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Date:      Sun, 2 Jul 2000 10:54:12 +0930
From:      Greg Lehey <grog@lemis.com>
To:        Tomaz Borstnar <tomaz.borstnar@over.net>
Cc:        FreeBSD-questions@FreeBSD.ORG
Subject:   Re: vinum and 'soft errors' notices in /var/log/messages
Message-ID:  <20000702105412.H18213@wantadilla.lemis.com>
In-Reply-To: <4.3.2.7.2.20000701213109.025c09c0@193.189.189.100>
References:  <20000701000218.0A04037B523@hub.freebsd.org> <4.3.2.7.2.20000701213109.025c09c0@193.189.189.100>

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[Format recovered--see http://www.lemis.com/email/email-format.html]

Please don't wrap print output, it makes it painful to read.
On Saturday,  1 July 2000 at 21:38:58 -0100, Tomaz Borstnar wrote:

That's an interesting time zone.  Where are you located?

> Hello!
>
> 	Using FreeBSD 3.4-STABLE as of later december 1999 with vinum for
> mirroring data across two disks and was wondering about these messages:
>
>   May  1 02:01:43 server /kernel: wd0s1e: soft error reading fsbn 1120668 of 1120667-1120668 (wd0s1 bn 3168668; cn 3143 tn 8 sn 20) (status 58<rdy,seekdone,drq> error 40<uncorr>)
>
> Jun 24 03:33:10 server /kernel: wd0s1e: soft error reading fsbn 1120680 of 1120679-1120680 (wd0s1 bn 3168680; cn 3143 tn 8 sn 32) (status 58<rdy,seekdone,drq> error 40<uncorr>)
>
> Jun 25 02:01:52 server /kernel: wd0s1e: soft error reading fsbn 1120680 of 1120679-1120680 (wd0s1 bn 3168680; cn 3143 tn 8 sn 32) (status 58<rdy,seekdone,drq> error 40<uncorr>)
>
> wd0s1e is vinum partition with all the data and wd2s1e is a mirror of it.
>
> How serious is this

It's relatively serious.  Vinum may protect you from it if you're
running in a resilient configuration, but basically your drive has at
least two flaky sectors.  It could be telling you that it's dying.

> and should I think about replacing the disk?

Yes.

> Would dd be enough to copy / to second disk so system can still run
> - even with one disk. This would minimize downtime while replacing
> the disk.

If you're using Vinum, add a new plex on the new drive, start it, then
remove the old drive.  0 down time.

Greg
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