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 NETBSD
libiscsi
LIBISCSI(3) BSD Library Functions Manual LIBISCSI(3)
NAME
libiscsi -- iSCSI network storage protocol implementation
LIBRARY
iSCSI protocol library (libiscsi, -liscsi)
SYNOPSIS
#include <iscsi.h>
int
iscsi_target_set_defaults(iscsi_target_t *target);
int
iscsi_target_start(iscsi_target_t *target);
int
iscsi_target_listen(iscsi_target_t *target);
int
iscsi_target_shutdown(iscsi_target_t *target);
void
iscsi_target_write_pidfile(const char *filename);
int
iscsi_target_setvar(iscsi_target_t *target, const char *name, const char *value);
char *
iscsi_target_getvar(iscsi_target_t *target, const char *name);
int
iscsi_initiator_set_defaults(iscsi_initiator_t *initiator);
int
iscsi_initiator_start(iscsi_initiator_t *initiator);
int
iscsi_initiator_discover(iscsi_initiator_t *initiator, char *x, uint64_t a, int b);
int
iscsi_initiator_shutdown(iscsi_initiator_t *initiator);
int
iscsi_initiator_setvar(iscsi_initiator_t *initiator, const char *name, const char *value);
char *
iscsi_initiator_getvar(iscsi_initiator_t *initiator, const char *name);
DESCRIPTION
libiscsi is a library interface to the iSCSI target and initiator. This conforms to IETF RFC 3720. The corresponding command line utilities
for libiscsi are iscsi-initiator(8) and iscsi-target(8).
In normal operation, a process acting as a target (i.e. presenting storage to the network) will call iscsi_target_set_defaults() and will
then set various values using the iscsi_target_setvar() function. The value of a variable can be retrieved at any time using the
iscsi_target_getvar() function. When all of the variables have been set, the iscsi_target_start() function is called, and the block storage
will be served up by the process.
A useful illustration of the use of these functions can be found in the source code to the iscsi-target(8) utility.
The libiscsi library also provides an implementation of the client end of the iSCSI subsystem, which is known as the initiator. The process
acting as an initiator will first call the iscsi_initiator_set_defaults() function, to set default values for the initiator variables. Once
all the values have been set to the user preferences using the iscsi_initiator_setvar() function, then the iscsi_initiator_start() function
is called.
The libiscsi library can be used to perform iSCSI device discovery by calling the iscsi_initiator_discovery() function. This will return a
list of all the iSCSI targets which are serving up block storage according to the variables which have already been set.
SEE ALSO
iscsi-initiator(8), iscsi-target(8)
HISTORY
The libiscsi library first appeared in NetBSD 4.0. This programmatic interface to the iSCSI subsystem first appeared in NetBSD 6.0.
AUTHORS
Alistair Crooks <agc@NetBSD.org>.
BSD
February 19, 2011 BSD