USB Drive Controller Failure and Shared IRQ

[Roger Oberholtzer]

On Fri, 2005-02-18 at 14:08, Matthew Carpenter wrote:
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> Hi all,
> 
> I used to consider myself pretty great with HW (back when we had to
> control everything).  Since PCI and auto-resource management came about
> I've kinda just let the machines do what they wanted to except where ISA
> was involved.
> 
> I have had a machine that I've been trying to do a drive-backup from a
> SATA drive to a USB-attached drive (using RSYNC for offsite backup.
> Very slick).  All goes well for about an hour.  Then errors start
> happening and the backup never completes.  A reboot is necessary for the
> drive to even be recongnized again.

Iomega USB and FireWire disks (e.g., Peerless) state that fast file
changes can be a problem. Things like deleting hundreds of files very
fast (e.g., rm -rf *) can confuse the device. We use these to store
hundreds of thousands of images for transport to another location. We
have found that if we delete these files, the disks become odd. So, our
standard procedure is to reformat them instead. Odd but true. All this
is with FAT32, which is used in this case so winders PCs can access the
files as well.

Maybe you are experiencing something along these lines.

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? Roger Oberholtzer          ?   E-mail: roger at opq.se        ?
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