freebsd-nq/cmd/vdev_id
Ned Bass 09d0b30fd1 vdev_id: support per-channel slot mappings
The vdev_id udev helper currently applies slot renumbering rules to
every channel (JBOD) in the system.  This is too inflexible for systems
with non-homogeneous storage topologies.  The "slot" keyword now takes
an optional third parameter which names a channel to which the mapping
will apply.  If the third parameter is omitted then the rule applies to
all channels.  The first-specified rule that can match a slot takes
precedence.  Therefore a channel-specific rule for a given slot should
generally appear before a generic rule for the same slot number.  In
this way a custom slot mapping can be applied to a particular channel
and a default mapping applied to the rest.

Signed-off-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2056
2014-01-17 11:17:54 -08:00
..
Makefile.am Add vdev_id for JBOD-friendly udev aliases 2012-06-01 08:55:14 -07:00
vdev_id vdev_id: support per-channel slot mappings 2014-01-17 11:17:54 -08:00