Apple Mac OS X Server manual Erasing, Modifying, Verifying, and Repairing Disks

The scripts use values in the following configuration files to determine whether and how to reclaim space:

ÂThe script /etc/periodic/daily/600.daily.server runs daily. Its configuration file is /etc/diskspacemonitor/daily.server.conf.

ÂThe script /etc/periodic/weekly/600.weekly.server is intended to run weekly, but is currently empty. Its configuration file is /etc/diskspacemonitor/weekly.server.conf.

ÂThe script /etc/periodic/monthly/600.monthly.server is intended to run monthly, but is currently empty. Its configuration file is /etc/diskspacemonitor/monthly.server.conf.

As configured, the scripts specify actions that complement the log file management performed by the services listed above, so don’t modify them. All you need to do is log in as an administrator and use a text editor to define thresholds in the configuration files that determine when the actions are taken. For example:

ÂThe number of megabytes a log file must contain before its space is reclaimed.

ÂThe number of days since a log file’s last modification that need to pass before its space is reclaimed.

Specify one or both thresholds. The actions are taken when either threshold is exceeded.

There are several additional parameters you can specify. See comments in the configuration files for information about all the parameters and how to set them. The scripts ignore all log files except those for which at least one threshold is present in the configuration file.

To configure the scripts on a server from a remote Mac OS X computer, open a Terminal window and log in to the remote server using SSH. Then, open a text editor and edit the scripts.

You can also use the diskspacemonitor tool to reclaim disk space.

Erasing, Modifying, Verifying, and Repairing Disks

You can use diskutil to erase, modify, verify, and repair disks. This command provides functionality that overlaps with the functionality of pdisk, newfs_hfs, and disktool. For example, you can use both diskutil and pdisk to partition a disk. However, unlike pdisk, which lets you partition tables at their most basic level by setting the exact base address and partition length in blocks, diskutil lets you partition a disk automatically by calculating the base address and the partition length in blocks based on the partition size you specify.

The diskutil tool allows you to perform the following actions on a disk:

Chapter 7 Working with Disks and Volumes

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