Hello,
I have not got any experience with DS4800, but DS8300 works well
with native RHEL drivers and device-mapper-multipath. We are not using
pure failover but load balancing. Try it, maybe it would solve your
problem with the preferred path.
If you want failover capability, probably the tried and best
solution would be to install original drivers from Qlogic - it works as
expected (on RHEL4 though, have not tried RHEL5 with this setup)
Regards,
Daniel
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Troels Arvin
Sent: Saturday, May 24, 2008 11:08 PM
To: [email protected]
Subject: [rhelv5-list] Interoperating with DS4800
Hello,
I've got a Dell server which has part of its storage served via fibre
channel from an IBM DS4800 storage unit (which has two controllers). The
Dell server has a QLogic dual channel HBA.
I've got basic multipathing set up, i.e. pairs of SCSI devices are
coalesced into single devices in /dev/mpath.
However, when I use DS4800's management software to specify a new
preferred path, the server doesn't seem to respect it. Shortly after
such a configuration change, a SAN alarm is thrown: "Logical Drive Not
On Preferred Path".
Googling results in many different, somewhat conflicting advice on how
to interact with a DS4800 system.
http://www.ibm.com/developerworks/linux/library/l-multipath-xen/
mentions special add-on kernel driver software; I would very much like
to stay clear of such 3rd party kernel stuff.
Does anyone have experiences with DS4800 SAN equipment in relationship
with RHEL 5 which they would like to share?
--
Regards,
Troels Arvin <[EMAIL PROTECTED]>
http://troels.arvin.dk/
_______________________________________________
rhelv5-list mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/rhelv5-list
_______________________________________________
rhelv5-list mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/rhelv5-list
