mmsdrbackup user exit
Performs a backup of the GPFS™ configuration data.
Description
The /var/mmfs/etc/mmsdrbackup user exit, when properly installed on the primary GPFS configuration server, is called asynchronously every time there is a change to the GPFS master configuration file. You can use this user exit to create a backup of the GPFS configuration data.
Read the sample file /usr/lpp/mmfs/samples/mmsdrbackup.sample for a detailed description on how to code and install this user exit.
The
type of backup that is created depends on the configuration of the
cluster:
- If the Cluster Configuration Repository (CCR) is enabled, then a CCR backup is created. This type of backup applies to IBM Spectrum Scale™ V4.2.0 or later.
- Otherwise, a mmsdrfs backup is created.
Note: The mmsdrbackup user
exit is supported from IBM Spectrum
Scale 4.2.0
or later. It must not be used on clusters which have nodes running
earlier versions of IBM Spectrum
Scale.
Parameters
The generation number of the most recent version of the GPFS configuration data.
Exit status
The mmsdrbackup user exit returns a value of zero.