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Date:      Tue, 13 Jan 2004 01:33:41 +0100
From:      Harald Schmalzbauer <h@schmalzbauer.de>
To:        Michael <cadaver@tucu.net>, freebsd-questions@freebsd.org
Subject:   Re: Promise Fastrak ATA RAID 1 mirror lost
Message-ID:  <200401130133.46064@harrymail>
In-Reply-To: <CDEC60D2-4546-11D8-9AEA-000393758564@tucu.net>
References:  <CDEC60D2-4546-11D8-9AEA-000393758564@tucu.net>

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On Monday 12 January 2004 22:32, Michael wrote:
> Hi,
>
> I have an intel motherboard with an onboard Promise Fastrak ATA RAID.
> This morning it reported that the mirror was lost and I would like to
> rebuild it.
>
> My system is FreeBSD 4.8-RELEASE-p10. This is what's reported from
> `atacontrol list`:
> ATA channel 0:
>      Master: acd0 <CD-540E/1.0A> ATA/ATAPI rev 0
>      Slave:       no device present
> ATA channel 1:
>      Master:      no device present
>      Slave:       no device present
> ATA channel 2:
>      Master:  ad4 <ST380021A/3.19> ATA/ATAPI rev 5
>      Slave:       no device present
> ATA channel 3:
>      Master:  ad6 <ST380021A/3.19> ATA/ATAPI rev 5
>      Slave:       no device present
>
> The kernel message that I saw in my daily report was this:
> ad6: hard error reading fsbn 140018943 of 0-127 (ad6 bn 140018943; cn
> 138907 tn
> 10 sn 57) trying PIO mode
> ad6: DMA problem fallback to PIO mode
> ad6: DMA problem fallback to PIO mode
> ad6: DMA problem fallback to PIO mode
> ad6: DMA problem fallback to PIO mode
> ad6: hard error reading fsbn 140019007 of 0-127 (ad6 bn 140019007; cn
> 138907 tn
> 11 sn 58) status=3D59 error=3D00
> ar0: WARNING - mirror lost
>
> Which is confirmed by the output of `atacontrol status ar0`:
> ar0: ATA RAID1 subdisks: ad4 ad6 status: DEGRADED
>
> So I looked at the handbook
> (<http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/raid.html>)
> and in section 12.4.3 it suggests that I detach, attach and then
> rebuild the array. Can I do this on a running system or do I first need
> to drop to single user mode? If I do that, how do that without
> rebooting? Does anyone have any experience with this?

Like you found in the handbook, atacontrol is what you need and yes, you ca=
n=20
do it without rebooting or droping into singleuser (if the drive hadn't=20
really failed but only had a "bad day" like trash on the bus which I=20
regularly have)

>
> The other option seems to be to reboot the computer and use the Fastrak
> firmware to rebuild the array.

Last time I tried that it didn't work for SIL0680 nor HPT372, but I don't k=
now=20
about the promise.
Give the handbook procedure a try!

=2DHarry

>
> Which option is the most painless? I have recent dumps of the system,
> but I would prefer not to have to go that route.
>
> Thanks for any help/suggestions,
>
> Michael
>
> _______________________________________________
> freebsd-questions@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> To unsubscribe, send any mail to
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