Strange problem with a Linux server

Dominik Weis (weis@math.hws.edu)
Wed, 7 Oct 1998 15:17:00 -0400 (EDT)


We had a Linux server that lost all the network connections and nobody
was able to connect to it. I was not at
the server when it happend but another person rebooted the server and
after it restarted it worked again. We did not change anything on the
server for more than two weeks. It worked really fine. The strange part is
I have nothing in the logs about errors and there where no error messages
on the console.
The server is a SMP system (400Mhz) and has 256MB Ram. We use kernel
version 2.0.35 and the ethernet card that we use is:
<4>de4x5.c:V0.535 1998/2/21 davies@maniac.ultranet.com
<4>eth0: media is 100Mb/s.

Does anyone now what could have been the problem or where should I search
for the reason? Could the problem be related to the ethernet driver?

Thanks

Dominik Weis

Boot message:

<4>Memory: sized by int13 0e801h
<4>Intel MultiProcessor Specification v1.1
<4> Virtual Wire compatibility mode.
<4>OEM ID: INTEL Product ID: 440BX APIC at: 0xFEE00000
<4>Processor #0 Pentium(tm) Pro APIC version 17
<4>Processor #1 Pentium(tm) Pro APIC version 17
<4>I/O APIC #2 Version 17 at 0xFEC00000.
<4>Processors: 2
<4>Console: 16 point font, 400 scans
<4>Console: colour VGA+ 80x25, 1 virtual console (max 63)
<4>pcibios_init : BIOS32 Service Directory structure at 0x000fdb50
<4>pcibios_init : BIOS32 Service Directory entry at 0xfdb60
<4>pcibios_init : PCI BIOS revision 2.10 entry at 0xfdb81
<4>Probing PCI hardware.
<4>Calibrating delay loop.. ok - 400.59 BogoMIPS
<4>Memory: 257152k/262144k available (720k kernel code, 384k reserved,
3888k data)
<6>Swansea University Computer Society NET3.035 for Linux 2.0
<6>NET3: Unix domain sockets 0.13 for Linux NET3.035.
<4>Swansea University Computer Society TCP/IP for NET3.034
<4>IP Protocols: ICMP, UDP, TCP
<6>Appletalk 0.17 for Linux NET3.035
<5>VFS: Diskquotas version dquot_5.6.0 initialized

