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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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ISCSID(8)						   Linux Administrator's Manual 						 ISCSID(8)

NAME
iscsid - Open-iSCSI daemon SYNOPSIS
iscsid [OPTION] DESCRIPTION
The iscsid implements the control path of iSCSI protocol, plus some management facilities. For example, the daemon could be configured to automatically re-start discovery at startup, based on the contents of persistent iSCSI database. OPTIONS
[-c|--config=]config-file Read configuration from config-file rather than the default /etc/iscsi/iscsid.conf file. [-i|--initiatorname=]iname-file Read initiator name from iname-file rather than the default /etc/iscsi/initiatorname.iscsi file. [-f|--foreground] run iscsid in the foreground. [-d|--debug=]debug_level print debugging information. Valid values for debug_level are 0 to 8. [-u|--uid=]uid run under user ID uid (default is the current user ID) [-g|--gid=]gid run under user group ID gid (default is the current user group ID). [-n|--no-pid-file] do not write a process ID file. [-p|--pid=]pid-file write process ID to pid-file rather than the default /var/run/iscsid.pid [-h|--help] display this help and exit [-v|--version] display version and exit. FILES
/etc/iscsi/iscsid.conf The configuration file read by iscsid and iscsiadm on startup. /etc/iscsi/initiatorname.iscsi The file containing the iSCSI initiatorname and initiatoralias read by iscsid and iscsiadm on startup. /etc/iscsi/nodes Open-iSCSI persistent configuration database SEE ALSO
iscsiadm(8) AUTHORS
Open-iSCSI project <http://www.open-iscsi.org/> Alex Aizman <itn780@yahoo.com> Dmitry Yusupov <dmitry_yus@yahoo.com> July 2005 ISCSID(8)
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