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Re: kern/157770: [iscsi] [panic] iscsi_initiator panic

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Erwan Martin

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Jun 21, 2011, 8:10:13 AM6/21/11
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The following reply was made to PR kern/157770; it has been noted by GNATS.

From: Erwan Martin <ema...@lanestel.fr>
To: bug-fo...@FreeBSD.org, martin.b...@aon.at
Cc:
Subject: Re: kern/157770: [iscsi] [panic] iscsi_initiator panic
Date: Tue, 21 Jun 2011 13:42:18 +0200

I'm having the same problem.
The windows XP initiator works perfectly but iscsi_initiator does not.

The initiator system is:
FreeBSD fbsd.localdomain 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Fri Jun 10
10:17:58 CEST 2011
ro...@fbsd.localdomain:/usr/obj/usr/src/sys/ISCSIKERNEL i386

On the target:
Jun 21 11:06:49 hostname istgt[11438]: Login(discovery) from
iqn.2011-06.net.example.tests:whatever (192.168.3.205) on449423030,
TSIH=4, CID=1, HeaderDigest=off, DataDigest=off
Jun 21 11:06:49 hostname istgt[11438]:
istgt_iscsi.c:1848:istgt_iscsi_check_values: ***ERROR***
FirstBurstLength(262144) > MaxBurstLength(131072)
Jun 21 11:06:49 hostname istgt[11438]:
istgt_iscsi.c:2559:istgt_iscsi_op_login: ***ERROR***
iscsi_check_values() failed
Jun 21 11:06:49 hostname istgt[11438]:
istgt_iscsi.c:4545:istgt_iscsi_execute: ***ERROR*** iscsi_op_login() failed
Jun 21 11:06:49 hostname istgt[11438]: istgt_iscsi.c:5156:worker:
***ERROR*** iscsi_execute() failed on
dummy,t,0x0001(iqual175,i,0x804449423030)

I do not experience any system crash however.

This bug can be repeated on my system.
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Daniel Braniss

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Jun 22, 2011, 2:21:38 AM6/22/11
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either add
maxBurstLength = 262144
to the iscsi.conf, or
iscontrol ... maxBurstLength=262144

danny

Daniel Braniss

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Jun 22, 2011, 3:40:21 AM6/22/11
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The following reply was made to PR kern/157770; it has been noted by GNATS.

From: Daniel Braniss <da...@cs.huji.ac.il>
To: bug-fo...@FreeBSD.org,
martin.b...@aon.at
Cc:
Subject: Re: kern/157770: [iscsi] [panic] iscsi_initiator panic

Date: Wed, 22 Jun 2011 10:12:12 +0300

There are 2 issues here, and only one causes the panic.
issue 1: mismatch of negotiated values might cause hangs/panics when =
trying to kill iscontrol
this is in my todo list.
issue 2: somehow -to be investigated- iscontrol and istgt don't =
negotiate FirstBurstLength and
MaxBurtsLength correctly. The workaround is either to reduce =
MaxBurstLength in istgt conf, or
increase it in iscsi,conf

Daisuke Aoyama

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Jul 17, 2011, 10:58:19 AM7/17/11
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Hello,

> issue 2: somehow -to be investigated- iscontrol and istgt don't =
> negotiate FirstBurstLength and
> MaxBurtsLength correctly. The workaround is either to reduce =
> MaxBurstLength in istgt conf, or
> increase it in iscsi,conf

This issue was fixed by 20110717. You can use it with the default value of
the initiator.
I will update the ports after some test.

If you want to use it before updating, please download it from:
http://shell.peach.ne.jp/aoyama/archives/1542

Thank you.
--
Daisuke Aoyama

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