<4>Checking 386/387 coupling... Ok, fpu using exception 16 error
reporting.
<4>Checking 'hlt' instruction... Ok.
<4>Linux version 2.0.35 (root@math) (gcc version 2.7.2.1) #7 Wed Aug 26
13:57:44 EDT 1998
<4>Booting processor 1 stack 00002000: Calibrating delay loop.. ok -
400.59 BogoMIPS
<4>Total of 2 processors activated (801.18 BogoMIPS).
<4>Starting kswapd v 1.4.2.2
<6>Serial driver version 4.13 with no serial options enabled
<6>tty00 at 0x03f8 (irq = 4) is a 16550A
<6>tty01 at 0x02f8 (irq = 3) is a 16550A
<6>PS/2 auxiliary pointing device detected -- driver installed.
<4>APM BIOS version 1.2 Flags 0x03 (Driver version 1.2)
<4> Entry f000:ef50 cseg16 f000 dseg 40 cseg len ffff, dseg len 100
<4> Connection version 1.1
<4> AC on line, battery status unknown, battery life unknown
<4> battery flag 0x80, battery life unknown
<4>Real Time Clock Driver v1.09
<4>ide: i82371 PIIX (Triton) on PCI bus 0 function 57
<4> ide0: BM-DMA at 0xffa0-0xffa7
<4>hda: TOSHIBA CD-ROM XM-6202BH, ATAPI CDROM drive
<4>ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
<6>Floppy drive(s): fd0 is 1.44M
<6>FDC 0 is a National Semiconductor PC87306
<4>md driver 0.36.3 MAX_MD_DEV=4, MAX_REAL=8
<4>raid0 personality registered
<6>ncr53c8xx: at PCI bus 0, device 18, function 0
<6>ncr53c8xx: 53c815 detected
<6>ncr53c8xx: at PCI bus 0, device 16, function 0
<6>ncr53c8xx: 53c895 detected with Symbios NVRAM
<6>ncr53c895-0: rev=0x01, base=0xffafff00, io_port=0xe800, irq=10
<6>ncr53c895-0: Symbios format NVRAM, ID 7, Fast-40, Parity Checking
<6>ncr53c895-0: initial SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex)
07/4e/a0/01/00/24
<6>ncr53c895-0: final SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex)
07/8e/a0/00/08/24
<6>ncr53c895-0: on-chip RAM at 0xffafe000
<6>ncr53c895-0: requesting shared irq 10 (dev_id=0x8080)
<4>ncr53c895-0: resetting, command processing suspended for 2 seconds
<6>ncr53c895-0: restart (scsi reset).
<4>ncr53c895-0: enabling clock multiplier
<4>ncr53c895-0: Downloading SCSI SCRIPTS.
<6>ncr53c815-1: rev=0x04, base=0xffaffd00, io_port=0xe400, irq=9
<6>ncr53c815-1: ID 7, Fast-10, Parity Checking
<6>ncr53c815-1: restart (scsi reset).
<4>scsi0 : ncr53c8xx - revision 3.0f
<4>scsi1 : ncr53c8xx - revision 3.0f
<4>scsi : 2 hosts.
<4>ncr53c895-0: command processing resumed
<4> Vendor: QUANTUM Model: VIKING II 4.5WLS Rev: 4110
<4> Type: Direct-Access ANSI SCSI revision: 02
<4>Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
<4> Vendor: QUANTUM Model: VIKING II 4.5WLS Rev: 4110
<4> Type: Direct-Access ANSI SCSI revision: 02
<4>Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
<4> Vendor: QUANTUM Model: VIKING II 4.5WLS Rev: 3506
<4> Type: Direct-Access ANSI SCSI revision: 02
<4>Detected scsi disk sdc at scsi0, channel 0, id 2, lun 0
<4> Vendor: QUANTUM Model: VIKING II 4.5WLS Rev: 3506
<4> Type: Direct-Access ANSI SCSI revision: 02
<4>Detected scsi disk sdd at scsi0, channel 0, id 3, lun 0
<6>ncr53c895-0-<0,0>: tagged command queue depth set to 16
<6>ncr53c895-0-<1,0>: tagged command queue depth set to 16
<6>ncr53c895-0-<2,0>: tagged command queue depth set to 16
<6>ncr53c895-0-<3,0>: tagged command queue depth set to 16
<4> Vendor: HP Model: C1533A Rev: A708
<4> Type: Sequential-Access ANSI SCSI revision: 02
<6>Detected scsi tape st0 at scsi1, channel 0, id 4, lun 0
<4>scsi : detected 1 SCSI tape 4 SCSI disks total.
<6>ncr53c895-0-<0,*>: WIDE SCSI (16 bit) enabled.
<6>ncr53c895-0-<0,*>: FAST-40 WIDE SCSI 80.0 MB/s (25 ns, offset 31)
<4>SCSI device sda: hdwr sector= 512 bytes. Sectors= 8910423 [4350 MB]
[4.2 GB]
<6>ncr53c895-0-<1,*>: WIDE SCSI (16 bit) enabled.
<6>ncr53c895-0-<1,*>: FAST-40 WIDE SCSI 80.0 MB/s (25 ns, offset 31)
<4>SCSI device sdb: hdwr sector= 512 bytes. Sectors= 8910423 [4350 MB]
[4.2 GB]
<6>ncr53c895-0-<2,*>: WIDE SCSI (16 bit) enabled.
<6>ncr53c895-0-<2,*>: FAST-40 WIDE SCSI 80.0 MB/s (25 ns, offset 31)
<4>SCSI device sdc: hdwr sector= 512 bytes. Sectors= 8910423 [4350 MB]
[4.2 GB]
<6>ncr53c895-0-<3,*>: WIDE SCSI (16 bit) enabled.
<6>ncr53c895-0-<3,*>: FAST-40 WIDE SCSI 80.0 MB/s (25 ns, offset 31)
<4>SCSI device sdd: hdwr sector= 512 bytes. Sectors= 8910423 [4350 MB]
[4.2 GB]
<4>Partition check:
<4> sda: sda1 sda2 sda3
<4> sdb: sdb1
<4> sdc: sdc1
<4> sdd: sdd1 sdd2
<4>VFS: Mounted root (ext2 filesystem) readonly.
<4>REGISTER_DEV sdb1 to md0 done
<4>REGISTER_DEV sdc1 to md0 done
<4>raid0 : Allocating 8 bytes for hash.
<4>Adding Swap: 130748k swap-space (priority -1)
<4>Adding Swap: 130748k swap-space (priority -2)
<4>eth0: DC21143 at 0xec00 (PCI bus 0, device 17), h/w address
00:48:54:00:d1:2d,
<4> and requires IRQ11 (provided by PCI BIOS).
<4>de4x5.c:V0.535 1998/2/21 davies@maniac.ultranet.com
<4>eth0: media is 100Mb/s.
<6>ncr53c815-1-<4,*>: FAST-10 SCSI 10.0 MB/s (100 ns, offset 8)

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