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Full Discussion: mkvg on iscsi disk won't work (6.1)
Operating Systems AIX mkvg on iscsi disk won't work (6.1) Post 302420571 by zaxxon on Wednesday 12th of May 2010 03:45:26 AM
Old 05-12-2010
We are not using iSCSI so I can't help that much, sorry - found those two articles on how to implement iSCSI:

SVC Information Center

This one on an example using CISCO hardware and a DS4000. As far as I could understand from other sites, the step where you have to define iSCSI targets in /etc/iscsi/targets and the chdevs etc. will be the same for other models of hardware:
Implement iSCSI on AIX

And one more:
Help -

If you get it working, leave a note here what did the trick, ty.

Not sure how good your german is - here is one more describing what to do:
Stor IT Back - herstellerunabhängige Beratung

Some translation of it:
  • Since AIX 5.2 iSCSI is implemented to the OS.
  • Need a working TCP/IP connection to the storage.
  • Is a ping to the iSCSI target successful, you can the software initiator(?) be installed.
  • With "smitty -> chgiscsisw" the iSCSI-initiator will be created.
  • Further configuration has to be done in /etc/iscsi/targets.
Here an example performance tuning for iSCSI he describes in his article:
Quote:
ifconfig en3 down
ifconfig en3 detach

chdev -a ent3 -a jumbo_frames=yes
chdev -l en3 -a tcp_recvspace=262144
chdev -l en3 -a tcp_sendspace=262144
chdev -l en3 -a rfc1323=1

ifconfig en3 up
At the end he points at Implement iSCSI on AIX too.
 

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LEARN ABOUT CENTOS

tgtd

TGTD(8) 							  [FIXME: manual]							   TGTD(8)

NAME

       tgtd - The SCSI Target Daemon

SYNOPSIS

       tgtd

       tgtd [-C --control-port <INTEGER>] [-d --debug <INTEGER>] [-f --foregound] [-h --help] [--iscsi <...>]

DESCRIPTION

       Tgtd is a SCSI Target daemon. It can be used to provide SCSI target service to a network. The most common service is iSCSI but other
       services are also supported.

DEVICE TYPES

       Tgtd provides support for both emulated and passthrough of real devices.

	       Tgtd can emulate the following types of devices:

	       disk	  : Normal disk device. Emulates a SCSI harddisk.
	       tape	  : Tape device. Emulates a SCSI tape drive.
	       cd	  : CD device. Emulates a SCSI DVD burner.
	       changer	  : Media changer. Emulate the changer device for a virtual tape library or DVD jukebox.

OPTIONS

       -d --debug <INTEGER>
	   Set to non-zero value to activate additional debugging messages to be logged.

       -f --foreground
	   Run the daemon in the foreground.

       -h --help
	   Print help text to the screen.

       -C --control-port <INTEGER>
	   This comamnd is used to specify the control port to use for this instance of tgtd. This allows to run multiple instances of TGTD on a
	   host.

	   TGTADM has a matching argument to control which instance to connect to.

       --iscsi <...>
	   ISCSI specific options. See the ISCSI section below for options specific to this frontend.

ISCSI OPTIONS

       These parameters apply only to the iSCSI frontend.

   portal=<ip-address[:port]>
       This option is used to bind tgtd to a specific ip-address/portal and/or port. By default tgtd will bind to port 3260 on the wildcard
       address. The ip-address part (before the ":") can be missing to designate the wildcard address with a none-default port.

       Example: to bind tgtd to a specific address and port

		tgtd --iscsi portal=192.0.2.1:3260

       Example: to bind tgtd to any address but a none-default port

		tgtd --iscsi portal=:3251

SEE ALSO

       tgtadm(8), tgt-admin(8), tgtimg(8), tgt-setup-lun(8).  http://stgt.sourceforge.net/

COPYRIGHT
/LICENSE
	   This program is free software; you can redistribute it and/or modify
	   it under the terms of the GNU General Public License as published by
	   the Free Software Foundation; either version 2 of the License, or (at
	   your option) any later version.

	   This program is distributed in the hope that it will be useful, but
	   WITHOUT ANY WARRANTY; without even the implied warranty of
	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	   General Public License for more details.

	   You should have received a copy of the GNU General Public License
	   along with this program; if not, see http://www.gnu.org/licenses/.

[FIXME: source] 						    10/02/2010								   TGTD(8)
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