This article describes significance of the values held in the ​ hw.re.reboot_on_disk_failure variable.

The ' hw.re.reboot_on_disk_failure' sysctl variable holds the information from the configuration under the following context:

• The 'disk-failure-action' statement instructs the router to halt or reboot if hard disk errors are detected on the routing engine.

• ​Based on the configuration of the disk-failure-action on the Juniper dual-RE device, the 'sysctl' value will change.

Configuration Hierarchy

set chassis routing-engine on-disk-failure disk-failure-action

• halt - Halt on disk failure

• reboot - Reboot on disk failure

Value of the sysctl variable ' hw.re.reboot_on_disk_failure' :

1. When there is no configuration in this hierarchy:
   hw.re.reboot_on_disk_failure = 0.

2. When "set chassis routing-engine on-disk-failure disk-failure-action reboot" is configured:
   hw.re.reboot_on_disk_failure = 1.

3. When "set chassis routing-engine on-disk-failure disk-failure-action halt" is configured
   hw.re.reboot_on_disk_failure = 2.

To view current value of 'hw.re.reboot_on_diskfail'

1. login to the RE linux shell and execute the following command
   re0> start shell

2. shell% sysctl hw.re.reboot_on_diskfail
   hw.re.reboot_on_diskfail: 2​

• Tech Library - on-disk-failure