SCSI direct-access device appears as multiple lun's

Posted by unixdj on Super User See other posts from Super User or by unixdj
Published on 2010-03-26T12:18:43Z Indexed on 2010/03/26 12:23 UTC
Read the original article Hit count: 625

Filed under:

linux-kernel

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scsi

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centos

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rhel

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PC

I have a similarly described problem to this question:

http://superuser.com/questions/90181/same-scsi-drive-appears-multiple-times-on-the-controller-list

where a SCSI direct-access device appears as multiple lun's, when it should only be one. The device is a SCSI-1 device, the SCSI controller card is an Adaptec AHA-7850 (rev 03), and system is PC / Linux 2.6.

This device worked fine with RHEL4, and appeared as a single device / lun when the OS booted, but I've just tried plugging the device into a newer Linux disto (CentOS 5.4) and it now sees the device as 8 luns; with consequently 8 device files /dev/sgb to /dev/sgi.

Any clues of how to figure out where the problem / fix is, would be great.

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