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Newly added luns in Linux
This is a discussion on Newly added luns in Linux within the Linux software forums, part of the Linux Getting Started category; Hi All: I am having HDS SAN box and mapped the luns to Linux box (rhel 4) after zoning. To ...
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07-13-2005, 06:02 PM
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Newly added luns in Linux
Hi All:
I am having HDS SAN box and mapped the luns to Linux box (rhel 4) after zoning. To see newly added luns I have to restart my Linux server. The same way, If I use Solaris here, then I can see those luns after running devfsadm command on Solaris. I am looking for same kind of command for Linux, I already tried kudzu but it did not worked. Do you know any other command in Linux which will detect my newly added luns without rebooting the machine. 
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07-14-2005, 12:28 AM
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Try the script http://www.garloff.de/kurt/linux/rescan-scsi-bus.sh; you may also need to read the scsidev.
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07-14-2005, 05:22 PM
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Thanks for your help.
I tried the script but no luck. I have connected to my SAN box using QLogic HBA card. I guess this script is scanning IDE and SCSI slots, It will be usefull when we hotplug/hotswap any HDD. We need to customise it so that it will scan HBA also.
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07-14-2005, 05:31 PM
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Cool.. I tried it agin on another server and it worked. Now I am trying the same script on my previos server. Lets see how it goes.
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07-15-2005, 05:18 PM
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It's only detecting one lun and not detecting others.
I have also tried following commands but result is the same. echo "scsi-qlascan" > /proc/scsi/qla2300/2 : Scans Qlogic card echo "scsi add-single-device 1" > /proc/scsi/scsi : Scans newly added luns. Any other script or solution?
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07-16-2005, 06:39 AM
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Hmm..
Do you have following line in your /etc/modules.conf OR /etc/modprobe.conf : Code:
options scsi_mod max_scsi_luns=255
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07-19-2005, 01:01 PM
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I tried
Quote:
Quote:
Now after adding above line in /etc/modules.conf its not detecting any lun. Any suggestions??
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07-19-2005, 08:38 PM
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Which SCSI adapter you are using i.e. make of your adapter? Some scsi adapters can be configured via /proc/scsi/YOURADAPTER/
Let me know that...
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07-19-2005, 08:47 PM
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Thanks for replying Vivek Sir!!
I am using LSI Logic SCSI adapter and QLogic HBA card. Following are the details:: SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI (rev 0  Fibre Channel: QLogic Corp. QLA2312 Fibre Channel Adapter (rev 02)
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