GPFS: Administration and Programming Reference - IRA Home

-d ″DiskName[;DiskName...]″
The name of the disks for which you want to display current configuration and state information.
When you enter multiple values for DiskName, you must separate them with semicolons and
enclose the list in quotation marks.
Options
"gpfs3nsd;gpfs4nsd;gpfs5nsd"
-e Display all of the disks in the file system that do not have an availability of up and a status of
ready. If all disks in the file system are up and ready, the message displayed is:
6027-623 All disks up and ready
-L Displays an extended list of the disk parameters, including the disk ID field and the remarks field.
The remarks column shows the current file system descriptor quorum assignments, and displays
the excluded disks. The remarks field contains desc for all disks assigned as the file system
descriptor holders and excl for all excluded disks.
-M Displays whether I/O requests to the disk are satisfied on the local node, or using an NSD server.
If the I/O is done using an NSD server, shows the NSD server name and the underlying disk name
on that server node.
-m Displays whether I/O requests to the disk are satisfied on the local node, or using an NSD server.
This scope of this options is the node on which the mmlsdisk command is issued.
Exit status
0 Successful completion.
nonzero A failure has occurred.
Security
If you are a root user:
1. You may issue the mmlsdisk command from any node in the GPFS cluster.
2. When using the rcp and rsh commands for remote communication, a properly configured .rhosts file
must exist in the root user’s home directory on each node in the GPFS cluster. If you have designated
the use of a different remote communication program on either the mmcrcluster or the mmchcluster
command, you must ensure:
a. Proper authorization is granted to all nodes in the GPFS cluster.
b. The nodes in the GPFS cluster can communicate without the use of a password, and without any
extraneous messages.
3. As root, the command can also do an mmlsdisk on remote file systems.
If you are a non-root user, you may specify only file systems that belong to the same cluster as the node
on which the mmlsdisk command was issued.
The mmlsdisk command does not work if GPFS is down.
Examples
1. To display the current state of gpfs2nsd, issue this command:
mmlsdisk /dev/fs0 -d gpfs2nsd
The system displays information similar to:
mmlsdisk Command
Chapter 8. GPFS commands 203