Volume options

What the volume options do

The volume options control volume-level operations. You use these options only with the vol options command.

For more information about volume options, see "The vol options command."

The minra option

Default

Off

Description

Configures the filer to perform minimal read ahead. By default, the option is disabled and the filer does aggressive read ahead.

The no_atime_update option

Default

Off

Description

Prevents the update of the access time (atime) on an inode when a file is read. This option prevents inode updates from contending with reads from other files. Use it only on a filer with extremely high read traffic (for example, on a news server used by an Internet access provider or on a filer used mainly as an HTTP server).

The nosnap option

Default

Off

Description

Temporarily disables automatic snapshots.

The nosnapdir option

Default

Off

Description

Makes invisible the snapshot directory that's usually present at the client mount point or at the root of the CIFS share. It also turns off access to the snapshot directory and all snapshot directories under the mount point or the root of the CIFS share.

After you toggle this option, you might not notice the effect immediately because the information about the snapshot directories might still be in the client's attribute cache. To force the change to take effect immediately, unmount and remount the file system.

The nvfail option

Default

Off

Description

Sets the filer to check for NVRAM errors during boot up. Change the value to On when you want the filer to send error messages to notify you of NVRAM errors that can effect the validity of database files.

The raidsize option

Default

None

Description

Sets the maximum size of a RAID group in volume. Must be an integer greater than one.

The root option

Default

None

Description

Makes volume the root volume.

The snapmirrored option

Default

None

Description

The filer automatically sets this option to On if the volume is a mirror for data replication. Otherwise, the option is set to Off. Change the value to Off if you want to convert a mirror to a regular volume. After you make the change, the volume is no longer read-only, and the filer stops making incremental changes to the volume for data replication.


Note: You cannot set this option to On. That is, you cannot use this option to convert a regular volume to a mirror. To use a volume as a mirror, follow the instructions in Chapter 19, "Data Replication Using SnapMirror," to start replicating data to the volume.



Copyright © 1999, Network Appliance, Inc. All rights reserved.

Part No. 210-02334
File: options9.htm
Last updated: 04/26/99 08:12:03