Remove and Replace Disks using the MapR Control System

  1. Identify the failed disk or disks:
    • In the Navigation pane, expand the Cluster group and click the Nodes view.
    • Click the name of the node on which you want to replace disks, and look in the MapR-FS and Available Disks pane.

  2. Remove the failed disk or disks from MapR-FS:
    Warning: Removing a disk in the storage pool that contains Container ID 1 will stop your cluster. Container ID 1 contains CLDB data for the master CLDB. From the command-line, run the maprcli disk remove command without the -force 1 option first and examine the warning messages to make sure you aren't removing the disk with Container ID 1. To safely remove such a disk, perform a CLDB Failover to make one of the other CLDB nodes the primary CLDB, then remove the disk as normal.
    • In the MapR-FS and Available Disks pane, click the checkbox that corresponds to each failed disk.

    • Click the Remove Disk(s) to MapR-FS button.
    • In the dialog box that opens, click OK.

    • Wait several minutes while the removal process completes. After you remove the disks, the offline disks from the same storage pools are marked as available (not in use by MapR).
    • From a command line terminal, remove the failed disk log file from the /opt/mapr/logs directory. These log files are typically named like this:
      diskname.failed.info
  3. Replace the failed disks on the node or nodes according to the correct hardware procedure.
  4. Add the replacement and available disks to MapR-FS:
    • In the Navigation pane, expand the Cluster group and click the Nodes view.
    • Click the name of the node on which you replaced the disks.
    • In the MapR-FS and Available Disks pane, click the checkboxes beside the disks you want to add to the storage pool.

    • Click the Add Disk(s) to MapR-FS button.
    • When the confirmation dialog box appears, click OK.

  5. Note that the display shows MapR-FS under the File System column, which indicates that the disks were successfully added.