* Multipath with 2 NICs?
@ 2007-10-25 14:34 Scott Moseman
2007-10-25 18:06 ` Mike Christie
0 siblings, 1 reply; 3+ messages in thread
From: Scott Moseman @ 2007-10-25 14:34 UTC (permalink / raw)
To: dm-devel
We're interesting in using multipath I/O from our Red Hat servers with
our iSCSI SAN in order to have failover in the event of a switch
failure. Our vendor gave me a product matrix and it says we cannot
use 2 NICs under Red Hat, we must use 1 NIC and 1 HBA. I'm not
finding any clear cut explanation of this in the device-mapper
documentation, unless I'm missing something. Are we really required
to use an HBA instead of just 1 NICs with DM?
Thanks,
Scott
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Multipath with 2 NICs?
2007-10-25 14:34 Multipath with 2 NICs? Scott Moseman
@ 2007-10-25 18:06 ` Mike Christie
2007-11-29 14:46 ` Scott Moseman
0 siblings, 1 reply; 3+ messages in thread
From: Mike Christie @ 2007-10-25 18:06 UTC (permalink / raw)
To: device-mapper development
Scott Moseman wrote:
> We're interesting in using multipath I/O from our Red Hat servers with
> our iSCSI SAN in order to have failover in the event of a switch
> failure. Our vendor gave me a product matrix and it says we cannot
> use 2 NICs under Red Hat, we must use 1 NIC and 1 HBA. I'm not
> finding any clear cut explanation of this in the device-mapper
> documentation, unless I'm missing something. Are we really required
> to use an HBA instead of just 1 NICs with DM?
>
In RHEL 5.0, that is true.
In RHEL 5.1 you can now bind a session to a specific nic and multipath
over the two sessions. See sectrion 5.1 in
/usr/share/doc/iscsi-initiator-utils-*/README for info on how to do this.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Multipath with 2 NICs?
2007-10-25 18:06 ` Mike Christie
@ 2007-11-29 14:46 ` Scott Moseman
0 siblings, 0 replies; 3+ messages in thread
From: Scott Moseman @ 2007-11-29 14:46 UTC (permalink / raw)
To: device-mapper development
To confirm, 5.1 will allow MPIO over 2 NICs w/o requiring an HBA?
Thanks,
Scott
On Oct 25, 2007 12:06 PM, Mike Christie <michaelc@cs.wisc.edu> wrote:
>
> > We're interesting in using multipath I/O from our Red Hat servers
> > with our iSCSI SAN in order to have failover in the event of a switch
> > failure. Our vendor gave me a product matrix and it says we cannot
> > use 2 NICs under Red Hat, we must use 1 NIC and 1 HBA. I'm not
> > finding any clear cut explanation of this in the device-mapper
> > documentation, unless I'm missing something. Are we really required
> > to use an HBA instead of just 1 NICs with DM?
>
> In RHEL 5.0, that is true.
>
> In RHEL 5.1 you can now bind a session to a specific nic and multipath
> over the two sessions. See sectrion 5.1 in
> /usr/share/doc/iscsi-initiator-utils-*/README for info on how to do this.
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2007-11-29 14:46 UTC | newest]
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2007-10-25 14:34 Multipath with 2 NICs? Scott Moseman
2007-10-25 18:06 ` Mike Christie
2007-11-29 14:46 ` Scott Moseman
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