VERITAS File System 4.1 Administrator's Guide

VERITAS File System Quick Reference
Veritas File System Quick Reference
Appendix A190
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 Functionality and Performance” on page 161 for more information.
• 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” on page 40” and the following manual pages for
more information about the mount command and its available options:
• fstab(4)
• fsckptadm(1M)
• mount(1M)
• mount_vxfs(1M)
Example A-2 To mount the file system /dev/vx/dsk/fsvol/vol1 on the /ext
directory with read/write access and delayed logging
Enter:
# mount -F vxfs -o delaylog /dev/vx/dsk/fsvol/vol1 /ext
How to Edit the fstab File
You can edit the /etc/fstab file to automatically mount a file system at boot time. You must
specify:
• the special block device name to mount
• the mount point
• the file system type (vxfs)
• the mount options
• the backup frequency
• which fsck pass looks at the file system