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| Enabling and disabling the qio_cache_enable flag | ||
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| Prev | Enabling Cached Quick I/O on a file system | Next |
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| Enabling and disabling the qio_cache_enable flag | ||
|---|---|---|
| Prev | Enabling Cached Quick I/O on a file system | Next |
As superuser (root), set the qio_cache_enable flag using the vxtunefs command after you mount the file system.
To enable the qio_cache_enable flag for a file system
Use the vxtunefs command as follows:
# /opt/VRTS/bin/vxtunefs -s -o qio_cache_enable=1 /mount_point
# /opt/VRTS/bin/vxtunefs -s -o qio_cache_enable=1 /db02
where /db02 is a VxFS file system containing the Quick I/O files and setting the qio_cache_enable flag to "1" enables Cached Quick I/O. This command enables caching for all the Quick I/O files on this file system.
To disable the flag on the same file system
Use the vxtunefs command as follows:
# /opt/VRTS/bin/vxtunefs -s -o qio_cache_enable=0 /mount_point
# /opt/VRTS/bin/vxtunefs -s -o qio_cache_enable=0 /db02
where /db02 is a VxFS file system containing the Quick I/O files and setting the qio_cache_enable flag to "0" disables Cached Quick I/O. This command disables caching for all the Quick I/O files on this file system.