Re: NetBSD and JAZ drives

[Georges Heinesch <ghmlist%ibm.net@localhost>]

Quoting Georges Heinesch (13-Sep-98 19:57:24):

> I have NetBSD 1.3 installed on a JAZ drive. However I realized that,
> if the 'verify after write' JAZ feature is enabled, the JAZ produces
> corrupt filesystems. This occurs immediately after the first write
> access to the JAZ disk is done. This results in a corrupt root
> partition within seconds!

> I posted this already 4 month ago and got virtually no response.
> Even Ignatios didn't quite know what could be done here. Due to
> NetBSD, I had this feature disabled until now, but I would like to
> use it again since it is an additional safety feature.

> What it does, is actually very simple. It verifies the data written
> to the disk. I have no idea why NetBSD interferes with this feature?

> Why is this?

> Is there anybody using NetBSD on a JAZ disk with this 'verify after
> write' enabled?

Ignatios proposed to me to ask this in the tech-kern mailing list.
That's what I did and I got basically 2 responses from non-amiga
people.

1. The first one says, that on his system (i386), it's actually the
   other way around, which means that he gets problems when the
   'verify after write' feature is disabled.

2. The second one says that he's using this feature on a JAZ without
   the slightest problems.

Hence, the problem seems to be with the Amiga. Either it's the kernel
which slightly deviates in some respect, or it's the host itself
(WD-08) which is behaving differently as expected by the kernel.

Ignatios, could you (or somebody else of course ;) clarify this?

What are my options if I want to use this feature?


Thx.

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