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MPATH(4) Device Drivers Manual MPATH(4)

mpathSCSI multipath

emc* at scsibus?
hds* at scsibus?
rdac* at scsibus?
sym* at scsibus?

mpath0 at root

mpath provides access, I/O multiplexing, and failover support to SCSI logical units that can have multiple physical connections to the system. It uses connections presented by path drivers, for example sym(4), as backends to a single device attached to its own scsibus(4).

ioctl(2), emc(4), hds(4), intro(4), rdac(4), scsi(4), sym(4)

The mpath driver first appeared in OpenBSD 4.7.

David Gwynne <>.

July 16, 2013 OpenBSD-5.9