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Date:      Tue, 2 Jul 2002 19:34:27 -0700
From:      steve@Watt.COM (Steve Watt)
To:        stable@freebsd.org
Cc:        sos@freebsd.dk
Subject:   ATA tags again (was Re: dirbad panic "mangled entry" in 4.6-S from yesterday)
Message-ID:  <200207030234.g632YRFf015291@wattres.Watt.COM>
In-Reply-To: <200206272345.g5RNjNDS079083@wattres.Watt.COM>

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In article <200206272345.g5RNjNDS079083@wattres.Watt.COM> I wrote:
>Greetings!
>
>I came back up to stable yesterday, after sitting at 4.6-RC2 for a while.
>Things were working fine (except for ATA tagging on my DTLA drives) before
>I upgraded.  I reenabled tagging, and things seemed OK.
>
>Last night, during the daily run, it panic()ed.

And, in fact, did so the next night as well, with a noticably different
syndrome that still implicated the disk system.

Turning off hw.ata.tags makes the system live through the night again.
Is it just time to give up on tagged ATA?  I don't have a strong
feeling for how much of a performance win it is.

> - - - 8< - - -
>panic: ufs_dirbad: bad dir
>
>syncing disks... ad0: WRITE command timeout tag=18 serv=0 - resetting
>ad0: invalidating queued requests
>ata0: resetting devices .. ad0: invalidating queued requests
>done
>143 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 
>giving up on 2 buffers
>Uptime: 11h27m33s
>
> - - - >8 - - -

-- 
Steve Watt KD6GGD  PP-ASEL-IA          ICBM: 121W 56' 57.8" / 37N 20' 14.9"
 Internet: steve @ Watt.COM                         Whois: SW32
   Free time?  There's no such thing.  It just comes in varying prices...

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