Hi!
OpenBSD-current locks upon writes to a NFS share with the options
-o tcp,-w=32768
That is, the following locks up:
# mount -o tcp,-w=32768 server:/foo /mnt
# cp /bsd /mnt
No lockup with default mount_nfs options, i.e. udp, or
when reading. However, writes immediately lock up the
machine, but not completely as it still responds to icmp
echo requests, though.
Shell (console) or any other userspace is dead, AFAICT.
OpenBSD-current is the NFS client, the NFS server runs Linux
(openSUSE 11.3 with vanilla 2.6.38.1).
Please note that stable OpenBSD-4.8 has no problems writing
to this NFS server with -o tcp,-w=32768.
Reproducible with OpenBSD-current, tested both in a Linux KVM
virtual machine and on bare metal (it's dmesg appended below).
If you need any other information, just let me know.
Walter
PS: Please add a CC: to my address too when replying. Thanks.
OpenBSD 4.9-current (GENERIC) #1: Tue Mar 29 08:33:57 CEST 2011
root@current.private:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: AMD Athlon(tm) XP 2500+ ("AuthenticAMD" 686-class, 512KB L2 cache) 1.84
GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
real mem = 2146988032 (2047MB)
avail mem = 2101719040 (2004MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 10/01/04, BIOS32 rev. 0 @ 0xfb2c0, SMBIOS
rev. 2.3 @ 0xf0100 (38 entries)
bios0: vendor Award Software International, Inc. version "F5" date 10/01/2004
bios0: Gigabyte Technology Co., Ltd. 7VT600-P-RZ
apm0 at bios0: Power Management spec V1.2 (slowidle)
apm0: AC on, battery charge unknown
acpi at bios0 function 0x0 not configured
pcibios0 at bios0: rev 2.1 @ 0xf0000/0xd9f4
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfd900/240 (13 entries)
pcibios0: PCI Exclusive IRQs: 5 10 11
pcibios0: PCI Interrupt Router at 000:17:0 ("VIA VT82C596A ISA" rev 0x00)
pcibios0: PCI bus #1 is the last bus
bios0: ROM list: 0xc0000/0x8800 0xcc000/0x8000! 0xd4000/0x2000
cpu0 at mainbus0: (uniprocessor)
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "VIA VT8377 PCI" rev 0x80
viaagp0 at pchb0: v3
agp0 at viaagp0: aperture at 0xd0000000, size 0x10000000
ppb0 at pci0 dev 1 function 0 "VIA VT8377 AGP" rev 0x00
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "Matrox MGA G400/G450 AGP" rev 0x85
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
skc0 at pci0 dev 13 function 0 "Marvell Yukon (Belkin F5D5005)" rev 0x12, Yukon
(0x1): irq 5
sk0 at skc0 port A: address 00:30:bd:b2:6f:96
eephy0 at sk0 phy 0: 88E1011 Gigabit PHY, rev. 3
pciide0 at pci0 dev 15 function 0 "VIA VT6420 SATA" rev 0x80: DMA
pciide0: using irq 10 for native-PCI interrupt
pciide1 at pci0 dev 15 function 1 "VIA VT82C571 IDE" rev 0x06: ATA133, channel
0 configured to compatibility, channel 1 configured to compatibility
atapiscsi0 at pciide1 channel 0 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <LITE-ON, COMBO SOHC-5232K, NK0A> ATAPI 5/cdrom
removable
cd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 3
wd0 at pciide1 channel 1 drive 0: <SAMSUNG SP2514N>
wd0: 16-sector PIO, LBA48, 238474MB, 488395055 sectors
wd0(pciide1:1:0): using PIO mode 4, Ultra-DMA mode 6
uhci0 at pci0 dev 16 function 0 "VIA VT83C572 USB" rev 0x81: irq 11
uhci1 at pci0 dev 16 function 1 "VIA VT83C572 USB" rev 0x81: irq 11
uhci2 at pci0 dev 16 function 2 "VIA VT83C572 USB" rev 0x81: irq 5
uhci3 at pci0 dev 16 function 3 "VIA VT83C572 USB" rev 0x81: irq 5
ehci0 at pci0 dev 16 function 4 "VIA VT6202 USB" rev 0x86: irq 10
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "VIA EHCI root hub" rev 2.00/1.00 addr 1
viapm0 at pci0 dev 17 function 0 "VIA VT8237 ISA" rev 0x00
iic0 at viapm0
spdmem0 at iic0 addr 0x50: 1GB DDR SDRAM non-parity PC3200CL3.0
spdmem1 at iic0 addr 0x51: 1GB DDR SDRAM non-parity PC3200CL3.0
auvia0 at pci0 dev 17 function 5 "VIA VT8233 AC97" rev 0x60: irq 10
ac97: codec id 0x414c4760 (Avance Logic ALC655 rev 0)
audio0 at auvia0
vr0 at pci0 dev 18 function 0 "VIA RhineII-2" rev 0x78: irq 11, address
00:0f:ea:bf:9b:0e
ukphy0 at vr0 phy 1: Generic IEEE 802.3u media interface, rev. 10: OUI
0x004063, model 0x0032
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "VIA UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "VIA UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "VIA UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci3: USB revision 1.0
uhub4 at usb4 "VIA UHCI root hub" rev 1.00/1.00 addr 1
isa0 at mainbus0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
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
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
it0 at isa0 port 0x2e/2: IT8705F rev 3, EC port 0x290
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
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 ffff
mtrr: Pentium Pro MTRR support
axe0 at uhub0 port 2 configuration 1 interface 0 "D-Link DUB-E100 rev B1" rev
2.00/0.01 addr 2
axe0: AX88772, address 00:80:c8:3b:2b:dc
rlphy0 at axe0 phy 3: IP101 10/100 PHY, rev. 4
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
root on wd0a swap on wd0b dump on wd0b
