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Date:      Tue, 12 Dec 2000 13:41:16 +0100 (CET)
From:      Soren Schmidt <sos@freebsd.dk>
To:        debnar@o-c.sk ([Ivan Debn_r])
Cc:        freebsd-stable@freebsd.org, freebsd-current@freebsd.org
Subject:   Re: HPT370 RAID - booting
Message-ID:  <200012121241.NAA35339@freebsd.dk>
In-Reply-To: <NEBBLGGDMLOMBLNHDFHFMEDGCAAA.debnar@o-c.sk> from "[Ivan Debn_r]" at "Nov 8, 2000 05:15:09 pm"

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It seems [Ivan Debn_r] wrote:
[Charset iso-8859-2 unsupported, filtering to ASCII...]
> I'm just looking at the disk partitions, and the first 63 sectors are by
> default marked as unused. So is it really nescessary to have the ofset in
> the ar driver for HPT?

This has been changed in both -current and -stable, so use DD disks
with care (ie skip the first 10 secs)

> Correct me if I'm wrong, but in RAID1 it is essential to be able to take one
> of the drives and boot from it almost as if it was singe simple disk.

Yes, and ? that works just fine...

> How does the driver handles situation when there is one of the mirror drives
> broken or missing ?

Not at all, you have to use the BIOS to either switch off the RAID or
setup a new fresh disks or whatever you want to do.
If a RAID array is broken somehow, the driver wont attach it (a safety
mesure so you wont blow up the remaining disks)..

> Is it possible to query the driver to check, if the drives are OK from the
> userland ?

No.

However I have an atacontrol thingie on the bench but its not ready yet,
with that you will be able to control the RAIDs and other ATA related
stuff...

-Søren


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