How do I scan a multipath device in Linux?

To online scan new LUNs, complete the following steps:

1. Update the HBA driver by installing or updating the files sg3_utils-*. …
2. Ensure that DMMP is enabled.
3. Ensure that the LUNS that need to be expanded are not mounted and are not used by applications.
4. Run sh rescan-scsi-bus.sh -r .
5. Run multipath -F .
6. Run multipath .

How do I scan a new disk in Linux?

Scanning SCSI DISKS in Redhat Linux

1. Finding the existing disk from fdisk. [[email protected] ~]# fdisk -l |egrep ‘^Disk’ |egrep -v ‘dm-‘ Disk /dev/sda: 21.5 GB, 21474836480 bytes.
2. Find out how many SCSI controller configured. …
3. Scan the SCSI disks using below command. …
4. Verify if the new disks are visible or not.