Technical Knowledge Base

Data Domain file system disabled (too many relaunches)

Problem:

Data Domain File System (DDFS) filesystem has been disabled.

Possible Cause:

As a normal part of filesystem startup, the filesystem attempts to replay and sanity-check the NVRAM. In the event that DDFS crashed or was not cleanly shutdown, there could be issues with this sanity-check.

Resolution:

  1. Log into the account with sysadmin privileges
  2. Enter SE mode
priv set se
  1. The system will prompt for a password, this password is the serial number of the Data Domain
  2. Set registry to ignore NVRAM contents
reg set system.IGNORE_NVRAM = TRUE
  1. Enable the filesystem
filesys enable

NOTE: This process may take a long time for the filesystem to come back online. During this time it can appear as if the Data Domain is frozen and not proceeding. Please be patient at this part and allow the filesystem to become enabled.

  1. Once the filesystem is online, verify the IGNORE_NVRAM registry key has been automatically removed
reg show system.IGNORE_NVRAM

      1. if message "Nothing matched system.IGNORE_NVRAM" is displayed it's been successfully removed, move on to step 7.
        2. if you receive a message other than above perform the command below

reg set system.IGNORE_NVRAM = FALSE

      3. verify it is off using step 1. of this subset
7. Re-run any backups that were running when the DDFS crashed, if they can not be ran again, corresponding files from the DDR should be deleted
8. Break, recreate, and resync any directory replication contexts to ensure that files on disk on the destination are consistent.

NOTE: SE commands have been deprecated in DDOS versions 7.7.5.25, 7.10.1.15, 7.13.0.15, 6.2.1.110 and above and are accessible only by Dell employees