On Fri, Dec 23, 2011 at 07:20:01PM -0600, Albert Chin wrote:
> I have device-mapper-multipath configured with iSCSI. I have two
> interfaces configured to communicate with the iSCSI server. I discover
> and connect with the iSCSI targets as follows:
> (1) # iscsiadm -m discovery -t st -p 10.191.61.1:3260 -I iface1 -P 1
> (2) # iscsiadm -m discovery -t st -p 10.191.62.1:3260 -I iface2 -P 1
> (3) # iscsiadm -m node -p 10.191.61.1:3260 -I iface1 -l
> (4) # iscsiadm -m node -p 10.191.62.1:3260 -I iface2 -l
> # cat /etc/multipath.conf
> defaults {
> selector "round-robin 0"
> udev_dir /dev
> user_friendly_names yes
> }
> [[ snip snip ]]
> # multipath -ll
> winry (3600144f057774b0000004eeab58a0001) dm-24 OI,COMSTAR
> size=500G features='0' hwhandler='0' wp=rw
> |-+- policy='round-robin 0' prio=1 status=active
> | `- 12:0:0:0 sdd 8:48 active ready running
> `-+- policy='round-robin 0' prio=1 status=enabled
> `- 41:0:0:0 sdae 65:224 active ready running
> sai (3600144f057774b0000004ebf539e001d) dm-9 OI,COMSTAR
> size=500G features='0' hwhandler='0' wp=rw
> |-+- policy='round-robin 0' prio=1 status=active
> | `- 17:0:0:0 sdv 65:80 active ready running
> `-+- policy='round-robin 0' prio=1 status=enabled
> `- 54:0:0:0 sdai 66:32 active ready running
> ...
>
> 1. Based on the above multipath -ll output, it seems that I am not
> load-balancing across both NICs. Why not?
Adding path_grouping_policy multibus fixed this.
> 2. When I boot the system, the initiator does not log in to any
> target. Therefore, I need to rerun (3) and (4) above. Why?
Still not sure about this one.
--
albert chin ([email protected])
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