Hi,

I'm trying to use USB disks as backup devices and I'm finding that I
have problems when I plug in more than two USB drives.  I'm using 250G
laptop disks powered from the USB cable.

Is anyone else seeing this sort of problem?  Would an upgrade to 4.2
help?

The first two always seem to work fine (with the "sd*" device allocated)
as per:
--
umass1 at uhub6 port 3 configuration 1 interface 0
umass1: LaCie SA LaCie Hard Drive USB, rev 2.00/0.00, addr 4
umass1: using SCSI over Bulk-Only
scsibus3 at umass1: 2 targets
sd2 at scsibus3 targ 1 lun 0: <WDC WD25, 00BEVS-11UST0, > SCSI2 0/direct
fixed
sd2: 238475MB, 238475 cyl, 64 head, 32 sec, 512 bytes/sec, 488397168 sec
total
--

However, the third disk I plug in gives me strife.

It will get an "sd*" device allocated some of the time (about 1 in 3).
Sometimes I have a run where it works ok 4 times in a row and sometimes
if fails 5 or more times before it works.
---
umass2: at uhub6 port 1 (addr 5) disconnected
scsibus4 detached
umass2 detached
umass2 at uhub6 port 1 configuration 1 interface 0
umass2: LaCie SA LaCie Hard Drive USB, rev 2.00/0.00, addr 5
umass2: using SCSI over Bulk-Only
scsibus4 at umass2: 2 targets
umass2: BBB reset failed, IOERROR
umass2: BBB bulk-in clear stall failed, IOERROR
umass2: BBB bulk-out clear stall failed, IOERROR
---
Give up waiting and re-plug the disk

---
umass2: at uhub6 port 1 (addr 5) disconnected
scsibus4 detached
umass2 detached
umass2 at uhub4 port 5 configuration 1 interface 0
umass2: LaCie SA LaCie Hard Drive USB, rev 2.00/0.00, addr 5
umass2: using SCSI over Bulk-Only
scsibus4 at umass2: 2 targets
umass2: BBB reset failed, IOERROR
umass2: BBB bulk-in clear stall failed, IOERROR
umass2: BBB bulk-out clear stall failed, IOERROR
umass2: BBB reset failed, IOERROR
umass2: BBB bulk-in clear stall failed, IOERROR
umass2: BBB bulk-out clear stall failed, IOERROR
---
And again

---
umass2: at uhub4 port 5 (addr 5) disconnected
scsibus4 detached
umass2 detached
umass2 at uhub4 port 5 configuration 1 interface 0
umass2: LaCie SA LaCie Hard Drive USB, rev 2.00/0.00, addr 5
umass2: using SCSI over Bulk-Only
scsibus4 at umass2: 2 targets
umass2: BBB bulk-in clear stall failed, IOERROR
umass2: BBB bulk-out clear stall failed, IOERROR
umass2: BBB reset failed, IOERROR
umass2: BBB bulk-in clear stall failed, IOERROR
umass2: BBB bulk-out clear stall failed, IOERROR
umass2: BBB reset failed, IOERROR
umass2: BBB bulk-in clear stall failed, IOERROR
umass2: BBB bulk-out clear stall failed, IOERROR
---
yada yada

---
umass2: at uhub6 port 4 (addr 5) disconnected
scsibus4 detached
umass2 detached
umass2 at uhub6 port 4 configuration 1 interface 0
umass2: LaCie SA LaCie Hard Drive USB, rev 2.00/0.00, addr 5
umass2: using SCSI over Bulk-Only
scsibus4 at umass2: 2 targets
sd3 at scsibus4 targ 1 lun 0: <WDC WD25, 00BEVS-11UST0, > SCSI2 0/direct
fixed
sd3: 238475MB, 238475 cyl, 64 head, 32 sec, 512 bytes/sec, 488397168 sec
total
---
And it worked..

The other disks don't seem to be affected by this.

If I unplug 2 disks (leave one plugged in) and the plug them back in
again, it's again the third disk which misbehaves no matter which disk I
plug in first (doesn't seem to depend on the physical disk involved).

I'm plugging the disks into an external powered 4 port hub:
----
uhub6 at uhub4 port 3
uhub6: Genesys Logic USB2.0 Hub, rev 2.00/7.02, addr 2
uhub6: 4 ports with 4 removable, self powered, single transaction
translator

----

But I get the same errors if I plug the third disk into the on-board USB
ports instead.

It also doesn't seem to matter if the disks are powered separately or
powered from the USB port.

