On 09/15/10 07:45, Garrett D'Amore wrote:
On Tue, 2010-09-14 at 22:37 -0700, Mike Riley wrote:
There was a project to take the handling of partitions, and disk geometry,
completely out of sd
and impose it as a layer above it. That way the new layer would handle
knowledge of disk
layouts and provide sd with a simple starting sector, sector size, and total
sectors info to
work with. Again, it was being worked on back when I was with Sun, but I am
not sure it ever
got anywhere. I know several of the people working on it at the time are no
longer with Sun, so
my guess is that it died. Pity, because it is really needed, but it also is
fraught with the
possibility of bugs being introduced. However, sd is so full of bugs right now
I am not sure a
re-write/re-design would be any worse.
That project is basically done. The code has been moved into "cmlb",
which handles all the details of partitioning, and labeling, etc. It is
a library with functions that the target driver (sd, or cmdk, or other
similar drivers) can call.
Glad to hear it. But did they change sd, cmdk, etc. to use it yet?
I know they were dreading trying to do that and no one group at Sun wanted to take
responsibility for sd. I had to get votes of approval from at least 3 groups to get a change in
that I did to it so that larger drives could be handled. That fix was only supposed to be a
band-aid until the code was changed to eliminate the need for disk geometry in sd.
--
Mike Riley o
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