Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - SYSTEM BASICS CONFIGURATION GUIDE 2010-10-04 Configuration Manual page 401

flash-disk compare
Copyright © 2010, Juniper Networks, Inc.
Ensure that the file systems on the primary flash card and the redundant flash card
1.
are synchronized. (See "Synchronizing Flash Cards" on page 368 for details.)
Issue the flash-disk compare command, specifying whether to perform the checksum
2.
validation for all files in NVS or only for configuration files.
host1#flash-disk compare all
host1#flash-disk compare configuration
The flash-disk compare configuration command, which validates only configuration
files, excludes larger files such as software releases and scripts from the validation
process. As a result, this command takes less time to complete than the flash-disk
compare all command, which validates all NVS files.
Review the flash-disk compare output to determine whether any files failed the
3.
checksum validation.
If the flash-disk compare command detects differences in the content of one or more
files, the router reports a checksum test failure.
If one or more files failed the checksum validation, determine whether the corrupted
4.
files reside on the primary SRP module or on the redundant SRP module.
If the corrupted file resides on the primary SRP module, issue the srp switch command
5.
to force a switch from the primary SRP module to the redundant SRP module.
This action ensures that the error-free version of the file will be on the SRP module
that takes control after the switch.
Issue the synchronize command with the low-level-check keyword to force the router
6.
to:
Validate all files in NVS (when you use the all keyword) or only configuration files
in NVS (when you use the configuration keyword).
Synchronize all files that failed the checksum test during the flash-disk compare
command, as well as any other unsynchronized files.
host1#synchronize low-level-check all
host1#synchronize low-level-check configuration
This action resolves any file discrepancies between the primary and redundant SRP
modules and restore SRP file integrity.
NOTE: Both the flash-disk compare and synchronize low-level-check
commands perform CPU-intensive processing that can take several
minutes to complete. For best results, do not run these commands
simultaneously on the same router. In addition, do not run multiple
instances of the flash-disk-compare command simultaneously on the
same router.
Chapter 6: Managing Modules
371