external hard drive problems

[Jason Grieves]

Background:
A Venus DS3 Sata to USB 2.0 enclosure with a WD 250 SATA HD.

A post on the web quoted
"Works great with ohci_hcd module, hotplug will pick this up perfectly too."

So I plug this in and my sys log starts going crazy
Dec 25 09:31:55 localhost kernel: [4409554.195000] usb 4-6: new high speed USB
device using ehci_hcd and address 5
Dec 25 09:31:55 localhost kernel: [4409554.278000] scsi4 : SCSI emulation for
USB Mass Storage devices
Dec 25 09:31:55 localhost kernel: [4409554.279000] usb-storage: device found at
5
Dec 25 09:31:55 localhost kernel: [4409554.279000] usb-storage: waiting for
device to settle before scanning
Dec 25 09:31:55 localhost usb.agent[11482]: usb-storage: already loaded
Dec 25 09:32:00 localhost kernel: [4409559.279000] Vendor: WDC WD25 Model:
00KS-00MJB0 Rev: 02.0
Dec 25 09:32:00 localhost kernel: [4409559.279000] Type: Direct-Access
ANSI SCSI revision: 04
Dec 25 09:32:00 localhost kernel: [4409559.285000] SCSI device sdb: 488397168
512-byte hdwr sectors (250059 MB)
Dec 25 09:32:00 localhost kernel: [4409559.285000] sdb: assuming drive cache:
write through
Dec 25 09:32:00 localhost kernel: [4409559.287000] SCSI device sdb: 488397168
512-byte hdwr sectors (250059 MB)
Dec 25 09:32:00 localhost kernel: [4409559.287000] sdb: assuming drive cache:
write through
Dec 25 09:32:00 localhost kernel: [4409559.287000]
/dev/scsi/host4/bus0/target0/lun0: unknown partition table
Dec 25 09:32:00 localhost kernel: [4409559.290000] Attached scsi disk sdb at
scsi4, channel 0, id 0, lun 0
Dec 25 09:32:00 localhost kernel: [4409559.293000] usb-storage: device scan complete
Dec 25 09:32:00 localhost scsi.agent[11528]: sd_mod: loaded sucessfully (for disk)
Dec 25 09:32:01 localhost kernel: [4409559.444000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.444000] end_request: I/O error, dev
sdb, sector 0
Dec 25 09:32:01 localhost kernel: [4409559.444000] printk: 1 messages suppressed.
Dec 25 09:32:01 localhost kernel: [4409559.444000] Buffer I/O error on device
sdb, logical block 0
Dec 25 09:32:01 localhost kernel: [4409559.445000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.445000] end_request: I/O error, dev
sdb, sector 8
Dec 25 09:32:01 localhost kernel: [4409559.447000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.447000] end_request: I/O error, dev
sdb, sector 0
Dec 25 09:32:01 localhost kernel: [4409559.447000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.447000] end_request: I/O error, dev
sdb, sector 16
Dec 25 09:32:01 localhost kernel: [4409559.448000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.448000] end_request: I/O error, dev
sdb, sector 24
Dec 25 09:32:01 localhost kernel: [4409559.448000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.448000] end_request: I/O error, dev
sdb, sector 32
Dec 25 09:32:01 localhost kernel: [4409559.448000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.448000] end_request: I/O error, dev
sdb, sector 40
Dec 25 09:32:01 localhost kernel: [4409559.449000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.449000] end_request: I/O error, dev
sdb, sector 48
Dec 25 09:32:01 localhost kernel: [4409559.449000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.449000] end_request: I/O error, dev
sdb, sector 56
Dec 25 09:32:01 localhost kernel: [4409559.453000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.453000] end_request: I/O error, dev
sdb, sector 512
Dec 25 09:32:01 localhost kernel: [4409559.454000] SCSI error : <4 0 0 0> return
code = 0x70000
Dec 25 09:32:01 localhost kernel: [4409559.454000] end_request: I/O error, dev
sdb, sector 512
Dec 25 09:32:01 localhost kernel: [4409559.495000] usb 4-6: USB disconnect,
address 5

It looks like it is using ehci_hcd and not ohci_hcd. I don't want to throw
ehci_hcd into blacklist as I want to keep all of my other usb devices/hard
drives working. I tried adding ohci_hcd to the usb.rc goofing around with the
usb hotplug scripts, but I am afraid I am just scratching the surface. Internet
articles are a bit scant in this area.

I am not sure why the ohci_hcd driver would matter, rather than the ehci driver.
 Thanks

[Scott James Remnant (Canonical) (canonical-scott)]

hotplug is no longer in the archive