Re: [PLUG] USB memory stick

Jeff Abrahamson on 9 Nov 2005 19:23:37 -0000


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Re: [PLUG] USB memory stick


On Wed, Nov 09, 2005 at 12:31:47PM -0600, Greg Lopp wrote:
> > Nov 8 10:34:13 astra kernel: sdc: Write Protect is off
> > Nov 8 10:34:13 astra kernel: sdc: Mode Sense: 0b 00 00 08
> > Nov 8 10:34:13 astra kernel: sdc: assuming drive cache: write through
> > Nov 8 10:34:13 astra kernel: SCSI device sdc: 503808 512-byte hdwr sectors (258 MB)
> > Nov 8 10:34:13 astra kernel: sdc: Write Protect is off
> > Nov 8 10:34:13 astra kernel: sdc: Mode Sense: 0b 00 00 08
> > Nov 8 10:34:13 astra kernel: sdc: assuming drive cache: write through
> > 
> >
> Hmmm. A little odd to be repeating that.......
I have hotplug installed, magical things happen. But it mostly seems
to do the right thing.
> > Nov 8 10:34:13 astra kernel: usb-storage: device scan complete
> > Nov 8 10:34:13 astra scsi.agent[25369]: sd_mod: loaded successfully (for disk)
> > 
> >
> ???
Hotplug thought it was important?
> > Nov 8 10:34:14 astra kernel: Buffer I/O error on device sdc1, logical block 508378384
> > Nov 8 10:34:14 astra kernel: Buffer I/O error on device sdc1, logical block 508378384
> > Nov 8 10:34:14 astra kernel: Buffer I/O error on device sdc1, logical block 508378412
> > Nov 8 10:34:14 astra last message repeated 5 times
> > Nov 8 10:34:14 astra kernel: Buffer I/O error on device sdc1, logical block 508378405
> > Nov 8 10:34:14 astra kernel: Buffer I/O error on device sdc1, logical block 508378405
> > 
> >
> 50,837,884 > 503,808
> A mass storage device appears as a linear array of sectors to the 
> kernel...er fs, whichever. The deviec informed us earlier that it has 
> only 503808 of these sectors. Why on earth would the kernel be trying 
> to look at logical sector 50,837,884? Could there be a funky partition 
> table on the device? Can you read the partition table using "fdisk 
> /dev/sdc" ? 
Thanks. I'll try that next time I have access to the device.
Thanks also to tak for useful suggestions.
-- 
 Jeff
 Jeff Abrahamson <http://www.purple.com/jeff/> +1 215/837-2287
 GPG fingerprint: 1A1A BA95 D082 A558 A276 63C6 16BF 8C4C 0D1D AE4B

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