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SubjectVFS: Disk change detected on device ide0(3,0)
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A few minutes after a reboot, the following error messages appear on our system

hda: ATAPI 8X CD-ROM drive, 128kB Cache
Uniform CDROM driver Revision: 2.55
cdrom: open failed.

followed by a repeating VFS error messages below.

VFS: Disk change detected on device ide0(3,0)
VFS: Disk change detected on device fd(2,0)
end_request: I/O error, dev 02:00 (floppy), sector 0
cdrom: open failed.

It all started when we upgraded to linux 2.2.x series and this time 2.2.11 has
been released but still we have this problem. We don't do anything on our
CD-ROM and floppy drive but the messages just keep on appearing from time to
time.
The system is a Compaq Proliant 800 with 1 Pentium 200 processor, 128MB RAM,
1 4GB SCSI drive, 1 IDE CD-ROM drive and a floppy drive. The system is using
Redhat 6.0 distribution.
I also noticed that it's only on Pentium Pro servers that the error message
did appear. On our Pentium 130 system, no such error occur.

Anybody out there have any idea how to get away with such problem?



Below is the dmesg output.

[root@ns1 linux]# dmesg
Linux version 2.2.11 (root@ns1) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 Tue Aug 10 09:10:15 PHT 1999
Detected 199436933 Hz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 199.07 BogoMIPS
Memory: 128212k/131072k available (876k kernel code, 416k reserved, 1516k data, 52k init)
CPU: Intel Pentium Pro stepping 09
Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.35 (19990512) Richard Gooch (rgooch@atnf.csiro.au)
PCI: PCI BIOS revision 2.10 entry at 0xf005e
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Device 00:00 not found by BIOS
PCI: BIOS reporting unknown device 00:a2
PCI: 00:00 [8086/1237]: Passive release enable (00)
PIIX3: Enabling Passive Release
Linux NET4.0 for Linux 2.2
Based upon Swansea University Computer Society NET3.039
NET4: Unix domain sockets 1.0 for Linux NET4.0.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
Starting kswapd v 1.5
Detected PS/2 Mouse Port.
Serial driver version 4.27 with no serial options enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
pty: 256 Unix98 ptys configured
PIIX3: IDE controller on PCI bus 00 dev a1
PIIX3: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0x1000-0x1007, BIOS settings: hda:pio, hdb:pio
hda: MATSHITA CR-583, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Floppy drive(s): fd0 is 1.44M
FDC 0 is a National Semiconductor PC87306
sym53c8xx: at PCI bus 1, device 4, function 0
sym53c8xx: 53c875 detected
sym53c875-0: rev=0x03, base=0x40101000, io_port=0x7000, irq=9
sym53c875-0: ID 7, Fast-20, Parity Checking
sym53c875-0: on-chip RAM at 0x40100000
sym53c875-0: restart (scsi reset).
sym53c875-0: Downloading SCSI SCRIPTS.
scsi0 : sym53c8xx - version 1.3g
scsi : 1 host.
sym53c875-0-<0,*>: FAST-10 WIDE SCSI 20.0 MB/s (100 ns, offset 15)
Vendor: COMPAQ Model: ST34371W Rev: 0388
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
sym53c875-0-<0,0>: tagged command queue depth set to 4
scsi : detected 1 SCSI disk total.
SCSI device sda: hdwr sector= 512 bytes. Sectors= 8386000 [4094 MB] [4.1 GB]
Partition check:
sda: sda1 sda2 < sda5 sda6 sda7 >
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 52k freed
Adding Swap: 128484k swap-space (priority -1)
3c59x.c:v0.99H 11/17/98 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/vortex.html
eth0: 3Com 3c905 Boomerang 100baseTx at 0x7400, 00:60:08:9c:56:8c, IRQ 5
8K word-wide RAM 3:5 Rx:Tx split, MII interface.
MII transceiver found at address 24, status 786d.
Enabling bus-master transmits and whole-frame receives.
hda: ATAPI 8X CD-ROM drive, 128kB Cache
Uniform CDROM driver Revision: 2.55
cdrom: open failed.
VFS: Disk change detected on device ide0(3,0)
VFS: Disk change detected on device fd(2,0)
end_request: I/O error, dev 02:00 (floppy), sector 0
cdrom: open failed.
VFS: Disk change detected on device ide0(3,0)
VFS: Disk change detected on device fd(2,0)
end_request: I/O error, dev 02:00 (floppy), sector 0
cdrom: open failed.
VFS: Disk change detected on device ide0(3,0)
VFS: Disk change detected on device fd(2,0)
end_request: I/O error, dev 02:00 (floppy), sector 0
cdrom: open failed.
VFS: Disk change detected on device ide0(3,0)
VFS: Disk change detected on device fd(2,0)
end_request: I/O error, dev 02:00 (floppy), sector 0


[root@ns1 linux]# pwd
/usr/src/linux
[root@ns1 linux]# sh scripts/ver_linux
-- Versions installed: (if some fields are empty or looks
-- unusual then possibly you have very old versions)
Linux ns1 2.2.11 #1 Tue Aug 10 09:10:15 PHT 1999 i686 unknown
Kernel modules 2.1.121
Gnu C egcs-2.91.66
Binutils 2.9.1.0.23
Linux C Library 2.1.1
Dynamic linker ldd (GNU libc) 2.1.1
Procps 2.0.2
Mount 2.9o
Net-tools 1.52
Console-tools 1999.03.02
Sh-utils 1.16
Modules Loaded ide-cd cdrom 3c59x


--
----------------------------------
Vernie T. Gloria Systems Engineer
Sky Internet Inc. - Cebu, Philippines
----------------------------------

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