Date: Wed, 4 Apr 2001 23:17:23 -0500 From: anarcat <anarcat@tao.ca> To: stable@freebsd.org Subject: Spontaneous reboot, no panic. Recovering from a crash. Message-ID: <20010404231722.A25165@dojo>
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Hi.
I need to share the experience I just had with a very particular crash.
If any of you had similar experiences, please share. Critics and
suggestions on procedure are welcome.
I really don't know how to put this, but since we're in a code freeze
and I'm running stable, if a few people witness this behavior, well...
Anyways...
A bit of background:
FreeBSD shall.anarcat.yi.org 4.3-BETA FreeBSD 4.3-BETA #2: Wed Mar 14
18:50:48 EST 2001 root@:/usr/obj/usr/src/sys/SHALL i386
A few minutes ago, I was doing a few things at the same time on my
machine. I was doing a make install clean in
sysutils/[gcombust|gtoaster|xcdroast], copying /mnt/cdr to ~/cdr, and
opening a ssh session to my shell account.
Before I could get to a password prompt on the shell account, I didn't
even had time to realize what's going on that my computer beeped and was
back to the BIOS POST startup procedure.
Bad.
I was a bit distracted at the time it happened so I have no idea what
happened exactly. When FreeBSd restarted, fsck wasn't able to fix
everything automagically, so I had to run it from single-user mode.
I had so much scrapped files that I interrupted the process at some
point to restart it with "fsck -y". Things like UNREF DIR, LINK COUNT
DIR, UNREF FILE, and all sort of evil warnings of the kind.
Now my system seems to be running fine, but I did not run extensive
tests. I do not have tripwire or any filesystem integrity checker and I
have no clue on how I can figure out what was scrapped.
I am unable to provide debug info as there was no panic, as far as I can
tell. I can say, however, that there are 348 files in /usr/lost+found.
Yay. All of which have file mod dates set before the crash, this
morning, actually.
But I have the following info:
The "crash" has somehow been recorded in wtmp. last says:
anarcat ttyp1 :0 Mer 4 avr 23:45 - 23:47 (00:01)
reboot ~ Mer 4 avr 23:43=20
anarcat ttyp4 :1 Mer 4 avr 23:26 - crash (00:17)
Oddly enough, dmesg was not record in /var/log/messages after bootup.
Last thing I have there is:
Apr 4 23:23:47 shall su: anarcat to root on /dev/ttyp2
Apr 4 23:24:47 shall su: anarcat to root on /dev/ttyp3
Apr 4 23:43:07 shall ntpd[223]: ntpd 4.0.99b Fri Mar 9 00:52:31 EST
2001 (1)
Apr 4 23:43:07 shall ntpd[223]: using kernel phase-lock loop 2040
Where there should have been dmesg info somewhere in between. The 2 su's
are my make install attempts before the crash.
I really don't see what other info I could find on that. This morning's
dmesg output follows.=20
My next step is to remake to world after a fresh cvsup, because from the
stuff in lost+found, I lost a few files in /usr/src.=20
I read a few 'spontaneous reboots' threads before and I guess this comes
to the same thing. Forgive and forget. "Probably a hardware problem". :)
Anyways, if I have any fresh info on that, I'll keep the list informed,
but as of now, just consider this mail as a friendly marker of a local
apocalypse.
Don't do as daddy does, boys and girls. Do backups. Often. You never
know when the shit'll the fan. :)
Dmesg output. Please note that the cd used for the copy was the scsi
one.
Copyright (c) 1992-2001 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights
reserved.
FreeBSD 4.3-BETA #2: Wed Mar 14 18:50:48 EST 2001
root@:/usr/obj/usr/src/sys/SHALL
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium/P55C (167.05-MHz 586-class CPU)
Origin =3D "GenuineIntel" Id =3D 0x543 Stepping =3D 3
Features=3D0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX>
real memory =3D 33554432 (32768K bytes)
config> dis sio2
config> q
avail memory =3D 29335552 (28648K bytes)
Preloaded elf kernel "kernel" at 0xc036a000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc036a09c.
Intel Pentium detected, installing workaround for F00F bug
md0: Malloc disk
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
isab0: <Intel 82371AB PCI to ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 ATA33 controller> port 0xf000-0xf00f at device 7.1
on pci0
ata0: at 0x1f0 irq 14 on atapci0
pci0: <Intel 82371AB/EB (PIIX4) USB controller> at 7.2 irq 11
chip1: <Intel 82371AB Power management controller> port 0x5000-0x500f at
device 7.3 on pci0
pci0: <ATI Mach64-GU graphics accelerator> at 9.0
ahc0: <Adaptec 2930CU SCSI adapter> port 0x6400-0x64ff mem
0xe1001000-0xe1001fff irq 10 at device 10.0 on pci0
aic7860: Single Channel A, SCSI Id=3D7, 3/255 SCBs
vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0x6a00-0x6aff mem
0xe1002000-0xe10020ff irq 9 at device 11.0 on pci0
vr0: Ethernet address: 00:50:ba:64:e3:6a
miibus0: <MII bus> on vr0
ukphy0: <Generic IEEE 802.3u media interface> on miibus0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on
isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=3D0x300>
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on
isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode
ppi0: <Parallel I/O> on ppbus0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
pca0 at port 0x40 on isa0
joy0 at port 0x201 on isa0
sbc0: <Creative ViBRA16C> at port 0x220-0x22f,0x330-0x331,0x388-0x38b
irq 5 drq 1,5 on isa0
pcm0: <SB16 DSP 4.13> on sbc0
unknown: <Game> can't assign resources
ata0-master: DMA limited to UDMA33, non-ATA66 compliant cable
ad0: 29311MB <Maxtor 53073H4> [59554/16/63] at ata0-master UDMA33
acd0: CDROM <MATSHITA CR-585> at ata0-slave using PIO3
Waiting 2 seconds for SCSI devices to settle
Mounting root from ufs:/dev/ad0s2a
cd0 at ahc0 bus 0 target 3 lun 0
cd0: <YAMAHA CRW8424S 1.0d> Removable CD-ROM SCSI-2 device=20
cd0: 20.000MB/s transfers (20.000MHz, offset 15)
cd0: cd present [279683 x 2048 byte records]
The Anarcat.
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