From: Geoff Collyer <geoff@collyer.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Standalone Fileserver with IDE disk?
Date: Mon, 15 Sep 2003 02:37:21 -0700 [thread overview]
Message-ID: <ec7845c4765e5548c98e3cc9cebdc1ad@collyer.net> (raw)
In-Reply-To: <86oexmv29j.fsf@gic.mteege.de>
See /sys/src/fs/pc/devata.c; IDE == ATA == PATA.
It works; I have 4 IDE disks on my file server. You need to declare
the controllers as apparently not described in plan9.ini(8) (to my
surprise):
ata0=type=ata irq=14
ata1=type=ata irq=15
The bad news is, as jmk noted, that the driver uses programmed I/O,
not DMA, so use of the IDE disks chews up the file server's CPU. I
haven't had time to fix it and just making the cache disk into a SCSI
disk would largely solve the problem; doing the same for `other' would
almost entirely solve it.
prev parent reply other threads:[~2003-09-15 9:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-15 9:23 Matthias Teege
2003-09-15 9:37 ` Geoff Collyer [this message]
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