Presenting LUN over FC with multiple paths (qla2xxx, targetcli)

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Hello,

I want to present LUNs from my linux box to one of the Storage
Virtualizators (FalconStor in that case). I did simple configuration:

/> ls
  o- qla2xxx ...........................................................................................................
[2 Targets]
  | o- 50:01:43:80:24:d7:af:08
...........................................................................................
[enabled]
  | | o- acls .............................................................................................................
[2 ACLs]
  | | | o- 50:01:43:80:24:d7:ad:18
..................................................................................
[1 Mapped LUN]
  | | | | o- mapped_lun0
...............................................................................................
[lun0 (rw)]
  | | | o- 50:01:43:80:24:d7:ae:80
..................................................................................
[1 Mapped LUN]
  | | |   o- mapped_lun0
...............................................................................................
[lun0 (rw)]
  | | o- luns ..............................................................................................................
[1 LUN]
  | |   o- lun0
....................................................................................
[iblock/cache1pri (/dev/fioa1)]
  | o- 50:01:43:80:24:d7:af:0a
...........................................................................................
[enabled]
  |   o- acls .............................................................................................................
[2 ACLs]
  |   | o- 50:01:43:80:24:d7:ad:1a
..................................................................................
[1 Mapped LUN]
  |   | | o- mapped_lun0
...............................................................................................
[lun0 (rw)]
  |   | o- 50:01:43:80:24:d7:ae:82
..................................................................................
[1 Mapped LUN]
  |   |   o- mapped_lun0
...............................................................................................
[lun0 (rw)]
  |   o- luns ..............................................................................................................
[1 LUN]
  |     o- lun0
....................................................................................
[iblock/cache1pri (/dev/fioa1)]
  o- tcm_fc .............................................................................................................
[0 Target]

As a result - I can see on the virtualizator "iblock/cache1pri" via
two paths. So far so good.

But -  Unfortunatelly I cannot use the presented space because I'm
getting the message on the virtualizator: "LUN - Not Supported for
path failover and load ballancing"

Can anyone pls advice?

Rgds,
Konrad
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