I found a lot of stuff about this on the web, but never an answer that worked. One of the most promising hints was about udev maintaining links in the /dev/disk/by-* directories. This works just fine in CentOS 5, but not CentOS 4. As I was trying to use the iSCSI devices as VMware disks this was particularly frustrating. After banging my head on this for a while, I figured out how to make it work. By default, iSCSI devices don't show up in the /dev/disk/by-* directories maintained by udev under CentOS 4. After looking at the scripts used by udev, it appeared that the scsi_id program was not returning anything for the iSCSI devices. Digging in the manpage and the /etc/scsi_id.config file led me to believe that the devices in question were "blacklisted" and never returned a valid device ID. The fix was to add a line to scsi_id.config to whitelist the particular devices. In my case, the iSCSI devices are provided by on Openfiler box, which shows up in /proc/scsi/scsi like this: Host: scsi2 Channel: 00 Id: 00 Lun: 00 Vendor: Openfile Model: Virtual disk Rev: 0 Type: Direct-Access ANSI SCSI revision: 04 The fix for me was to add the following line to my iscsi_id.config file: vendor=Openfile, model="Virtual disk", options=-g The values for "vendor=" and "model=" will vary with the specific iSCSI target used. After adding this and rebooting, udev now properly maintains the links in /dev/disk/by-id/ for each of the iSCSI devices offered up to my workstation. Hope that helps somebody! -- Jay Leafey - Memphis, TN jay.leafey at mindless.com -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 5177 bytes Desc: S/MIME Cryptographic Signature URL: <http://lists.centos.org/pipermail/centos/attachments/20071113/65f07e95/attachment-0003.bin>