


>Perhaps it's possible to do something like this using RAIDframe and LVM
>in combination, but we can't ship full LVM support because many of the
>utilities are GPL3, right?

The utilities are GPL2 and we ship all of it (but an older
version). We don't provide "full LVM" because we haven't
implemented all of it in the kernel.


-- 
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."