This may or may not be the same problem, but...

I had a usb flash adaptor that would randomly error out with strange errors 
that would be different from time to time.  I threw it away and my next usb 
flash adaptor did the same thing.  Eventually I looked at it closer and 
realized that the usb cable was loose in the flash adaptor's usb plug.  I 
started using a higher quality usb cable and the problem went away.

Joakim Aronius [joa...@aronius.com] wrote:
> Hi,
> 
> I have an old home server which ran out of disk space so I added a big disk 
> over USB which I use for backup (mounted on /backup). Problem is that it has 
> happened a few times that the USB controller has crapped out resulting in the 
> disk being dismounted and the backup filling out /. I then have to reboot to 
> be able to access the disk again (fsck/mount).
> 
> Is this due to my ancient HW, crappy USB controller card, or is USB mounted 
> disks just less stable? 
> 
> /jkm
> 
> /var/log/messages:
> Dec 17 03:12:17 maya /bsd: ehci0: unrecoverable error, controller halted
> Dec 17 03:12:17 maya /bsd: ehci0: blocking intrs 0x10
> Dec 17 03:12:17 maya /bsd: sd0 detached
> Dec 17 03:12:17 maya /bsd: scsibus0 detached
> Dec 17 03:12:17 maya /bsd: umass0 detached
> Dec 17 03:12:23 maya /bsd: ehci_idone: ex=0xd0f7b700 is done!
> Dec 17 03:12:56 maya last message repeated 6 times
> Dec 17 03:12:56 maya /bsd: uhub0: device problem, disabling port 1
> 
> joa...@maya$ sudo fsck /dev/sd0a
> Password:
> Can't open /dev/rsd0a: Device not configured
> 
> 
> OpenBSD 4.6-stable (GENERIC) #0: Sun Nov 29 21:19:21 CET 2009
>     r...@maya.aronius.com:/usr/src/sys/arch/i386/compile/GENERIC
> cpu0: Intel Pentium III ("GenuineIntel" 686-class) 799 MHz
> cpu0: 
> FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
> real mem  = 267743232 (255MB)
> avail mem = 250073088 (238MB)
> mainbus0 at root
> bios0 at mainbus0: AT/286+ BIOS, date 02/22/00, BIOS32 rev. 0 @ 0xfda74, 
> SMBIOS rev. 2.3 @ 0xf0ea0 (58 entries)
> bios0: vendor Intel Corp. version "VC82010A.10A.0024.P03.0002221044" date 
> 02/22/2000
> bios0: Dell Computer Corporation XPS800
> apm0 at bios0: Power Management spec V1.2
> apm0: AC on, battery charge unknown
> acpi at bios0 function 0x0 not configured
> pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
> pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xf3230/208 (11 entries)
> pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371FB ISA" rev 0x00)
> pcibios0: PCI bus #2 is the last bus
> bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000
> cpu0 at mainbus0: (uniprocessor)
> pci0 at mainbus0 bus 0: configuration mode 1 (bios)
> pchb0 at pci0 dev 0 function 0 "Intel 82820 Host" rev 0x03
> intelagp0 at pchb0
> agp0 at intelagp0: aperture at 0xf8000000, size 0x4000000
> ppb0 at pci0 dev 1 function 0 "Intel 82820 AGP" rev 0x03
> pci1 at ppb0 bus 1
> vga1 at pci1 dev 0 function 0 "ATI Rage Pro" rev 0x5c
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> ppb1 at pci0 dev 30 function 0 "Intel 82801AA Hub-to-PCI" rev 0x02
> pci2 at ppb1 bus 2
> uhci0 at pci2 dev 9 function 0 "VIA VT83C572 USB" rev 0x61: irq 11
> uhci1 at pci2 dev 9 function 1 "VIA VT83C572 USB" rev 0x61: irq 9
> ehci0 at pci2 dev 9 function 2 "VIA VT6202 USB" rev 0x63: irq 10
> usb0 at ehci0: USB revision 2.0
> uhub0 at usb0 "VIA EHCI root hub" rev 2.00/1.00 addr 1
> fxp0 at pci2 dev 10 function 0 "Intel 8255x" rev 0x08, i82559: irq 9, address 
> 00:02:b3:25:72:b2
> inphy0 at fxp0 phy 1: i82555 10/100 PHY, rev. 4
> 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
> ichpcib0 at pci0 dev 31 function 0 "Intel 82801AA LPC" rev 0x02: 24-bit timer 
> at 3579545Hz
> pciide0 at pci0 dev 31 function 1 "Intel 82801AA IDE" rev 0x02: DMA, channel 
> 0 wired to compatibility, channel 1 wired to compatibility
> wd0 at pciide0 channel 0 drive 0: <IC35L060AVV207-0>
> wd0: 16-sector PIO, LBA48, 58644MB, 120103200 sectors
> wd1 at pciide0 channel 0 drive 1: <ST3120026A>
> wd1: 16-sector PIO, LBA48, 114473MB, 234441648 sectors
> wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
> wd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 2
> wd2 at pciide0 channel 1 drive 0: <ST3120026A>
> wd2: 16-sector PIO, LBA48, 114473MB, 234441648 sectors
> wd3 at pciide0 channel 1 drive 1: <ST3320620A>
> wd3: 16-sector PIO, LBA48, 305245MB, 625142448 sectors
> wd2(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> wd3(pciide0:1:1): using PIO mode 4, Ultra-DMA mode 2
> uhci2 at pci0 dev 31 function 2 "Intel 82801AA USB" rev 0x02: irq 10
> ichiic0 at pci0 dev 31 function 3 "Intel 82801AA SMBus" rev 0x02: irq 11
> iic0 at ichiic0
> isa0 at ichpcib0
> isadma0 at isa0
> com0 at isa0 port 0x3f8/8 irq 4: 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
> midi0 at pcppi0: <PC speaker>
> spkr0 at pcppi0
> lpt0 at isa0 port 0x378/4 irq 7
> 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
> usb3 at uhci2: USB revision 1.0
> uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
> biomask ff6d netmask ff6d ttymask ffff
> mtrr: Pentium Pro MTRR support
> umass0 at uhub0 port 1 configuration 1 interface 0 "Western Digital External 
> HDD" rev 2.00/1.75 addr 2
> umass0: using SCSI over Bulk-Only
> scsibus0 at umass0: 2 targets, initiator 0
> sd0 at scsibus0 targ 1 lun 0: <WD, 10EAVS External, 1.75> SCSI2 0/direct fixed
> sd0: 953869MB, 512 bytes/sec, 1953525168 sec total
> softraid0 at root
> root on wd0a swap on wd0b dump on wd0b
> ehci0: unrecoverable error, controller halted
> ehci0: blocking intrs 0x10
> sd0 detached
> scsibus0 detached
> umass0 detached
> ehci_idone: ex=0xd0f7b700 is done!
> ehci_idone: ex=0xd0f7b700 is done!
> ehci_idone: ex=0xd0f7b700 is done!
> ehci_idone: ex=0xd0f7b700 is done!
> ehci_idone: ex=0xd0f7b700 is done!
> ehci_idone: ex=0xd0f7b700 is done!
> ehci_idone: ex=0xd0f7b700 is done!
> uhub0: device problem, disabling port 1
> uid 0 on /: file system full
> uid 0 on /: file system full
> uid 0 on /: file system full

-- 
The past cannot be changed.  The future cannot be guaranteed.

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