In this guide I will be setting up a Rocky Linux 8 machine a Veeam Repository – which connects to back end storage (10.9.9.241).

The guide assumes the backup storage and ACLs etc have all been set up.

Install initiator Utilities

dnf -y install iscsi-initiator-utils

Install Mulipathd

dnf -y install device-mapper-multipath

Copy the multipath config

cp /usr/share/doc/device-mapper-multipath/multipath.conf /etc/multipath.conf

Enable multipathd

systemctl --now enable device-mapper-multipath

Set up the multipathing in the initramfs system

dracut --force --add multipath

Edit the iscsi initiator name:

vi /etc/iscsi/initiatorname.iscsi

Change name to eg myhost-01

InitiatorName=iqn.1994-05.com.redhat:myhost-01

Add ISCSI Target

iscsiadm -m discovery -t sendtargets -p 10.9.9.241

Note: If you ever delete an ISCSI Target:

iscsiadm -m discovery -t sendtargets -p 10.9.9.241 -o delete

Log the iscsi into target

iscsiadm -m node --login

Show sessions

iscsiadm -m session -o show

Check mulitpathing

multipath -ll

Output:

Take note of WWID. In this case 36d039ea000296cfd000000d8617251f8)

Edit multipathing config

vi /etc/multipath.conf

Uncomment/Edit – following lines

multipaths {
        multipath {

                path_grouping_policy    multibus

                path_selector           "round-robin 0"
                failback                manual
                rr_weight               priorities
                no_path_retry           5
        }
        multipath {
                wwid                    36d039ea000296cfd000000d8617251f8
                alias                   VEEAM-REP01
        }
}

Restart Multipathd

systemctl restart multipathd

List mulitpaths again

multipath -ll

Output – Note the new name – VEEAM-REP01

mpatha (VEEAM-REP01) dm-3 NETAPP,INF-01-00
size=100T features=’3 queue_if_no_path pg_init_retries 50′ hwhandler=’1 alua’ wp=rw
-+- policy='service-time 0' prio=10 status=active

|- 22:0:0:0 sde 8:64 active ready running

|- 20:0:0:0 sdc 8:32 active ready running

|- 21:0:0:0 sdd 8:48 active ready running

– 23:0:0:0 sdf 8:80 active ready running