Re: Problems with USB disk

From: Bill Davidsen
Date: Fri Aug 10 2007 - 00:50:54 EST


Greg KH wrote:
On Tue, Aug 07, 2007 at 10:26:15PM +0200, Niels wrote:
Hi,

I'm having problems with a new 500 GB USB disk. It works, but sometimes I
get these in dmesg:


usb 1-3: reset high speed USB device using ehci_hcd and address 2
usb 5-1: USB disconnect, address 2
drivers/usb/class/usblp.c: usblp0: removed
sd 0:0:0:0: Device not ready: <6>: Sense Key : 0x2 [current]
: ASC=0x4 ASCQ=0x2
end_request: I/O error, dev sda, sector 254148215
sd 0:0:0:0: Device not ready: <6>: Sense Key : 0x2 [current]
: ASC=0x4 ASCQ=0x2
end_request: I/O error, dev sda, sector 252434023
EXT3-fs error (device sda1): ext3_find_entry: reading directory #15761836
offset 0


There's also a printer connected. This is on a pci/usb2 card. When the above
happens, I get I/O errors. When I mount the drive next, there are errors
and often missing files. Quite annoying!

Kernel is 2.6.21

What's going on?

You have a low voltage issue, or a bad cable. The device is
electronically disconnecting itself. Try using a externally-powered
hub, or a new cable.

I see the external drive becoming read-only, although I haven't checked the dmesg for the events, since other things in my system generate a bunch of output I have to wade through.

New cable, separate power, doesn't do it under 2.6.20-* Fedora or 2.6.21.x kernel.org kernels.

I'll check the dmesg next time it happens, but I doubt a kernel version change would heal the hardware issues you mention.


--
Bill Davidsen <davidsen@xxxxxxx>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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