Disabling Quick I/O


Disabling Quick I/O
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If you need to disable the Quick I/O feature, you need to remount the VxFS file system using a special mount option.

Warning:

Do not disable Quick I/O on VxFS file systems containing Quick I/O containers of type DEVICE. Doing so causes the tablespace containing them to go offline.

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 remount the file system with Quick I/O disabled

Use the mount -o noqio command as follows:

# /opt/VRTS/bin/mount -V vxfs -o remount,noqio special /mount_point

The following example shows how to remount file system db01 with Quick I/O disabled:

# /opt/VRTS/bin/mount -V vxfs -o remount,noqio \
 /dev/vx/dsk/dbdg/vol01 /db01

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