Hi Jay,

 Thanks a lot for your  response.
 ib-bonding does have  fail_over_mac functionality and works on both 
RHEL5 and SLES10.

Thanks,
Poornima

Jay Vosburgh wrote:

Poornima Kamath [off-list ref] wrote:

  

quoted

The driver creates virtual interfaces that talk to ethernet interfaces over
infiniband,  using an infiniband to ethernet gateway device.
The gateway device sends data to all interfaces having same mac address.  For
this the driver needs to explicitly tell the gateway device not to send data to
the backup slaves.
Therefore the driver needs to  know which slaves are backup slaves.
The failover mac option  works well,  but it is present for kernels greater
than 2.6.24.  So this option is not available for distros like RHEL5, SLES10
etc
    

	I believe that RHEL5 and SLES10 contain an "ib-bonding" package
which includes a backport of the current (or at least a more current)
bonding driver specifically for use over Infiniband.  I think it's also
got a couple of other patches to bonding that aren't in the mainline.
In any event, it has the fail_over_mac functionality.

	Have you looked at ib-bonding?

  

quoted

So in order to support these distros I need some way of identifying the backup
slaves.
Is it ok to check the IFF_SLAVE_INACTIVE flags for these distros?
    

	It will do what you want (identify backup slaves), and is not
guaranteed to be available in the future.  I doubt that the flag would
ever go away on RHEL5 or SLES10, but, again, no guarantee.

	-J

---
	-Jay Vosburgh, IBM Linux Technology Center, fubar@us.ibm.com
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