Veritas File System 5.1 SP1 Administrator"s Guide (5900-1499, April 2011)

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 large files
If you specify the cluster option, the file system is mounted in
shared mode. HP Serviceguard Storage Management Suite
environments require HP Serviceguard to be configured correctly
before a complete clustering environment is enabled.
Support for cluster file
systems
The ckpt=checkpoint_name option mounts a Storage
Checkpoint of a mounted file system that was previously created
by the fsckptadm command.
Using Storage
Checkpoints
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.
Using databases
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.
News file systems
For a temporary file system such as /tmp, where performance is
more important than data integrity, use
tmplog,mincache=tmpcache.
Temporary file
systems
If you specify the mntlock option, you can lock a file system to
disallow unmounting the file system except if the mntunlock
option is specified. The mntlock is useful for applications for
which you do not want the file systems that the applications are
monitoring to be improperly unmounted by other applications or
administrators.
Locking a file system
See “Mounting a VxFS file system” on page 35.
See the fstab(4), fsckptadm(1M), mount(1M), and mount_vxfs(1M) manual pages.
Example of mounting a file system
The following example mounts the file system /dev/vx/dsk/fsvol/vol1 on the
/mnt1 directory with read/write access and delayed logging.
Quick Reference
Mounting a file system
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