[Pkg-iscsi-maintainers] Bug#730125: iscsitarget interop problems with IBM AIX 7.1 initiator

[Gasha]

Package: iscsitarget
Version: 1.4.20.3+svn496-1

When accessing iscsi disks from AIX 7.1 (TL1), we get lots of error 
messages, timeouts, etc.
# cfgmgr -l iscsi0 (no errors)
# dd if=/dev/hdisk5 of=/dev/null (not fast, but works)
# mkvg -y vg21 hdisk5 (I/O error)
# mkfs -V jfs2 (I/O errors, timeouts)

Tested first using Wheezy-amd64 / Package: iscsitarget (1.4.20.2-10.1)
Got kernel module crash, during first activity. Not good.

Upgraded to iscsitarget/jessie latest package 1.4.20.3+svn496-1 (kernel 
still from wheezy) to get these errors. Linux side complains in dmesg 
about packet frame sizes, etc...

And guess what? Reinstall to squeeze-amd64 solved all problems. Not a 
single warning message. So this is clearly a regression.

All configuration files are default.

I will provide all kinds of logfiles / tcpdump / etc. I want this to be 
fixed. We have here full server room with all unix flawors, so it is 
possible to test other initiators also.

Please advise what to debug. What logs to send. I can reproduce problem.

Linux box is reinstalled at this time. Some errpt -a output from AIX 
follows:
--------------------------------------------------------------------------
LABEL:          SC_DISK_ERR3
IDENTIFIER:     C62E1EB7

Date/Time:       Wed Nov 20 23:25:03 EET 2013
Sequence Number: 309
Machine Id:      00F6A8A24C00
Node Id:         rtpsdb01
Class:           H
Type:            PERM
WPAR:            Global
Resource Name:   hdisk5
Resource Class:
Resource Type:
Location:
VPD:
         Manufacturer................IET
         Machine Type and Model......VIRTUAL-DISK
         ROS Level and ID............30202020
         Serial Number...............
         Device Specific.(Z0)........000004523B000002
         Device Specific.(Z1)........

Description
DISK OPERATION ERROR

Probable Causes
DASD DEVICE
STORAGE DEVICE CABLE

Failure Causes
DISK DRIVE
DISK DRIVE ELECTRONICS
STORAGE DEVICE CABLE

         Recommended Actions
         PERFORM PROBLEM DETERMINATION PROCEDURES

Detail Data
PATH ID
            0
SENSE DATA
0A00 2A00 0000 0081 0000 FE00 0000 0000 0000 0000 0000 0000 0200 0400 
0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000 0000 0000 0000 0000 1200 0000 0000 0000 0000 0000 0000 0000 
0083 0000
0000 0034 0017
---------------------------------------------------------------------------
LABEL:          ISCSISW_ERR1
IDENTIFIER:     5EB76CCF

Date/Time:       Wed Nov 20 22:50:19 EET 2013
Sequence Number: 308
Machine Id:      00F6A8A24C00
Node Id:         rtpsdb01
Class:           H
Type:            TEMP
WPAR:            Global
Resource Name:   iscsi0
Resource Class:
Resource Type:
Location:

Description
SOFTWARE ERROR

Probable Causes
INTERNAL SOFTWARE ERROR
ADAPTER HARDWARE
DEVICE
CABLE

Failure Causes
COMMUNICATIONS PROGRAM ERROR.
ADAPTER HARDWARE
DEVICE
CABLE LOOSE OR DEFECTIVE

         Recommended Actions
         PERFORM PROBLEM DETERMINATION PROCEDURES
         CHECK PHYSICAL INSTALLATION
         REVIEW MEMORY USAGE
         RESTART COMMUNICATION PROTOCOL PROGRAM

Detail Data
SENSE DATA
0000 0000 0000 402A 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
0100 0000
0000 0000 0A39 08B1 0000 0000 0000 0000 0000 0000 0000 0000 0100 0000 
0000 0000
0000 0280 0000 0000 0000 000A 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0001 F100 0A01 9B38 D000 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
2680 0000
0000 0000 0000 0000 0000 0000 0000 000A 0000 0000 0000 000A 0BFF FE15 
0BFF FE35
0000 0000 0000 0000 0000 0000 3254 3D59 6573 0046 6972 7374 4275 7273 
744C 656E
6774 683D 3635 3533 3600 496D 6D65 6469 6174 6544 6174 613D 4E6F 004D 
6178 4275
7273 744C 656E 6774 683D 3236 3231 3434 0044 6566 6175 6C74 5469 6D65 
3257 6169
743D 3200 4465 6661 756C 7454 696D 6532 5265 7461 696E 3D30 004D 6178 
4F75 7473
7461 6E64 696E 6752 3254 3D31 0044 6174 6150 4455 496E 4F72 6465 723D 
5965 7300
4461 7461 5365 7175 656E 6365 496E 4F72 6465 723D 5965 7300 4572 726F 
7252 6563
6F76 6572 794C 6576 656C 3D30 0048 6561 6465 7244 6967 6573 743D 4E6F 
6E65 0044
6174 6144 6967 6573 743D 4E6F 6E65 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
0000 0000
0000 0000
---------------------------------------------------------------------------


Gatis