kb.hurricane-ridge.com » NetApp

Increasing Maximum Number of Files on a NetApp Flexvol

admin — Fri, 25 Sep 2009 13:27:16 +0000

Use the “maxfiles” command to both query and increase the number of inodes in a FlexVol:
toaster> maxfiles svault01 Volume svault01: maximum number of files is currently 31876689 (30927298 used). toaster> maxfiles svault01 40000000

Note that an increased maxfiles value can never be decreased, and increases in maxfiles has capacity and other implications. In ONTAP’s words:

Increasing the maximum number of files consumes disk space, and the number can never be decreased. Configuring a large number of inodes can also result in less available memory after an upgrade, which means you might not be able to run WAFL_check.

Undoing A-SIS Deduplication

admin — Wed, 25 Mar 2009 18:22:27 +0000

First, stop any running deduplication operations on the volume in question:

filer> sis stop /vol/vol1 Operation is currently idle: /vol/vol1

Next, disable A-SIS on the volume:

filer> sis off /vol/vol1 SIS for "/vol/vol1" is disabled.

Finally, make the volume “fat” again:

filer> priv set advanced Warning: These advanced commands are potentially dangerous; use them only when directed to do so by Network Appliance personnel. filer*> sis undo /vol/vol1 filer*> sis status /vol/vol1 Path State Status Progress /vol/vol1 Disabled Undoing 6810 MB Processed filer*> priv set filer>

Be sure to do the math to make sure you will have enough space in the fat volume once deduplication is undone. See my Practical Limits of NetApp Deduplication post elsewhere for more on this.

Configuring a FlexVol to grow automatically with “vol autosize”

admin — Wed, 28 Jan 2009 18:10:49 +0000

FlexVol autogrowth is configured using the vol autosize command; example for filer “toaster” and volume /vol/vol3:

 toaster> vol autosize vol3 -m 2t -i 20g on

To configure growth to happen before snapshot deletion, use the try_first option:

 toaster> vol options vol3 try_first volume_grow

ONTAP autodelete settings for a FlexVol

admin — Wed, 28 Jan 2009 18:05:10 +0000

Example session configuring autodelete settings for /vol/vol3 on filer “toaster”:

 toaster> snap autodelete vol3 show
 snapshot autodelete settings for vol3:
 state                           : off
 commitment                      : try
 trigger                         : volume
 target_free_space               : 20%
 delete_order                    : oldest_first
 defer_delete                    : user_created
 prefix                          : (not specified)

 toaster> snap autodelete vol3 on
 snap autodelete: snap autodelete enabled

 toaster> snap autodelete vol3 target_free_space 10
 snap autodelete: snap autodelete configuration options set

 toaster> snap autodelete vol3 defer_delete none
 snap autodelete: snap autodelete configuration options set

 toaster> snap autodelete vol3 show
 snapshot autodelete settings for vol3:
 state                           : on
 commitment                      : try
 trigger                         : volume
 target_free_space               : 10%
 delete_order                    : oldest_first
 defer_delete                    : none
 prefix                          : (not specified)

To configure snapshot deletion to happen before volume growth, use the try_first option:

 toaster> vol options vol3 try_first snap_delete

Shell one-liner to parse NetApp user quota data

admin — Wed, 07 Jan 2009 22:31:48 +0000

Assuming you have a dump of quota report from the filer in question at /tmp/toaster.quota, and want to see the top twenty disk users:

egrep '^user' /tmp/toaster.quota | awk '{ print $5, $2 }' | sort -rn | head -20