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To: girgen@partitur.se
Cc: freebsd-questions@FreeBSD.ORG
Cc: Tetsuro FURUYA <ht5t-fry@asahi-net.or.jp>
Subject: Re: fsck: disk sectors could not be read
From: Tetsuro FURUYA <ht5t-fry@asahi-net.or.jp>
Reply-To: Tetsuro FURUYA <ht5t-fry@asahi-net.or.jp>
In-Reply-To: Your message of "Mon, 13 Jul 1998 11:45:21 +0200"
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In Message-ID: <35A9D731.5E943C2F@partitur.se>
Palle Girgensohn <girgen@partitur.se> wrote:

> find: /usr/home/jens/blablabla: Input/output error
> 
> for about 20 files
> 
> The dmesg message shows a bunch of rows like this one:
> 
> > <rdy,seekdone,drq,err> error 40<uncorr>
> > wd0s2f: hard error reading fsbn 721259 of 721248-721263 (wd0s2 bn 1212779; cn 150 tn 50 sn 29)wd0: status 59<rdy,seekdone,drq,err> error 40<uncorr>
> 
> 
> > fsck /usr    gives this:
> ...
> CANNOT READ: BLK 721184
> ...
> THE FOLLOWING DISK SECTORS COULD NOT BE READ: 721259, 721260,
> NAME=/home/jens/blablabla
> 
> REMOVE? [yn] y
> 
> ...
> 
> FREE BLK COUNT(S) WRONG IN SUPERBLK
> SALVAGE? [yn] y
> 
> BLK(S) MISSING IN BIT MAPS
> SALVAGE? [yn] y
> 
> SUMMARY INFORMATION BAD
> SALVAGE? [yn] y
> 
> ...
> 
> A few files had to removed like this, but they're all on tape, so that's
> OK. My problem is that I want to map out theese blocks. How is this
> done? Also, is the disk about to crash? Shall I be concerned and rush to
> get a new one, or can I sleep o' night?  ;-)
> 
> TIA
> 
> Palle

bad144 scan mode detect all of bad secters. So,

bad144 -s -v /dev/wd0 2>&1 | tee -a bad144.log

will help you.

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