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authorNed Bass <[email protected]>2012-11-29 11:08:37 -0800
committerBrian Behlendorf <[email protected]>2012-12-03 14:04:47 -0800
commit2957f38d78d376431ab18d2f576099d682d7a711 (patch)
treea979091181389347a50da7a51a2e0431f8286799 /lib/libzpool
parente89260a1c8851ce05ea04b23606ba438b271d890 (diff)
vdev_id support for device link aliases
Add a vdev_id feature to map device names based on already defined udev device links. To increase the odds that vdev_id will run after the rules it depends on, increase the vdev.rules rule number from 60 to 69. With this change, vdev_id now provides functionality analogous to zpool_id and zpool_layout, paving the way to retire those tools. A defined alias takes precedence over a topology-derived name, but the two naming methods can otherwise coexist. For example, one might name drives in a JBOD with the sas_direct topology while naming an internal L2ARC device with an alias. For example, the following lines in vdev_id.conf will result in the creation of links /dev/disk/by-vdev/{d1,d2}, each pointing to the same target as the device link specified in the third field. # by-vdev # name fully qualified or base name of device link alias d1 /dev/disk/by-id/wwn-0x5000c5002de3b9ca alias d2 wwn-0x5000c5002def789e Also perform some minor vdev_id cleanup, such as removal of the unused -s command line option. Signed-off-by: Brian Behlendorf <[email protected]> Closes #981
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