Hi Christophe, I've implemented yet another path checker, based on O_DIRECT. Rationale: On S/390 it's possible to activate multipath support for DASD devices (called Parallel Access Volume (PAV)). As these are no SCSI devices the readsector0 path checker wouldn't work. And as this checker is quite generic it'll work for just about anybody. Cheers, Hannes -- Dr. Hannes Reinecke hare@suse.de SuSE Linux Products GmbH S390 & zSeries Maxfeldstraße 5 +49 911 74053 688 90409 Nürnberg http://www.suse.de