External storage on RHEL

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Here’s how you can connect and communicate with external storage on RHEL

 

We will be using multipath daemon

 

To list all the LUNs attached to host

multipath -ll 

 

To reload multipath

service multipathd reload

 

To list and check status of the FC cards

systool -c fc_host -v

 

To rescan for new LUNs

/usr/bin/rescan-scsi-bus.sh

OR

echo “1” > /sys/class/fc_host/host#/issue_lip

echo “1” > /sys/class/fc_host/host#/issue_lip