Making Debian ignore a drive

Thomas Charron twaffle at gmail.com
Wed Apr 11 14:59:07 EDT 2007


On 4/11/07, Ben Scott <dragonhawk at gmail.com> wrote:
> On 4/11/07, Thomas Charron <twaffle at gmail.com> wrote:
> >   Call me silly, but isn't IPMI connected to the SCSI backplane?
>   Um... I don't think so.  I've certainly never seen it show up on the
> actual SCSI bus.  I think it uses one of the various "small bus"
> interfaces -- SMbus, maybe?

  Maybe it just monitors it then.  I thought I'd seen IPMI be able to
tell the health of drives on the SCSI backplane, without an OS
providing that information to it.  See below.

>   IPMI does offer chassis management functions (like fan and
> temperature monitoring), which might include stuff on or near the SCSI
> backplane.  (There is a SCSI standard for that stuff, too (SES -- SCSI
> Enclosure Services), but not everything uses it.)

  I may have been confusing it with SES.  Either that, or something
specific to the Dell specific array controllers, as that's one machine
I specifically recall being able to do that.

>   Keep in mind also that many drivers present their API using the OS's
> SCSI subsystem, because SCSI is pretty much the universal I/O model
> for everything these days.  So just because the kernel is calling it
> "SCSI" doesn't mean it actually is SCSI.

  Aye, I'm pretty sure based on a quick google search I was definatly
incorrect in the assumption that the IPMI was actually monitoring any
SCSI bus.  It was something else.

-- 
-- Thomas


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