USB Drive Controller Failure and Shared IRQ

[Matthew Carpenter]

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Not sure about this one.  I've not seen these oddities on other machines
doing the same thing.  Still, I'll keep it in mind.  Thanks.

Roger Oberholtzer wrote:
| 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.
|
| +????????????????????????????+???????????????????????????????+
| ? Roger Oberholtzer          ?   E-mail: roger at opq.se        ?
| ? OPQ Systems AB             ?      WWW: http://www.opq.se/  ?
| ? Nybrogatan 66 nb           ?    Phone: Int + 46 8   314223 ?
| ? 114 41 Stockholm           ?   Mobile: Int + 46 733 621657 ?
| ? Sweden                     ?      Fax: Int + 46 8   314223 ?
| +????????????????????????????+???????????????????????????????+
|
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|
|
|

- --
Matthew Carpenter
matt at eisgr.com                          http://www.eisgr.com/

Enterprise Information Systems
* Network Server Appliances
* Security Consulting, Incident Handling & Forensics
* Network Consulting, Integration & Support
* Web Integration and E-Business
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