amanda/dump crash

[Alexis Tremblay <alex_(_at_)_secureops_(_dot_)_com>]

Hi everyone, the problem I have is kinda weird (aren't they all when you 
don't know why it breaks?), it seems that the backup system I use 
(Amanda, The Advanced Maryland Automatic Network Disk Archiver) renders 
my important-to-be-backed-up system at the ddb prompt every night, I am 
just wondering if somebody had a situation like this or similar...

general details:
The thing is that when I run 'amdump Nameofconfig' as operator user FROM 
the backup server, in cron or even manually, the fileserver (that has to 
be backed-up) ALWAYS crashes and gets to be rebooted... it's a pretty 
annoying situation... I suspect the dump program to be the cause, or 
it's a hardware prob but hey I did some LARGE compress/uncompress/disk 
scratch stress tests against that system (only with tar though)... I am 
not sure of anything now, I need an advice.

os details:
OpenBSD 2.8 upgraded (as per FAQ instructions) to 2.9 (all patched) 
because of this problem

ddb prompt details:
# output of ps (too big, can't cat output into file so copied only
# line with * at the begining... anybody could tell me if it is
# possible to cat to a file when in ddb?)
PID 
PPID 
ARGP 
UID 
S 
FLAGS 
WAIT 
COMMAND
*24613 
19020 
28709 
2 
Z 
0x4004 
	dump

# output of trace
# ugh, _uvm faults... hardware prob? could it be??
_panic(e02d660b,0,0e0697d74,193000) at _panic+0x81
_pmap_enter(e9c0235c,1d4000,53d8000,7,0,193000,e9bfb970,0) at 
__pmap_enter +0x4d3
_uvm_fault(e9c0235c,1d4000,0,3) at _uvm_fault+0x1076
_trap() at _trap+0x5d1
---trap(number 6)---
0x32b8b

file details:
# /etc/fstab:
# Device        Mount                    FS     Mount   Dump    FSCK
#  Name         Point                   Type    Opts    Freq    pass
/dev/sd0a       /                       ffs     rw      1       1
/dev/sd0d       /usr                    ffs     rw      1       2
/dev/sd0e       /var                    ffs     rw      1       2
/dev/sd0f       /usr/local              ffs     rw      1       2
/dev/sd0g       /home                   ffs     rw      1       2
/dev/sd0h       /tmp                    ffs     rw      1       2
/dev/sd0i       /var/log                ffs     rw      1       2
/dev/sd0j       /dominus/dir1           ffs     rw      1       2
/dev/sd0k       /dominus/dir2           ffs     rw      1       2
/dev/sd0l       /dominus/dir3           ffs     rw      1       2
/dev/sd0m       /dominus/dir4           ffs     rw      1       2
/dev/sd0n       /dominus/dir5           ffs     rw      1       2
/dev/sd0o       /dominus/dir6           ffs     rw      1       2

# output of df
Filesystem  512-blocks     Used    Avail Capacity  Mounted on
/dev/sd0a        62242    44372    14758    75%    /
/dev/sd0d       512830   285892   201298    59%    /usr
/dev/sd0e        62302    21060    38128    36%    /var
/dev/sd0f      4066208  1572126  2290772    41%    /usr/local
/dev/sd0g         8286      130     7742     2%    /home
/dev/sd0h      1001310   251254   699992    26%    /tmp
/dev/sd0i      4066208    82086  3780812     2%    /var/log
/dev/sd0j     20336940        2 19320092     0%    /dominus/dir1
/dev/sd0k     20336940   251764 19068330     1%    /dominus/dir2
/dev/sd0l     20336940  3257416 16062678    17%    /dominus/dir3
/dev/sd0m     40691900 20881790 17775516    54%    /dominus/dir4
/dev/sd0n     40691900 22004926 16652380    57%    /dominus/dir5
/dev/sd0o     40691900 16394760 22262546    42%    /dominus/dir6

# dmesg
OpenBSD 2.9 (SANCTUM) #0: Mon Aug 20 12:57:58 EST 2001
    root_(_at_)_Sanctum:/usr/src/sys/arch/i386/compile/SANCTUM
cpu0: Intel Pentium III (Coppermine) ("GenuineIntel" 686-class) 731 MHz
cpu0: 
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SYS,MTRR,PGE,MCA,CMOV,PAT,PSE36,SER,MMX,FXSR,SIMD
real mem  = 132493312 (129388K)
avail mem = 118263808 (115492K)
using 1642 buffers containing 6725632 bytes (6568K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 02/10/00, BIOS32 rev. 0 @ 0xfda74
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
pcibios0 at bios0: rev. 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev. 1.0 @ 0xf31d0/192 (10 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371FB PCI-ISA" rev 
0x00)
pcibios0: PCI bus #1 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000 0xc9000/0x1000 0xca000/0x800
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82810E" rev 0x03: rng active, 9Kb/sec
vga1 at pci0 dev 1 function 0 "Intel 82810E Graphics" rev 0x03
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
ppb0 at pci0 dev 30 function 0 "Intel 82801AA Hub-to-PCI" rev 0x02
pci1 at ppb0 bus 1
fxp0 at pci1 dev 1 function 0 "Intel 82557" rev 0x08: irq 9, address 
00:d0:b7:b5:53:ab
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
twe0 at pci1 dev 8 function 0 "3ware Escalade IDE RAID" rev 0x12: irq 11
twe0: Escalade V8.6
scsibus0 at twe0: 16 targets
sd0 at scsibus0 targ 0 lun 0: <3WARE, Host drive  #00, > SCSI2 0/direct 
fixed
sd0: 117244MB, 14946 cyl, 255 head, 63 sec, 512 bytes/sec, 240117504 sec 
total
ahc1 at pci1 dev 9 function 0 "Adaptec AHA-2940U2 U2" rev 0x00: irq 10
ahc1: Wide Channel A, SCSI Id=7, 16/255 SCBs
scsibus1 at ahc1: 16 targets
pcib0 at pci0 dev 31 function 0 "Intel 82801AA LPC Interface" rev 0x02
pciide0 at pci0 dev 31 function 1 "Intel 82801AA IDE" rev 0x02: DMA, 
channel 0 wired to compatibility, channel 1 wired to compatibility
pciide0: channel 0 ignored (disabled)
pciide0: channel 1 ignored (disabled)
uhci0 at pci0 dev 31 function 2 "Intel 82801AA USB" rev 0x02: irq 9
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: vendor 0x0000 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
"Intel 82801AA SMBus" rev 0x02 at pci0 dev 31 function 3 not configured
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
sysbeep0 at pcppi0
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask e40 netmask e40 ttymask 1e42
pctr: 686-class user-level performance counters enabled
mtrr: Pentium Pro MTRR support
dkcsum: sd0 matched BIOS disk 80
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
WARNING: / was not properly unmounted


Thank you for reading me out
--
      Alexis Tremblay
  /Network Administrator\
     \Security Officer/
       SecureOps Inc.