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Re: Netra X1 IDE controller/disk issues



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Hello,

On May 11, 2010, at 5:29 PM, <rjs%fdy2.demon.co.uk@localhost> <rjs%fdy2.demon.co.uk@localhost > wrote:

Michael <macallan%netbsd.org@localhost> wrote:
On May 11, 2010, at 4:20 PM, Chris Ross wrote:

After replacing the primary internal disk on my Netra X1, it's
running 5.1_RC1 stably.  I've since added another disk to it, a
Samsung SP2514N (ATA/133 250GB).  The first time after I boot, I can
label that disk, and when I try to newfs it: (partition a is all of
the disk except the first cylinder) with the following:

# newfs -i $[32*1024] -O 2 /dev/rwd1a

It causes the kernel to get "lost interrupt" issues, eventually
downgrading it to PIO.  I see the following on the console [before
newfs even begins to print the status dots]:

aceride0:1:0: lost interrupt
        type: ata tc_bcount: 512 tc_skip: 0
aceride0:1:0: bus-master DMA error: missing interrupt, status=0x21
wd1: transfer error, downgrading to Ultra-DMA mode 3
wd1a: DMA error writing fsbn 488396159 (wd1 bn 488397167; cn 484520
tn 15 sn 62), retrying
aceride0:1:0: lost interrupt
        type: ata tc_bcount: 512 tc_skip: 0
aceride0:1:0: bus-master DMA error: missing interrupt, status=0x21

I'd try a different, known good cable before anything else.

I see the same kinds of error on NetBSD/cats if I don't force the
controller to PIO mode in the kernel config.

Last time I saw errors like that was on a beige G3 - I thought our Heathrow DMA support was bad but it turned out I had /two/ bad cables, after switching them out it Just Worked. May or may not be a similar issue but as I said, it's the first thing I'd check before doing anything more complex.

There is a comment in the sparc64 GENERIC config that suggests the
same change is needed for Blade 100 and Netra X1 systems.

Makes sense, it's the same chip after all.
Maybe I should stick an IDE disk in my Blade 2500 just to see if I get similar problems.

have fun
Michael

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