On a Supermicro H8SSL board I started using, moving non-trivial amounts
of data to a USB flash drive hangs.  If the USB has an OpenBSD fs, it
just hangs the cp operation (or whatever) and makes other access
to the drive hang.  With a msdos fs it can completely hang the system
to the point that I can't even log into a different TTY.  Just copying
a small file or doing an initial ls after mounting seems to return OK
(at least at first) but moving a file larger than a couple of Meg hangs.

I tried a 4.9 install and it seems to work fine.  So I upgraded that to
a 5.0 install and that seems to work fine too (although, it just occurs
to me that those were i386 and the 5.1 that is hanging is amd64, should
it matter?).  So it seems something changed between 5.0 and 5.1 that is
causing this.  I looked through CVS web stuff to see if anything jumped
out at me, but I really don't know what I am looking for.

I've also tested with a couple of different USB drives (Sandisk, LG).
I've tried some different BIOS options for the USB.

Anyone else have similar issues or a suggestion of something to try or
what else I can do to provide better info?

Thanks.

dmesg follows:

OpenBSD 5.1 (GENERIC) #181: Sun Feb 12 09:35:53 MST 2012
    dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC
real mem = 3220045824 (3070MB)
avail mem = 3120263168 (2975MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xfb8d0 (50 entries)
bios0: vendor American Megatrends Inc. version "080011" date 03/26/2007
bios0: Supermicro H8SSL
acpi0 at bios0: rev 0
acpi0: sleep states S0 S1 S4 S5
acpi0: tables DSDT FACP APIC OEMB
acpi0: wakeup devices P1P2(S4) USB0(S1) USB1(S1) USB2(S1) PS2K(S4) PS2M(S4) 
SLPB(S1)
acpitimer0 at acpi0: 3579545 Hz, 32 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD Opteron(tm) Processor 148, 2194.83 MHz
cpu0: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW,LAHF
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 1MB 64b/line 
16-way L2 cache
cpu0: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative
cpu0: DTLB 32 4KB entries fully associative, 8 4MB entries fully associative
cpu0: AMD erratum 89 present, BIOS upgrade may be required
cpu0: apic clock running at 199MHz
ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 11, 16 pins
ioapic1 at mainbus0: apid 2 pa 0xfec01000, version 11, 16 pins
ioapic2 at mainbus0: apid 3 pa 0xfec02000, version 11, 16 pins
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (P0P1)
acpiprt2 at acpi0: bus 2 (P1P2)
acpicpu0 at acpi0: PSS
acpibtn0 at acpi0: PWRB
acpibtn1 at acpi0: SLPB
cpu0: Cool'n'Quiet K8 2194 MHz: speeds: 2200 2000 1800 1000 MHz
pci0 at mainbus0 bus 0
ppb0 at pci0 dev 1 function 0 "ServerWorks HT-1000 PCI" rev 0x00
pci1 at ppb0 bus 1
ppb1 at pci1 dev 13 function 0 "ServerWorks HT-1000 PCIX" rev 0xb2
pci2 at ppb1 bus 2
bge0 at pci2 dev 3 function 0 "Broadcom BCM5704C" rev 0x10, BCM5704 B0 
(0x2100): apic 2 int 8, address 00:30:48:56:64:88
brgphy0 at bge0 phy 1: BCM5704 10/100/1000baseT PHY, rev. 0
bge1 at pci2 dev 3 function 1 "Broadcom BCM5704C" rev 0x10, BCM5704 B0 
(0x2100): apic 2 int 9, address 00:30:48:56:64:89
brgphy1 at bge1 phy 1: BCM5704 10/100/1000baseT PHY, rev. 0
pciide0 at pci1 dev 14 function 0 "ServerWorks HT-1000 SATA" rev 0x00: DMA
pciide0: using apic 1 int 11 for native-PCI interrupt
pciide0: port 0: device present, speed: 1.5Gb/s
wd0 at pciide0 channel 0 drive 0: <ST3500320AS>
wd0: 16-sector PIO, LBA48, 476940MB, 976773168 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6
pciide0: port 1: PHY offline
pciide0: port 2: PHY offline
pciide0: port 3: PHY offline
