Disabling Quick I/O


Disabling Quick I/O
Prev	Using Veritas Quick I/O	Next

If you need to disable the Quick I/O feature, you first need to convert any Quick I/O files back to regular VxFS files. Then, remount the VxFS file system using a special mount option.

Before disabling Quick I/O, make sure the following condition has been met:

Prerequisite

The file system you are planning to remount must be located in the /etc/filesystems file.

To disable Quick I/O

If the database is active, make it inactive by either shutting down the instance or disabling user connections.
To change Quick I/O files back to regular VxFS files, run the following command from the directory containing the mkqio.dat list:
```
$ /opt/VRTSdb2ed/bin/qio_convertdbfiles -u
```
The list of Quick I/O files in the mkqio.dat file is displayed. For example:
```
.file1::cdev:vxfs: --> file1
.file2::cdev:vxfs: --> file2
.file3::cdev:vxfs: --> file3
.file4::cdev:vxfs: --> file4
.file5::cdev:vxfs: --> file5
```
The qio_convertdbfiles command with the undo option (-u) renames the files from .filename to filename and removes the symbolic link to .filename that was created along with the Quick I/O files.
To remount the file system with Quick I/O disabled, use the mount -o noqio command as follows:
```
# /opt/VRTS/bin/mount -F vxfs -o remount,noqio /mount_point
```

Prev	Up	Next
Recreating Quick I/O files after restoring a database	Home	Creating Quick I/O files in Solaris local zone