Red Hat GLOBAL FILE SYSTEM 4.7 Guia do Utilizador descarregar pdf (Página 71)

Using the SFS service 4–13

4.7.6 The service sfs status command

The service sfs status command shows information on the status (mounted or unmounted) of Lustre

file systems on the client node.

4.7.7 The service sfs cancel command

The service sfs cancel command cancels pending mount operations that are taking place in the

background. This command can be used to cancel repeated background attempts to mount file systems in

situations where the attempts have no possibility of completing, either because there is a configuration error

in the /etc/sfstab file, or a server in the HP SFS system is down.

CAUTION: If a mount operation is pending because the MDS service or an OST service is not responding,

the service sfs cancel command may not cancel the mount operation. The service sfs cancel

command only works on pending mount operations that have not taken place either because the LDAP

server is not responding or because there is a syntax or other error in the /etc/sfstab file.

4.7.8 The service sfs help command

The service sfs help command displays a short description of SFS service commands. For more

information on the SFS service commands, see the sfstab(8) manpage.

4.7.9 Disabling and enabling the SFS service

There are some situations where you must ensure that a file system is not mounted by any client node for a

period of time while other actions are being performed (for example, while a file system repair session is

being run). In such situations, you may find it useful to disable the SFS service to prevent it from automatically

mounting file systems on the client node if the node is rebooted during this period. You can disable the SFS

service on a client node by entering the chkconfig(8) command, as follows:

# chkconfig --del sfs

To enable the SFS service on a client node, enter the following command:

# chkconfig --add sfs

Alternatively, if you do not want to disable the SFS service on client nodes, but want to prevent a particular

file system from being mounted at boot time, you can edit the /etc/sfstab.proto file (or the

/etc/sfstab files) and use the noauto option to specify that the file system is not to be mounted at boot

time.

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Red Hat GLOBAL FILE SYSTEM 4.7 Guia do Utilizador Página 71