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Date:      Sat, 03 Oct 1998 15:18:08 -0700
From:      Mike Smith <mike@smith.net.au>
To:        Brian Tao <taob@risc.org>
Cc:        FREEBSD-CURRENT <freebsd-current@FreeBSD.ORG>
Subject:   Re: devstat_end_transaction: HELP!! busy_count is < 0! 
Message-ID:  <199810032218.PAA08167@word.smith.net.au>
In-Reply-To: Your message of "Sat, 03 Oct 1998 16:38:05 EDT." <Pine.GSO.3.96.981003162648.23916K-100000@tor-dev1.nbc.netcom.ca> 

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>     This message seems to be harmless enough, based on what I see (or
> don't see) in /usr/src/sys/kern/subr_devstat.c:180, but I presume the
> printf was put there as warning flag if ds->busy_count was decremented
> below 0.  From my best recollection, I was attempting to mount two
> MS-DOS filesystems on wd0s1 and wd0s3 (wd0s2 is the FreeBSD
> partition). 

Hmm.  Looks like the 'wd' driver isn't doing the devstat counting 
right.  Oops.  You're not even doing any funny DMA things.

> The mountmsdosfs() errors are from mounting wd0s3, which
> it can't see to do (perhaps because the partition type != 6?).
...
> Oct  3 10:26:40 cabal /kernel: mountmsdosfs(): bad bpb
> Oct  3 10:28:25 cabal /kernel: mountmsdosfs(): bad bpb
...
> # fdisk wd0
...
> The data for partition 3 is:
> sysid 15,(Extended DOS, LBA)
>     start 10474380, size 7325640 (3576 Meg), flag 0
>         beg: cyl 652/ sector 1/ head 0;
>         end: cyl 1023/ sector 63/ head 254
> The data for partition 4 is:
> <UNUSED>

wd0s3 is not an MSDOS partition, it's an extended partition.  wd0s5 is 
the first partition inside wd0s3, you might want to try mounting that.


-- 
\\  Sometimes you're ahead,       \\  Mike Smith
\\  sometimes you're behind.      \\  mike@smith.net.au
\\  The race is long, and in the  \\  msmith@freebsd.org
\\  end it's only with yourself.  \\  msmith@cdrom.com



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