Quoting Scott Long <[EMAIL PROTECTED]> (from Mon, 15 Oct 2007 01:47:59 -0600):
Alexander Leidinger wrote:
Quoting Poul-Henning Kamp <[EMAIL PROTECTED]> (from Sun, 14 Oct
2007 17:54:21 +0000):
listen to the various mumblings about putting RAID-controller status
under sensors framework.
What's wrong with this? Currently each RAID driver has to come up
with his own way of displaying the RAID status. It's like saying
that each network driver has to implement/display the stuff you can
see with ifconfig in its own way, instead of using the proper
network driver interface for this.
For the love of God, please don't use RAID as an example to support your
argument for the sensord framework. Representing RAID state is several
orders of magnitude more involved than representing network state.
There are also landmines in the OpenBSD bits of RAID support that are
best left out of FreeBSD, unless you like alienating vendors and risking
legal action. Leave it alone. Please. I don't care what you do with
lmsensors or cpu power settings or whatever. Leave RAID out of it.
Talking about RAID status is not talking about alienating vendors. I
don't talk about alienating vendors and I don't intent to do. You may
not be able to display a full blown RAID status with the sensors
framework, but it allows for a generic "wors/works not" or
"OK/degraded" status display in drivers we have the source for. This
is enough for status monitoring (e.g., nagios). I don't know if you
talk about the OpenBSD bio framework or about some reverse engineered
RAID drivers in OpenBSD (or bad mails from them to some vendors). From
an user point of view the bio framework (as in "a generic interface
for the sysadmin to do RAID stuff", and not as in "the concrete
implementation in OpenBSD") is something you want to have. I don't
think that it is a bad idea to port it (and improve it). OpenBSD has
some RAID controllers converted to it and the framework already
represents an usable interface for a lot of cases. I don't know if it
needs improvement or not, I don't know if it can cover all current
feature needs for such a framework for all possible RAID systems (most
probably not), but it would be an improvement for vendors which want
to write support for their RAID hardware as they don't have to come up
with their own BSD code to manage those parts. And we could improve
"our bio framwork" (if we had/get one) based upon vendor feedback (we
already improved our network interfaces upon vendor feedback, haven't
we?). In case you talk about porting some "alienated" raid drivers
from OpenBSD... I agree that it is not a good idea to kick a vendor in
the ass (a vendor which provides some kind of FreeBSD support... if
there's a driver for raid hardware for which the vendor doesn't
provide any support for a driver for FreeBSD at all, it depends upon
the specific driver code from OpenBSD if it is a good idea to port it
or not).
So in short: having a generic framework would be beneficial for
vendors. Kicking vendors in the ass is not my intention. Feel free to
document pitfalls in the RAID stuff in OpenBSD, so that nobody in
FreeBSd-land makes the same mistakes (but is able to get good parts if
the idea of an unified interface into FreeBSD).
Sorry for not taking the time to write a more readable mail.
Bye,
Alexander.
--
http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137
BEAUTY:
What's in your eye when you have a bee in your hand.
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