Managing iSCSI into Linux

iscsiadm.sh

# Create ifaces
iscsiadm -m iface -I iface0 -o new
iscsiadm -m iface -I iface0
iscsiadm -m iface -o update -I iface0 -n iface.net_ifacename -v eth0

# Discovery
iscsiadm -m discovery -t sendtargets -p 192.168.0.1 -I iface0 -I iface1

# Delete undesired targets
iscsiadm -m node -T iqn.2014-01.com.example:vol0 -p 192.168.0.1 -o delete

# Login to target
iscsiadm -m node -l -T iqn.2014-01.com.example:vol0 -p 192.168.0.1

# Get device name
iscsiadm -m session -P 3

# Get SCSI WWID
scsi_id -g -u -d /dev/sda

# Get device vendor
cat /sys/block/sdb/device/vendor

# Get device product
cat /sys/block/sdb/device/model

multipath.conf

blacklist {
    wwid "*"
}

blacklist_exceptions {
    wwid "0123456789abcdef"
}

multipaths {
    multipath {
        wwid  0123456789abcdef
        alias DEV0
    }
}

devices {
    device {
        vendor                  "FreeBSD"
        product                 "iSCSI Disk"
        path_grouping_policy    multibus
        getuid_callout          "/sbin/scsi_id -g -u -d /dev/%n"
        features                "1 queue_if_no_path"
        path_checker            readsector0
        failback                immediate
        path_selector           "round-robin 0"
        rr_min_io               10
        rr_weight               uniform
        no_path_retry           fail
    }
}