I'm working on getting my test backup server (running AIX 5.2) talking
to our newly installed Cybernetics V-Lib (really an HSTC, two
instaRAIDs and an LTO-2 library) via iSCSI, but am having problems.

The biggest issue right now seems to be that AIX wants to leave all of
the (virtual) tape devices in a Defined state, after running `cfgmgr -l
iscsi0`. It returns:

Method error (/etc/methods/cfgscsitape -l rmt4 ):
0514-051 Device to be configured does not match the physical
device at the specified connection location.

At least it's seeing the iSCSI device and recognizing it as a tape and
not a drive. But, the really kicker is this error:

cfgmgr: 0514-621 WARNING: The following device packages are required
for
device support but are not currently installed.
devices.iscsi.changer

I can't find devices.iscsi.changer anywhere on the 5.2 install CDs, and
I did a serch via the APAR/fixes at IBM's site and nothing comes up.
Even google is drawing a blank. Does anyone know where that package
can be found? Barring that, anyone have an easy solution for the
0514-051 error?

TIA.

J

Resolved Caveats

·CSCef70709

There is a compatibility issue with the IBM AIX iSCSI driver and a 3592
tape device. An iscsi-ls shows the tape drive, and the syslog message
says that the iSCSI initiator finds the tape drive to be a 3592.
However, lsdev says that the tape drive is defined but not in an
available state. A "mkdev" fails with an error in
/etc/methods/cfgscsitape. The error is 0514-051 (device to be
configured does not match physical device at specified connection
location.

Workaround: This compatibility issue has been resolved in the iSCSI
driver version 3.4.5 for IBM AIX. The AIX 3592 tape driver, however,
has an issue in defining tapes with the iSCSI driver.

Thanks, Vlad. I did see that (IIRC, it was the only google return),
but I'm not using the Cisco initiator, just the one that comes wtih
AIX. I thought it interesting that they have the same error
code/format, but put it down to common parent source.

I talked at length with a gentleman from IBMs tape group yesterday
afternoon. The devices.iscsi.changer is a bogus lead, there is no
package named that. Apparently cfgmgr just takes a wild guess as to
what the right package might be. Then again, the same guy told me that
he wasn't aware of any support in AIX for iSCSI. I sent him links to
the IBM documentation, and he forwarded the ticket to the iSCSI group.

Maybe I'll just take the IBM drivers out and try the Cisco ones.