pciide1 at pci1 dev 14 function 1 "ServerWorks HT-1000 SATA" rev 0x00
piixpm0 at pci0 dev 2 function 0 "ServerWorks HT-1000" rev 0x00: polling
iic0 at piixpm0
admcts0 at iic0 addr 0x2c
spdmem0 at iic0 addr 0x50: 1GB DDR SDRAM non-parity PC3200CL3.0
spdmem1 at iic0 addr 0x51: 512MB DDR SDRAM non-parity PC3200CL3.0
spdmem2 at iic0 addr 0x52: 1GB DDR SDRAM non-parity PC3200CL3.0
spdmem3 at iic0 addr 0x53: 512MB DDR SDRAM non-parity PC3200CL3.0
pciide2 at pci0 dev 2 function 1 "ServerWorks HT-1000 IDE" rev 0x00: DMA
atapiscsi0 at pciide2 channel 0 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <TSSTcorp, CDDVDW SH-S222A, SB02> ATAPI 5/cdrom 
removable
atapiscsi1 at pciide2 channel 0 drive 1
scsibus1 at atapiscsi1: 2 targets
sd0 at scsibus1 targ 0 lun 0: <IOMEGA, ZIP 100, 23.D> ATAPI 0/direct removable
cd0(pciide2:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 2
sd0(pciide2:0:1): using PIO mode 0
pcib0 at pci0 dev 2 function 2 "ServerWorks HT-1000 LPC" rev 0x00
ohci0 at pci0 dev 3 function 0 "ServerWorks HT-1000 USB" rev 0x01: apic 1 int 
10, version 1.0, legacy support
ohci1 at pci0 dev 3 function 1 "ServerWorks HT-1000 USB" rev 0x01: apic 1 int 
10, version 1.0, legacy support
ehci0 at pci0 dev 3 function 2 "ServerWorks HT-1000 USB" rev 0x01: apic 1 int 10
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "ServerWorks EHCI root hub" rev 2.00/1.00 addr 1
vga1 at pci0 dev 4 function 0 "ATI Radeon 9200 PRO" rev 0x01
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
radeondrm0 at vga1: apic 2 int 1
drm0 at radeondrm0
"ATI Radeon 9200 PRO Sec" rev 0x01 at pci0 dev 4 function 1 not configured
"ATI Rage XL" rev 0x27 at pci0 dev 5 function 0 not configured
pchb0 at pci0 dev 24 function 0 "AMD AMD64 0Fh HyperTransport" rev 0x00
pchb1 at pci0 dev 24 function 1 "AMD AMD64 0Fh Address Map" rev 0x00
pchb2 at pci0 dev 24 function 2 "AMD AMD64 0Fh DRAM Cfg" rev 0x00
kate0 at pci0 dev 24 function 3 "AMD AMD64 0Fh Misc Cfg" rev 0x00
isa0 at pcib0
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
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
usb1 at ohci0: USB revision 1.0
uhub1 at usb1 "ServerWorks OHCI root hub" rev 1.00/1.00 addr 1
usb2 at ohci1: USB revision 1.0
uhub2 at usb2 "ServerWorks OHCI root hub" rev 1.00/1.00 addr 1
mtrr: Pentium Pro MTRR support
uhidev0 at uhub1 port 1 configuration 1 interface 0 "Logitech USB-PS/2 Optical 
Mouse" rev 2.00/27.30 addr 2
uhidev0: iclass 3/1
ums0 at uhidev0: 8 buttons, Z dir
wsmouse0 at ums0 mux 0
uhidev1 at uhub1 port 2 configuration 1 interface 0 "LITE-ON Technology USB 
NetVista Full Width Keyboard." rev 1.10/1.09 addr 3
uhidev1: iclass 3/1
ukbd0 at uhidev1: 8 modifier keys, 6 key codes
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on wd0a (5060a79edb29573e.a) swap on wd0b dump on wd0b
umass0 at uhub0 port 4 configuration 1 interface 0 "LG Electronics USB Drive" 
rev 2.00/11.00 addr 2
umass0: using SCSI over Bulk-Only
scsibus4 at umass0: 2 targets, initiator 0
sd1 at scsibus4 targ 1 lun 0: <LG, USB Drive, 1100> SCSI0 0/direct removable 
serial.090c1000081300018822
sd1: 3871MB, 512 bytes/sector, 7928832 sectors
sd1 detached
scsibus4 detached
umass0 detached
umass0 at uhub0 port 4 configuration 1 interface 0 "SanDisk U3 Cruzer Micro" 
rev 2.00/2.00 addr 2
umass0: using SCSI over Bulk-Only
scsibus4 at umass0: 2 targets, initiator 0
sd1 at scsibus4 targ 1 lun 0: <SanDisk, Cruzer, 7.01> SCSI0 0/direct removable
sd1: 3835MB, 512 bytes/sector, 7856127 sectors
cd1 at scsibus4 targ 1 lun 1: <SanDisk, Cruzer, 7.01> SCSI0 5/cdrom removable




--TimH

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