Chapter 10. Administering Client Machines and the Cache Manager
| Part III. Managing Client Machines |

## Chapter 10. Administering Client Machines and the Cache Manager

This chapter describes how to administer an AFS client machine, which is any machine from which users can access the AFS filespace and communicate with AFS server processes. (A client machine can simultaneously function as an AFS server machine if appropriately configured.) An AFS client machine has the following characteristics:

- The kernel includes the set of modifications, commonly referred to as the Cache Manager, that enable access to AFS files and directories. You can configure many of the Cache Manager's features to suit your users' needs. See Overview of Cache Manager Customization.

- The /usr/vice/etc directory on the local disk stores several configuration files. See Configuration Files in the /usr/vice/etc Directory.

- A cache stores temporary copies of data fetched from AFS file server machines, either in machine memory or on a devoted local disk partition. See Determining the Cache Type, Size, and Location and Setting Other Cache Parameters with the afsd program.

To learn how to install the client functionality on a machine, see the OpenAFS Quick Beginnings.

## Summary of Instructions

This chapter explains how to perform the following tasks by using the indicated commands:

Display cache size set at reboot | cat /usr/vice/etc/cacheinfo
Display current cache size and usage | fs getcacheparms
Change disk cache size without rebooting | fs setcachesize
Initialize Cache Manager | afsd
Display contents of CellServDB file | cat /usr/vice/etc/CellServDB
Display list of database server machines from kernel memory | fs listcells
Change list of database server machines in kernel memory | fs newcell
Check cell's status regarding setuid | fs getcellstatus
Set cell's status regarding setuid | fs setcell
Set server probe interval | fs checkservers -interval
Display machine's cell membership | cat /usr/vice/etc/ThisCell
Change machine's cell membership | Edit /usr/vice/etc/ThisCell
Flush cached file/directory | fs flush
Flush everything cached from a volume | fs flushvolume
Update volume-to-mount-point mappings | fs checkvolumes
Display Cache Manager's server preference ranks | fs getserverprefs
Set Cache Manager's server preference ranks | fs setserverprefs
Display client machine addresses to register | fs getclientaddrs
Set client machine addresses to register | fs setclientaddrs
Control the display of warning and status messages | fs messages
Display and change machine's system type | fs sysname
Enable asynchronous writes | fs storebehind

Part III. Managing Client Machines |  | Overview of Cache Manager Customization