Subject: Re: have scsibus sleep only one time
To: Christoph Badura <email@example.com>
From: Manuel Bouyer <firstname.lastname@example.org>
Date: 03/10/2003 21:16:36
On Mon, Mar 10, 2003 at 01:31:30AM +0100, Christoph Badura wrote:
> Actually, what business do we have resetting the SCSI busses?
> 1) this wreaks havoc with scsibusses with multiple initiators on the bus
> (vulgo: HA clusters). We'll have to deal with that anyway at one point.
Other HBAs on the bus should also be able to deal with a reset
> 2) most, if not all, of the host adapters/firmware already do a reset on
> boot, sometimes controlled by per-adapter configuration settings. why bother
> a second time.
What about adapters which don't have firware ? For example a i386 HBA in a
> (The same goes for resetting ATA disks. The only effects I seem to be able
> to witness is that a) the bios sleep and suspend setting get lost. b) the
> bios-programmed geometry gets lost. Both aren't exactly bonus points in my
We explicitely want to start from a clean config, so that we're in the same
state on any hardware we run on. There isn't always a BIOS to initialise things
And we don't always want to keep what the firmware has done. For example, a
sparc64 booted from network won't be able to use its IDE disks without a reset.
Manuel Bouyer <email@example.com>
NetBSD: 24 ans d'experience feront toujours la difference