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Date:      Fri, 22 Sep 2017 10:36:45 +0500
From:      "Eugene M. Zheganin" <emz@norma.perm.ru>
To:        freebsd-stable@freebsd.org
Subject:   ctld: only 579 iSCSI targets can be created
Message-ID:  <04e8820c2c6cc7a95d6ffdf257f00f7d@norman-vivat.ru>

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Hi,

I have old 11-STABLE as an iSCSI server, but out of the blue I 
encountered weird problem: only 579 targets can be created. I mean, I am 
fully aware that the out-of-the-box limit is 128 targets, with is 
enforced by the CTL_MAX_PORTS define, and I've set it to 1024 (and of 
course rebuilt and installed a new kernel), but when I add more that 579 
targets I start to get the protocol errors:

Sep 22 10:16:48 san1 ctld[8657]: 10.0.3.127 
(iqn.1991-05.com.microsoft:worker296): protocol error: received invalid 
opcode 0x4
Sep 22 10:16:48 san1 ctld[8658]: 10.0.3.127 
(iqn.1991-05.com.microsoft:worker296): protocol error: received invalid 
opcode 0x46
Sep 22 10:17:31 san1 ctld[8746]: 10.0.3.127 
(iqn.1991-05.com.microsoft:worker296): protocol error: received invalid 
opcode 0x4
Sep 22 10:17:31 san1 ctld[8747]: 10.0.3.127 
(iqn.1991-05.com.microsoft:worker296): protocol error: received invalid 
opcode 0x46
Sep 22 10:19:58 san1 ctld[9190]: 10.0.3.127 
(iqn.1991-05.com.microsoft:worker296): protocol error: received invalid 
opcode 0x4
Sep 22 10:19:58 san1 ctld[9191]: 10.0.3.127 
(iqn.1991-05.com.microsoft:worker296): protocol error: received invalid 
opcode 0x46
Sep 22 10:21:33 san1 ctld[9518]: 10.0.3.127 
(iqn.1991-05.com.microsoft:worker296): protocol error: received invalid 
opcode 0x4
Sep 22 10:21:33 san1 ctld[9519]: 10.0.3.127 
(iqn.1991-05.com.microsoft:worker296): protocol error: received invalid 
opcode 0x46

So, the question is - is it possible to have more than 579 targets and 
if yes - how can this be achieved ?
Right now I'm experimenting with extending luns, not targets. One may 
think that I am merey greedy, but the thing is, I really have hundreds 
of initiatorsm and it's just logical to have as many targets as I do.

Thanks.
Eugene.



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