I have an NFS server /i386,FC4/ and two OpenBSD /i386,3.9-stable/ NFS
clients. At irregular intervals, not corresponding to heavy load or
other network/system issues, the two clients start complaining with the
message:
short receive (0/4) from nfs server
server.domain.tld:/exported/directory
Shortly after, usually a few seconds, both are unable to access the NFS
server, as reported in /var/log/messages:
nfs server server.domain.tld:/exported/directory: not responding
At this point, only restarting the client machines allows them to see
again the NFS server and mount the exported directory /umount -f doesn't
work/.
The fstab entries for the NFS mounts are identical on both clients:
server.domain.tld:/exported/directory /mount/point nfs
rw,nodev,nosuid,tcp,soft,intr,-r=8192,-w=8192 0 0
None of the machines experiences heavy load at any point. I have changed
the network cards on both clients. The dmesg for each of the clients is
included below.
Mitko
client-1 # dmesg
OpenBSD 3.9 (GENERIC) #617: Thu Mar 2 02:26:48 MST 2006
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel Pentium II ("GenuineIntel" 686-class, 512KB L2 cache) 398 MHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR
real mem = 200830976 (196124K)
avail mem = 176271360 (172140K)
using 2477 buffers containing 10145792 bytes (9908K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 07/19/01, BIOS32 rev. 0 @ 0xfd801
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
apm0: flags 30102 dobusy 0 doidle 1
pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xf1c50/176 (9 entries)
pcibios0: PCI Interrupt Router at 000:02:0 ("Intel 82371FB ISA" rev 0x00)
pcibios0: PCI bus #1 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x4000
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x03
pci1 at ppb0 bus 1
vga1 at pci1 dev 1 function 0 "S3 Trio3D AGP" rev 0x01
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
pcib0 at pci0 dev 2 function 0 "Intel 82371AB PIIX4 ISA" rev 0x02
pciide0 at pci0 dev 2 function 1 "Intel 82371AB IDE" rev 0x01: DMA,
channel 0 wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <QUANTUM FIREBALLP AS20.5>
wd0: 16-sector PIO, LBA, 19595MB, 40132503 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <SONY, CD-ROM CDU701-F, 1.0r> SCSI0
5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
uhci0 at pci0 dev 2 function 2 "Intel 82371AB USB" rev 0x01: irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
piixpm0 at pci0 dev 2 function 3 "Intel 82371AB Power" rev 0x02: SMI
iic0 at piixpm0
"unknown" at iic0 addr 0x28 not configured
"unknown" at iic0 addr 0x2e not configured
fxp0 at pci0 dev 3 function 0 "Intel 8255x" rev 0x05, i82558: irq 11,
address 00:04:ac:5b:05:66
inphy0 at fxp0 phy 1: i82555 10/100 PHY, rev. 0
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
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
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 ff65 netmask ff65 ttymask ffe7
pctr: 686-class user-level performance counters enabled
mtrr: Pentium Pro MTRR support
dkcsum: wd0 matches BIOS drive 0x80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302
client-2 # dmesg
OpenBSD 3.9 (GENERIC) #617: Thu Mar 2 02:26:48 MST 2006
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel Pentium II ("GenuineIntel" 686-class, 512KB L2 cache) 398 MHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR
real mem = 200830976 (196124K)
avail mem = 176271360 (172140K)
using 2477 buffers containing 10145792 bytes (9908K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 12/07/98, BIOS32 rev. 0 @ 0xfd821
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
apm0: flags 30102 dobusy 0 doidle 1
pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xf2040/176 (9 entries)
pcibios0: PCI Interrupt Router at 000:02:0 ("Intel 82371FB ISA" rev 0x00)
pcibios0: PCI bus #1 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x800
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x03
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x03
pci1 at ppb0 bus 1
vga1 at pci1 dev 1 function 0 "S3 Trio3D AGP" rev 0x01
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
pcib0 at pci0 dev 2 function 0 "Intel 82371AB PIIX4 ISA" rev 0x02
pciide0 at pci0 dev 2 function 1 "Intel 82371AB IDE" rev 0x01: DMA,
channel 0 wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <ST320011A>
wd0: 16-sector PIO, LBA, 19092MB, 39102336 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <SONY, CD-ROM CDU701-F, 1.0r> SCSI0
5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
uhci0 at pci0 dev 2 function 2 "Intel 82371AB USB" rev 0x01: irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
piixpm0 at pci0 dev 2 function 3 "Intel 82371AB Power" rev 0x02: SMI
iic0 at piixpm0
"unknown" at iic0 addr 0x28 not configured
"unknown" at iic0 addr 0x2e not configured
fxp0 at pci0 dev 3 function 0 "Intel 8255x" rev 0x05, i82558: irq 11,
address 00:04:ac:dd:aa:e9
inphy0 at fxp0 phy 1: i82555 10/100 PHY, rev. 0
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
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
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
isapnp0 at isa0 port 0x279: read port 0x203
wss1 at isapnp0 "Crystal Audio, CSC0100, , WSS/SB" port
0x534/4,0x388/4,0x220/16 irq 5 drq 1,0: CS4236/CS4236B (vers 0)
audio0 at wss1
"Crystal Audio, CSC010F, , Disabled" at isapnp0 not configured
"Crystal Audio, CSC0110, , CTRL" at isapnp0 port 0x120/8 not configured
biomask ff45 netmask ff45 ttymask ffc7
pctr: 686-class user-level performance counters enabled
mtrr: Pentium Pro MTRR support
dkcsum: wd0 matches BIOS drive 0x80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302
