Question: How Do You Scan Detect New Luns on Linux?

In Linux we can scan the LUNs using the script “rescan-scsi-bus.sh” or triggering some device host files with some values. Note the number of hosts available in the server. If you have more number of hosts file under the directory /sys/class/fc_host, then use the command for each hosts file by replacing the “host0”.

How do I scan new LUNs in Linux?

Follow the steps below to scan the new LUN in OS and then in multipath.

1. Rescan SCSI hosts: # for host in ‘ls /sys/class/scsi_host’ do echo ${host}; echo “- – -” > /sys/class/scsi_host/${host}/scan done.
2. Issue LIP to FC hosts: …
3. Run rescan script from sg3_utils:

How do I find new devices on Linux?

Find out exactly what devices are inside your Linux computer or connected to it. We’ll cover 12 commands for listing your connected devices.
…

1. The mount Command. …
2. The lsblk Command. …
3. The df Command. …
4. The fdisk Command. …
5. The /proc Files. …
6. The lspci Command. …
7. The lsusb Command. …
8. The lsdev Command.