Red Hat GLOBAL FILE SYSTEM 4.7 Manual page 37

a slowdown in performance.
As a user or group approaches their quota limit, GFS dynamically reduces the time between its
quota-file updates to prevent the limit from being exceeded. The normal time period between
quota synchronizations is a tunable parameter,
command. By default, the time period is 60 seconds. Also, the
gfs_tool
parameter must be set on each node and each time the file system is mounted. (Changes to the
parameter are not persistent across unmounts.)
quota_quantum
You can use the
gfs_quota sync
to the on-disk quota file between the automatic updates performed by GFS.
Usage
Synchronizing Quota Information
gfs_quota sync -f MountPoint
MountPoint
Specifies the GFS file system to which the actions apply.
Tuning the Time Between Synchronizations
gfs_tool settune MountPoint quota_quantum Seconds
MountPoint
Specifies the GFS file system to which the actions apply.
Seconds
Specifies the new time period between regular quota-file synchronizations by GFS. Smaller
values may increase contention and slow down performance.
Examples
This example synchronizes the quota information from the node it is run on to file system
gfs_quota sync -f /gfs
This example changes the default time period between regular quota-file updates to one hour
(3600 seconds) for file system
quota_quantum
command to synchronize the quota information from a node
on a single node.
/gfs
Synchronizing Quotas
, and can be changed using the
quota_quantum
.
/gfs
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