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Go to SolutionHow to add/remove LUNs from Linux server without reboot
I have a Red Hat 5.8 Linux server running Emulex software and I need to able to present LUNs without rebooting. By searching the knowledge base, I find articles pointing to "emc77913" which no longer seems to exist. Does anyone have a doc that explains this issue? I wish I can go back to Solaris. .
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Posted December 3rd, 2012 06:00
echo "1" > /sys/class/fc_host/host0/issue_lip
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "1" > /sys/class/fc_host/host1/issue_lip
echo "- - -" > /sys/class/scsi_host/host1/scan
where host0 and host1 represent your HBA adapters
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Posted December 3rd, 2012 06:00
I don't have host0 or host1. Can I get the adapter number from "powermt display dev=all". I guess I would have 5 & 7, correct?
7 lpfc sdaf SP B1 active alive 0 0
5 lpfc sde SP B2 active alive 0 0
5 lpfc sdn SP A1 active alive 0 0
7 lpfc sdw SP A2 active alive 0 0
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Posted December 3rd, 2012 07:00
I will check, thanks.
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Posted December 3rd, 2012 07:00
Not really. I have two Emulex cards and two QLogics (used for tape). I'm only concerned about the Emulex cards. So, I figured the powermt output would show which HBA references I need.
drwxr-xr-x 3 root root 0 Nov 27 09:13 host10
drwxr-xr-x 3 root root 0 Dec 3 09:51 host5
drwxr-xr-x 3 root root 0 Nov 27 09:14 host6
drwxr-xr-x 3 root root 0 Nov 27 09:14 host7
drwxr-xr-x 3 root root 0 Nov 27 09:14 host8
drwxr-xr-x 3 root root 0 Nov 27 09:13 host9
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Posted December 3rd, 2012 07:00
can you run ls in this directory and see what they are?
/sys/class/fc_host/
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Posted December 3rd, 2012 08:00
ok, try to run that command on host5 and host7
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Posted December 3rd, 2012 08:00
So, you agree that I can find the HBA instance number from the powermt output?
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Posted December 3rd, 2012 10:00
2 dual port Emulex HBAs. Each HBA has one port connected to two SPs.
Thanks, I will test this shortly.
dynamox
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Posted December 3rd, 2012 09:00
very likely, does it mean that you have 4 Emulex HBAs ..or 2 dual port cards ? lpfc means emulex