Hi, We have controller A and controller B connected to both FC swicthes. The host sees 4 paths to the LUN (2 active through active controller and 2 ghost through passive controller).
I disconnect the fibres that link FC Switch to DS4700 (to the active controller). It should send SCSI commands through passive links to ask the storage to failover the LUNs active controller. This isn't working. Any info? Thanks Nuno Fernandes On Sunday 23 September 2007 21:20:27 Jan-Frode Myklebust wrote: > On 2007-09-22, Nuno Fernandes <[EMAIL PROTECTED]> wrote: > > We've bought and IBM BladecenterH and IBM DS4700 storage. > > We are using Redhat Enterprise Linux 5 and we are trying to put multipath > > working. > > <snip> > > > When we start multipath -v2 it creates multipath devices. I can see 2 > > active paths (active controler) and 2 ghost paths (standby controler). > > When i unplug 2 active fibre that connect the fabric to DS4700, multipath > > reports I/O errors and doesn't failover the controler. > > > > Any ideas? > > Do you have DS controller A connected to only one FC switch, and > DS controller B connected to another switch? Two completely separate > fabrics ? > > i.e. your host should only see one DS4x000 controller per hba. If it see > both A and B over the same HBA, I think it might try to fail over from A > to B on the same fiber connection you just unplugged. > > > -jf > > _______________________________________________ > rhelv5-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/rhelv5-list
signature.asc
Description: This is a digitally signed message part.
_______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
