Administrator Guide

Live Volume with Linux/UNIX
90 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
10.6 Identify parent SC Series arrays for Linux storage paths
This section provides information on how to correlate the Linux device paths to the SC Series arrays. The
following exercise demonstrates the process to show the Fibre Channel ports on the SC Series arrays
associated with each Linux device paths. The same process also applies to iSCSI transport. The information
might be helpful for troubleshooting path failures or performance related issues.
a) Show the paths information with multipath command. Note the H:C:T (Host adapter, Controller,
Target) and the sd devices information. In this example, a Live Volume has eight storage paths.
# multipath -ll mpatha
mpatha (36000d31000ed1f0000000000000000b6) dm-2 COMPELNT,Compellent Vol
size=100G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=enabled
|- 0:0:0:1 sdb 8:16 active ready running
|- 7:0:0:1 sde 8:64 active ready running
|- 0:0:15:1 sdh 8:112 active ready running
|- 7:0:15:1 sdi 8:128 active ready running
|- 0:0:3:1 sdc 8:32 active ready running
|- 7:0:3:1 sdf 8:80 active ready running
|- 0:0:4:1 sdd 8:48 active ready running
`- 7:0:4:1 sdg 8:96 active ready running
b) Execute the lsscsi command to show the transport information. Note the transport column (third field)
contains the SC Series target port number.
# lsscsi --transport
[0:0:0:1] disk fc:0x5000d31000ed1f220x1b0b02 /dev/sdb
[0:0:3:1] disk fc:0x5000d31000ed21210x1b1201 /dev/sdc
[0:0:4:1] disk fc:0x5000d31000ed21220x1b1301 /dev/sdd
[0:0:15:1] disk fc:0x5000d31000ed1f210x1b0a02 /dev/sdh
[1:0:0:0] disk sata: /dev/sda
[5:0:0:0] cd/dvd sata: /dev/sr0
[7:0:0:1] disk fc:0x5000d31000ed1f260x1c0b02 /dev/sde
[7:0:3:1] disk fc:0x5000d31000ed21250x1c1201 /dev/sdf
[7:0:4:1] disk fc:0x5000d31000ed21260x1c1301 /dev/sdg
[7:0:15:1] disk fc:0x5000d31000ed1f250x1c0a02 /dev/sdi