From owner-freebsd-current  Sat Dec 28 11:34:22 2002
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Date: Sat, 28 Dec 2002 11:34:09 -0800
From: Jos Backus <jos@catnook.com>
To: freebsd-current@freebsd.org
Subject: spec_getpages I/O read failure on md0
Message-ID: <20021228193431.GA13948@lizzy.catnook.com>
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I am using the following fstab entry:

    /dev/md0 /tmp mfs rw,nosuid,nodev,-s=32m 0 0

And three times now have I seen this during an installworld, both on a UP and
an SMP system running a very recent -current:

    ===> usr.sbin/pcvt/ispcvt
    install -s -o root -g wheel -m 555   ispcvt /usr/sbin
    install -o root -g wheel -m 444 ispcvt.8.gz  /usr/share/man/man8
    ===> usr.sbin/pcvt/vgaio
    echo:Input/output error
    *** Error code 1

    Stop in /disk0/usr/src/usr.sbin/pcvt/vgaio.
    *** Error code 1

    Stop in /disk0/usr/src/usr.sbin/pcvt.
    *** Error code 1

    Stop in /disk0/usr/src/usr.sbin.
    *** Error code 1

    Stop in /disk0/usr/src.
    *** Error code 1

    Stop in /disk0/usr/src.
    *** Error code 1

    Stop in /disk0/usr/src.
    *** Error code 1

    Stop in /disk0/usr/src.

Accompanied by

    Dec 28 01:42:12 lizzy kernel: spec_getpages:(md0) I/O read failure: (error=22) bp 0xce5f9310 vp 0xc41e8708
    Dec 28 01:42:12 lizzy kernel: size: 2048, resid: 2048, a_count: 2028, valid: 0x0
    Dec 28 01:42:12 lizzy kernel: nread: 0, reqpage: 0, pindex: 1, pcount: 1
    Dec 28 01:42:12 lizzy kernel: vm_fault: pager read error, pid 40673 (sh)
    Dec 28 01:43:26 lizzy kernel: spec_getpages:(md0) I/O read failure: (error=22) bp 0xce5fb158 vp 0xc41e8708
    Dec 28 01:43:26 lizzy kernel: size: 14848, resid: 14848, a_count: 14404, valid: 0x0
    Dec 28 01:43:26 lizzy kernel: nread: 0, reqpage: 0, pindex: 0, pcount: 4

This is with

    FreeBSD lizzy.catnook.com 5.0-CURRENT FreeBSD 5.0-CURRENT #37: Wed Dec 25 13:08:26 PST 2002     jos@lizzy.catnook.com:/disk0/usr/obj/disk0/usr/src/sys/LIZZY  i386

Any pointers on how to gather more info to debug this problem?

-- 
Jos Backus                       _/  _/_/_/      Sunnyvale, CA
                                _/  _/   _/
                               _/  _/_/_/
                          _/  _/  _/    _/
jos at catnook.com        _/_/   _/_/_/          require 'std/disclaimer'

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