Date: Fri, 22 Sep 2017 15:49:41 +0500 From: "Eugene M. Zheganin" <emz@norma.perm.ru> To: "Eugene M. Zheganin" <emz@norma.perm.ru>, freebsd-stable@freebsd.org Cc: =?UTF-8?Q?Edward_Tomasz_Napiera=C5=82a?= <etnapierala@gmail.com> Subject: Re: ctld: only 579 iSCSI targets can be created Message-ID: <739fe048ccbe15c096ec79fc320eee56@norman-vivat.ru> In-Reply-To: <20170922071554.GA3846@brick> References: <04e8820c2c6cc7a95d6ffdf257f00f7d@norman-vivat.ru> <20170922071554.GA3846@brick>
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Hi, Edward Tomasz Napierała wrote 2017-09-22 12:15: > > There are two weird things here. First is that the error is coming > from > ctld(8) - the userspace daemon, not the kernel. The second is that > those > invalid opcodes are actually both valid - they are the Text Request, > and the Logout Request with Immediate flag set, exectly what you'd > expect > for a discovery session. > > Do you have a way to do a packet dump? Sure. Here it is: http://enaza.ru/stub-data/iscsi-protocol-error.pcap Target IP is 10.0.2.4, initiator IP is 10.0.3.127. During the session captured in this file I got in messages: Sep 22 15:38:11 san1 ctld[61373]: 10.0.3.127 (iqn.1991-05.com.microsoft:worker296): protocol error: received invalid opcode 0x4 Sep 22 15:38:11 san1 ctld[61374]: 10.0.3.127 (iqn.1991-05.com.microsoft:worker296): protocol error: received invalid opcode 0x46 This error happens when the initiator is trying to connect the disk from a target discovered. Target is running FreeBSD 11.0-STABLE #1 r310734M where M is for CTL_MAX_PORTS 1024 (old verion, yup, but I have a suspicion that I still failed to prove that more recent version have some iSCSI vs ZFS conflict, but that's another story). Initiator is running Windows 7 Professional x64, inside a ESX virtual machine. This happens only when some unclear threshold is crossed, previous ~2 hundreds of initiators run Windows 7 Professional too. If you need any additional data/diagnostics please let me know. Eugene.
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