TIA
dave
---
Dave Edwards


My dmesg:
---------

OpenBSD 4.1 (GENERIC.MP) #1225: Sat Mar 10 19:23:18 MST 2007
    [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC.MP
cpu0: Intel(R) Xeon(R) CPU 5140 @ 2.33GHz ("GenuineIntel" 686-class)
2.34 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,
CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST
,TM2,CX16,xTPR
real mem  = 3487494144 (3405756K)
avail mem = 3195600896 (3120704K)
using 4278 buffers containing 174497792 bytes (170408K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+ BIOS, date 12/31/99, BIOS32 rev. 0 @ 0xf0000,
SMBIOS rev. 2.3 @ 0xee000 (67 entries)
bios0: HP ProLiant DL360 G5
pcibios0 at bios0: rev 3.0 @ 0xf0000/0x2000
pcibios0: PCI BIOS has 9 Interrupt Routing table entries
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 6321ESB LPC" rev
0x00)
pcibios0: PCI bus #22 is the last bus
bios0: ROM list: 0xc0000/0xb000 0xcc400/0x4000! 0xd0400/0x1800
0xe6000/0x2000!
acpi at mainbus0 not configured
ipmi0 at mainbus0: version 2.0 interface KCS iobase 0xca2/2 spacing 1
mainbus0: Intel MP Specification (Version 1.4)
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 333 MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Xeon(R) CPU 5140 @ 2.33GHz ("GenuineIntel" 686-class)
2.34 GHz
cpu1:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,
CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST
,TM2,CX16,xTPR
cpu2 at mainbus0: apid 6 (application processor)
cpu2: Intel(R) Xeon(R) CPU 5140 @ 2.33GHz ("GenuineIntel" 686-class)
2.34 GHz
cpu2:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,
CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST
,TM2,CX16,xTPR
cpu3 at mainbus0: apid 7 (application processor)
cpu3: Intel(R) Xeon(R) CPU 5140 @ 2.33GHz ("GenuineIntel" 686-class)
2.34 GHz
cpu3:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,
CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST
,TM2,CX16,xTPR
mainbus0: bus 0 is type PCI
mainbus0: bus 1 is type PCI
mainbus0: bus 2 is type PCI
mainbus0: bus 3 is type PCI
mainbus0: bus 4 is type PCI
mainbus0: bus 5 is type PCI
mainbus0: bus 6 is type PCI
mainbus0: bus 9 is type PCI
mainbus0: bus 10 is type PCI
mainbus0: bus 11 is type PCI
mainbus0: bus 14 is type PCI
mainbus0: bus 15 is type PCI
mainbus0: bus 16 is type PCI
mainbus0: bus 19 is type PCI
mainbus0: bus 22 is type PCI
mainbus0: bus 39 is type ISA
ioapic0 at mainbus0: apid 8 pa 0xfec00000, version 20, 24 pins
ioapic1 at mainbus0: apid 9 pa 0xfec80000, version 20, 24 pins
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 vendor "Intel", unknown product 0x25d8
rev 0xb1
ppb0 at pci0 dev 2 function 0 "Intel 5000 PCIE" rev 0xb1
pci1 at ppb0 bus 9
ppb1 at pci1 dev 0 function 0 "Intel 6321ESB PCIE" rev 0x01
pci2 at ppb1 bus 10
ppb2 at pci2 dev 0 function 0 "Intel 6321ESB PCIE" rev 0x01
pci3 at ppb2 bus 11
ppb3 at pci2 dev 1 function 0 "Intel 6321ESB PCIE" rev 0x01
pci4 at ppb3 bus 14
ppb4 at pci2 dev 2 function 0 "Intel 6321ESB PCIE" rev 0x01
pci5 at ppb4 bus 15
ppb5 at pci1 dev 0 function 3 "Intel 6321ESB PCIE-PCIX" rev 0x01
pci6 at ppb5 bus 16
ppb6 at pci0 dev 3 function 0 "Intel 5000 PCIE" rev 0xb1
pci7 at ppb6 bus 6
ciss0 at pci7 dev 0 function 0 "Hewlett-Packard Smart Array" rev 0x01:
apic 8 int 16 (irq 5)
ciss0: 1 LD, HW rev 1, FW 2.08/2.08
scsibus0 at ciss0: 1 targets
sd0 at scsibus0 targ 0 lun 0: <HP, LOGICAL VOLUME, 2.08> SCSI3 0/direct
fixed
sd0: 699911MB, 699911 cyl, 64 head, 32 sec, 512 bytes/sec, 1433418544
sec total
ppb7 at pci0 dev 4 function 0 "Intel 5000 PCIE" rev 0xb1
pci8 at ppb7 bus 19
ppb8 at pci0 dev 5 function 0 "Intel 5000 PCIE" rev 0xb1
pci9 at ppb8 bus 22
ppb9 at pci0 dev 6 function 0 vendor "Intel", unknown product 0x25e6 rev
0xb1
pci10 at ppb9 bus 2
ppb10 at pci10 dev 0 function 0 "ServerWorks PCIE-PCIX" rev 0xc3
pci11 at ppb10 bus 3
bnx0 at pci11 dev 0 function 0 "Broadcom BCM5708" rev 0x12: apic 8 int
18 (irq 10)
ppb11 at pci0 dev 7 function 0 "Intel 5000 PCIE" rev 0xb1
pci12 at ppb11 bus 4
ppb12 at pci12 dev 0 function 0 "ServerWorks PCIE-PCIX" rev 0xc3
pci13 at ppb12 bus 5
