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Mount options

The mount command has numerous options to tailor a file system for various functions and environments.

The following table lists some of the specific_options:

Security feature 

If security is important, use blkclear to ensure that deleted files are completely erased before the space is reused. 

Support for large files 

If you specify the largefiles option, you can create files larger than two gigabytes on the file system. The default option is largefiles.  

Support for cluster file systems 

If you specify the cluster option, the file system is mounted in shared mode. Cluster file systems depend on several other Veritas products that must be correctly configured before a complete clustering environment is enabled.  

Using Storage Checkpoints 

The ckpt=checkpoint_name option mounts a Storage Checkpoint of a mounted file system that was previously created by the fsckptadm command. 

Using databases 

If you are using databases with VxFS and if you have installed a license key for the Veritas Quick I/O for Databases feature, the mount command enables Quick I/O by default (the same as specifying the qio option). The noqio option disables Quick I/O. If you do not have Quick I/O, mount ignores the qio option. Alternatively, you can increase database performance using the mount option convosync=direct, which utilizes direct I/O. 

See Quick I/O for Databases

News file systems 

If you are using cnews, use delaylog (or tmplog),mincache=closesync because cnews does an fsync() on each news file before marking it received. The fsync() is performed synchronously as required, but other options are delayed. 

Temporary file systems 

For a temporary file system such as /tmp, where performance is more important than data integrity, use tmplog,mincache=tmpcache

See Choosing mount command options.

See the fsckptadm(1M), mount(1M), mount_vxfs(1M), and vfstab(4) manual pages.