VERITAS Storage Foundation 4.1 Oracle Administrator's Guide

Enabling Cached Quick I/O on the File System Prerelease 8 September 2005, 8:54am
114 VERITAS Storage Foundation for Oracle Administrator’s Guide
Example
/dev/vx/dsk/PRODdg/db01 qio_cache_enable=1
/dev/vx/dsk/PRODdg/db02 qio_cache_enable=1
where /dev/vx/dsk/PRODdg/db01 is the block device on which the file system resides.
For information on how to add tuning parameters, see the tunefstab(4) manual page.
Note vxtunefs can specify a mount point or a block device; tunefstab must always specify
a block device only.
Using vxtunefs to Obtain Tuning Information
Check the setting of the qio_cache_enable flag for each file system using the vxtunefs
command.
▼ To obtain information on only the qio_cache_enable flag setting
Use the grep command with vxtunefs:
# /sbin/fs/vxfs4.1/vxtunefs /mount_point | grep qio_cache_enable
Example
# /sbin/fs/vxfs4.1/vxtunefs /db01 | grep qio_cache_enable
where /db01 is the name of the file system. This command displays only the
qio_cache_enable setting as follows:
qio_cache_enable = 0
You can also use the vxtunefs command to obtain a more complete list of I/O characteristics and
tuning statistics.
▼ To obtain information on all vxtunefs system parameters
Use the vxtunefs command without grep:
# /sbin/fs/vxfs4.1/vxtunefs /mount_point
Example
# /sbin/fs/vxfs4.1/vxtunefs /db01