GPFS: Administration and Programming Reference - IRA Home

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mmrpldisk: Propagating the cluster configuration data to all
affected nodes. This is an asynchronous process.
Displaying GPFS disk states
You can display the current state of one or more disks in your file system by issuing the mmlsdisk
command. The information includes parameters that were specified on the mmcrfs command, and the
current availability and status of the disks. For example, to display the current status of the disk
hd8vsdn100 in the file system fs1, enter:
mmlsdisk fs1 -d hd8vsdn100
Status is displayed in a format similar to:
disk driver sector failure holds holds storage
name type size group metadata data status availability pool
------------ -------- ------ ------- -------- ----- ------------- ------------ ------------
hd8vsdn100 nsd 512 1 no yes ready up sp1
Refer to “mmlsdisk Command” on page 202 for syntax and usage information.
Availability
A disk’s availability determines whether GPFS is able to read and write to the disk. There are four possible
values for availability:
up The disk is available to GPFS for normal read and write operations.
down No read and write operations can be performed on the disk.
recovering
An intermediate state for disks coming up, during which GPFS verifies and corrects data. read
operations can be performed while a disk is in this state but write operations cannot.
unrecovered
Not all disks were successfully brought up.
Disk availability is automatically changed from up to down when GPFS detects repeated I/O errors. You
can also change the availability of a disk by issuing the mmchdisk command.
Status
Disk status controls data placement and migration. Status changes as a result of a pending delete
operation, or when the mmchdisk command is issued to allow file rebalancing or re-replicating prior to
disk replacement or deletion.
Disk status has five possible values, but three are transitional:
ready Normal status.
Chapter 4. Managing disks 31