Tore Anderson wrote: > * Gerald Nowitzky > >> What I'd like to have is multibus via HBA-A -> SW-A -> SP-A and >> HBA-B -> SW-B -> SP-A to the active SP and, in case both paths to the >> active SP fail, a trespas of my LUN to SP-B, multibus to the other >> SP-B and vice versa. > > Try the following: > > prio_callout "/sbin/mpath_prio_emc /dev/%n" > path_grouping_policy group_by_prio > > The -EEXIST message is a kernel bug, see the thread starting at > <http://lkml.org/lkml/2007/8/14/106> for more information. It might be > possible to work around it by disabling async SCSI scanning, if not > there's a patch from Matthew Wilcox that removed most of those -EEXIST > errors (but not all the corner cases). > > It kinda sucks that the kernel removes the SCSI devices pointing to > blocked rports. Wonder if it's possible to disable that somehow... > That's the dev_loss_tmo setting. Just increase it to something to your liking. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Markus Rex, HRB 16746 (AG Nürnberg) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
