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hba scan emc symmetrix

Posted on 2011-09-29
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Last Modified: 2012-05-12

Is lun_scan all the best way to re-scan the hba for new lun with emulex hba on emc symmetrix storage.
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Question by:lolaferrari
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woolmilkporc earned 500 total points
ID: 36891044
Hi,

this is what Emulex say:

The Emulex Linux LUN/target scan script enables you to dynamically (without a reboot, driver unload/reload, or HBA reset) discover new targets and LUNs (on new or existing targets) that have come online. This feature is supported via standard Linux mechanisms. The script enables you to automatically discover all new devices.

Basically the lun_scan script runs

echo '- - -' > /sys/class/scsi_host/host<hba-instance>/scan

which is the "classic" way. It's not hardware-specific, but standard Linux.

If you run

/usr/sbin/lpfc/lun_scan all

the script wil determine the single hba instances on its own.

So lun_scan could make your life a bit easier. Why not use it then?

wmp

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by:lolaferrari
ID: 36921352
many thanks!
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