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| -rw-r--r-- | extras/chassis_id/README | 28 |
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diff --git a/extras/chassis_id/README b/extras/chassis_id/README new file mode 100644 index 0000000000..51add4945e --- /dev/null +++ b/extras/chassis_id/README @@ -0,0 +1,28 @@ + README.txt + ~~~~~~~~~~ +Chassis_id is a callout program which is used to give geographic names to devices. It uses +another callout program scsi_id to determine the serial number of a device and then looks up +the provisioning table based on this key. It retrieves geographic information +( chassis#, slot# and host# ) about the device and prints it to stdout. These fields are +used by udev to create the device entry. + +Using Udev: +~~~~~~~~~~ +Chassis_id gets invoked by udev using the udev as below: + +BUS="scsi", PROGRAM="/usr/local/bin/chassis_id", NAME="/chassis%c{1}/slot%c{2}/host%c{3}/disk-%c{4} + +The provisioning table ( file provision.tbl ) has to be put in /usr/local/bin and as of now has +to be populated manually. This is the only place where the geographic map of devices is kept +in the system. + + +Usage Model: +~~~~~~~~~~~~ +On ATCA based blade architecture systems, blade insertion/removal is common. We create names +in a 3 level deep tree which represent the geographic map of the devices. + + +CONTACT: +~~~~~~~~ +Please feel free to contact atul.sabharwal@intel.com with questions, comments, suggestions. |