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I have some iSCSI targets mounted on a linux host as /dev/sd*. How can I query the iSCSI ID from the device node?

This is on CentOS 5, using the iscsi-initiator-utils package.

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4 Answers

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If you look into 

 /dev/disk/by-path/

you should see links to your devices

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Fabulous, thank you. – kdt Mar 14 '11 at 15:41
Thanks Daniel! I didn't know that. – sciurus Mar 16 '11 at 2:08
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iscsiadm --mode session -P 3

That will produce lots of extraneous output. You care about the Target line that comes before the Attached scsi disk line for the device in question.

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Yep, that works. – kdt Mar 15 '11 at 12:19
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I'm pretty sure you can get the ID by issuing iscsiadm -m discovery -t st -p <target-ip>.

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Unfortunately that command only lists all IDs for a server, it doesn't let me match them up with local device nodes. – kdt Mar 14 '11 at 15:13
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Does lsscsi --verbose give you this information (haven't played with iSCSI much)?

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Doesn't seem to. There's also a --long option, but no joy there either. It prints handy paths into /sys for the device, but I can't see any iSCSI IDs in there either. – kdt Mar 14 '11 at 15:34
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