[stgt] Multiple active paths

[Mark Ruys]

Hi,

I've just succesfully set up an tgtd target on a CentOS 5.5 machine 
having four (non-bonded) nic's. My initiator connects as follows:

billy (1IET_00010001) dm-3 IET,VIRTUAL-DISK
[size=400G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][active]
  \_ 17:0:0:1  sdh  8:112  [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 19:0:0:1  sdo  8:224  [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 20:0:0:1  sdz  65:144 [active][ready]
\_ round-robin 0 [prio=1][enabled]
  \_ 18:0:0:1  sdj  8:144  [active][ready]

So the path through /dev/sdh is active and used. For another EMC target, 
I get:

bulbby (360060160b9781b008488bd4f0e2fde11) dm-7 DGC,RAID 10
[size=15G][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=2][active]
  \_ 14:0:0:5  sdr  65:16  [active][ready]
  \_ 16:0:0:5  sdy  65:128 [active][ready]
\_ round-robin 0 [prio=0][enabled]
  \_ 13:0:0:5  sdaq 66:160 [active][ready]
  \_ 15:0:0:5  sdar 66:176 [active][ready]

As I understand it, in this case both /dev/sdr and /dev/sdy are used 
doubling the network throuhgput capacity. How can I achieve this with 
tgtd? I tried to find an answer in this mailing list in vain.

Thanks,

Mark

/etc/tgt/targets.conf:

default-driver iscsi

<target iqn.2010-05.net.maas:rijn.tgt>
         backing-store /dev/VG00/Billy
         initiator-address 192.168.91.0/24
         initiator-address 192.168.92.0/24
</target>


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