generate user-friendly names for JBOD disks
is an udev helper which parses
to map a physical path in a
storage topology to a channel name. The channel name is combined with a disk
enclosure slot number to create an alias that reflects the physical location
of the drive. This is particularly helpful when it comes to tasks like
replacing failed drives. Slot numbers may also be remapped in case the default
numbering is unsatisfactory. The drive aliases will be created as symbolic
links in /dev/disk/by-vdev
The currently supported topologies are sas_direct
. A multipath mode is supported in which
dm-mpath devices are handled by examining the first running component disk as
reported by the driver. In multipath mode the configuration file should
contain a channel definition with the same name for each path to a given
also supports creating aliases based
on existing udev links in the /dev hierarchy using the
configuration file keyword. See
- The device node to classify, like
- Specifies the path to an alternate configuration file. The default is
- Identifies a physical topology that governs how physical paths are mapped
- sas_direct and
- channels are uniquely identified by a PCI slot and HBA port
- channels are uniquely identified by a SAS switch port number
- Only handle dm-multipath devices. If specified, examine the first running
component disk of a dm-multipath device as provided by the driver to
determine the physical path.
- Specifies the number of PHY devices associated with a SAS HBA port or SAS
vdev_id internally uses
this value to determine which HBA or switch port a device is connected to.
The default is 4.
- Print a usage summary.