Isilon: OneFS-sysctl.efs.lbm.drive_space

How to use sysctl efs.lbm.drive_space to view the usage statistics for drives in a node, including blkfree and usedino statistics. This information is useful to determine if data is being written to a drive.

Using this sysctl

To view the usage statistics for drives in a node:

1. Open an SSH connection on any node in the cluster and log in using the "root" account.
2. Run the following command, where <node number> is the number of the node that includes the drive to monitor: 

   isi_for_array -n <node number> sysctl efs.lbm.drive_space

    For example: 

   isi_for_array -n 2 sysctl efs.lbm.drive_space

    Output similar to the following displays:

   node-2: efs.lbm.drive_space: {
   node-2: (ldnum=0, blkfree=327890, totalblk=437696, usedino=6285, inofree=4031059, totalino=5136000),
   node-2: (ldnum=1, blkfree=188561, totalblk=437696, usedino=5313, inofree=2448207, totalino=5136000),
   node-2: (ldnum=2, blkfree=196122, totalblk=437696, usedino=4903, inofree=2508505, totalino=5136000),
   node-2: (ldnum=3, blkfree=322342, totalblk=437696, usedino=6148, inofree=3925228, totalino=5136000)
   node-2: }

    

For an index of documented sysctl commands and procedures for configuring sysctls, see the following article:  PowerScale: OneFS Configuring sysctl changes to persist through node and cluster reboots and upgrades