bnx1 at pci13 dev 0 function 0 "Broadcom BCM5708" rev 0x12: apic 8 int
19 (irq 10)
pchb1 at pci0 dev 16 function 0 "Intel 5000 Error Reporting" rev 0xb1
pchb2 at pci0 dev 16 function 1 "Intel 5000 Error Reporting" rev 0xb1
pchb3 at pci0 dev 16 function 2 "Intel 5000 Error Reporting" rev 0xb1
pchb4 at pci0 dev 17 function 0 "Intel 5000 Reserved" rev 0xb1
pchb5 at pci0 dev 19 function 0 "Intel 5000 Reserved" rev 0xb1
pchb6 at pci0 dev 21 function 0 "Intel 5000 FBD" rev 0xb1
pchb7 at pci0 dev 22 function 0 "Intel 5000 FBD" rev 0xb1
uhci0 at pci0 dev 29 function 0 "Intel 6321ESB USB" rev 0x09: apic 8 int
16 (irq 5)
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
uhci1 at pci0 dev 29 function 1 "Intel 6321ESB USB" rev 0x09: apic 8 int
17 (irq 7)
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2 at pci0 dev 29 function 2 "Intel 6321ESB USB" rev 0x09: apic 8 int
18 (irq 10)
usb2 at uhci2: USB revision 1.0
uhub2 at usb2
uhub2: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhci3 at pci0 dev 29 function 3 "Intel 6321ESB USB" rev 0x09: apic 8 int
19 (irq 10)
usb3 at uhci3: USB revision 1.0
uhub3 at usb3
uhub3: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
ehci0 at pci0 dev 29 function 7 "Intel 6321ESB USB" rev 0x09: apic 8 int
16 (irq 5)
usb4 at ehci0: USB revision 2.0
uhub4 at usb4
uhub4: Intel EHCI root hub, rev 2.00/1.00, addr 1
uhub4: 8 ports with 8 removable, self powered
ppb13 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0xd9
pci14 at ppb13 bus 1
vga1 at pci14 dev 3 function 0 "ATI ES1000" rev 0x02
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
"Compaq iLO" rev 0x03 at pci14 dev 4 function 0 not configured
"Compaq iLO" rev 0x03 at pci14 dev 4 function 2 not configured
uhci4 at pci14 dev 4 function 4 "Hewlett-Packard USB" rev 0x00: apic 8
int 22 (irq 10)
usb5 at uhci4: USB revision 1.0
uhub5 at usb5
uhub5: Hewlett-Packard UHCI root hub, rev 1.00/1.00, addr 1
uhub5: 2 ports with 2 removable, self powered
"Hewlett-Packard IPMI" rev 0x00 at pci14 dev 4 function 6 not configured
ichpcib0 at pci0 dev 31 function 0 "Intel 6321ESB LPC" rev 0x09: PM
disabled
pciide0 at pci0 dev 31 function 1 "Intel 6321ESB IDE" rev 0x09: DMA,
channel 0 configured to compatibility, channel 1 configured to
compatibility
atapiscsi0 at pciide0 channel 0 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <TEAC, DV-W28ECW, G.C4> SCSI0 5/cdrom
removable
cd0(pciide0:0:0): using PIO mode 4, DMA mode 2
pciide0: channel 1 disabled (no drives)
isa0 at ichpcib0
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
npx0 at isa0 port 0xf0/16: reported by CPUID; 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
pctr: 686-class user-level performance counters enabled
mtrr: Pentium Pro MTRR support
uhub6 at uhub4 port 3
uhub6: Genesys Logic USB2.0 Hub, rev 2.00/7.02, addr 2
uhub6: 4 ports with 4 removable, self powered, single transaction
translator
umass0 at uhub6 port 2 configuration 1 interface 0
umass0: LaCie SA LaCie Hard Drive USB, rev 2.00/0.00, addr 3
umass0: using SCSI over Bulk-Only
scsibus2 at umass0: 2 targets
sd1 at scsibus2 targ 1 lun 0: <WDC WD25, 00BEVS-11UST0, > SCSI2 0/direct
fixed
sd1: 238475MB, 238475 cyl, 64 head, 32 sec, 512 bytes/sec, 488397168 sec
total
uhidev0 at uhub5 port 1 configuration 1 interface 0
uhidev0: HP Virtual Keyboard, rev 1.10/0.02, addr 2, iclass 3/1
ukbd0 at uhidev0: 8 modifier keys, 6 key codes, country code 33
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev1 at uhub5 port 1 configuration 1 interface 1
uhidev1: HP Virtual Keyboard, rev 1.10/0.02, addr 2, iclass 3/1
ums0 at uhidev1
ums0: X report 0x0002 not supported
uhub7 at uhub5 port 2
uhub7: HP Virtual Hub, rev 1.10/0.01, addr 3
uhub7: 7 ports with 7 removable, self powered
dkcsum: sd0 matches BIOS drive 0x80
dkcsum: sd1 matches BIOS drive 0x81
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
bnx1: address 00:1b:78:ca:9b:58
brgphy0 at bnx1 phy 1: BCM5708C 10/100/1000baseT PHY, rev. 6
bnx0: address 00:1b:78:ca:9b:3e
brgphy1 at bnx0 phy 1: BCM5708C 10/100/1000baseT PHY, rev.
------------------------

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