NetApp - Disk Sanitization

To Sanitize all disks except vol0 disks (root volume)

Sanitization is enabled by default for all DOT 8.2+ code, if not enabled, run below command to enable.

options licensed_feature.disk_sanitization.enable on 

If DOT 7.xx to 8.1

·            license add XXXXXX  (You can get license from NetApp)

§  Remove controllers from DFM server to avoid any critical/error/warning alerts from DFM.

§  Offline/destroy all volumes and aggregates leaving vol0 and aggr0.

·                        vol offline volumename

·                        vol destroy volumename

·                        aggr offline aggregatename

·                        aggr destroy aggregatename

·                        CF disable (Disable partner node)

·                        Reboot the filer (Obtain approval prior to rebooting the filer)

·                        Send Final ASUP is issued -- options autosupport.doit decommissioning”

§  Once ASUP is Complete, turn off alerts. 

§  Determine all spare drives using the following command(s):

·         vol status -r

·         vol status -s

§  Begin the sanitization process using the following command(s):

·         disk sanitize start  <all numbered drives>  or disk sanitize start -c 7 <all numbered drives>

·         Monitor status using the following command(s):

§  disk sanitize status

§  vol status –m

§  Unsanitized disks will go thru a SECOND PASS process, rerun the “disk sanitize start” command against drives that fail the sanitization

§  Save sanitization logs

§  rdfile /etc/log/sanitized_disks or rdfile /etc/sanitized_disks and save logs 

To Sanitize vol0 disks (root volume)

Ø  Release 3 sanitize disks (disk sanitize release <disk_list>

Ø  Once you release the sanitized disk, it will be in unowned state (disk show –n)

Ø  Assign the disks back to same node (disk assign <disk_list>

Ø  Once you assign disk, it will be in broken disks (vol status –f)

Ø  Unfail the broken/bad disk (disk unfail –s <disk>

Ø  Now you will see all disks under spare (vl status –s)

Ø  create new aggregate with released disks (aggr create newaggr0 –d <disk_list>), it will take time to create aggregate as disks has to be zeroed, check status with (aggr status new aggr0 –v)

Ø  check current vol0 size (vol size vol0)

Ø  create new volume in newly created aggregate (vol create newvol0 newaggr0 <size>)

Ø  restrict newvol0 before starting copy (vol restrict newvol0)

Ø  Copy vol0 to newvol0 (vol copy start –s vol0 newvol0)

Ø  Once copy is 100%, make newvol0 online (vol online newvol0)

Ø  Make newvol0 as root (vol options newvol0 root)

Ø  Rename vol0/newvol0 & aggr0/newaggr0

Ø  To rename – vol rename vol0 oldvol0, vol rename newvol0 vol0, aggr rename aggr0 oldaggr0, aggr rename newaggr0 aggr0

Ø  Reboot node (reboot)

Ø  Once reboot completes, it will take newly created volume (vol0) as root volume

Ø  Check the status (vol status, aggr status)

Ø  Delete oldvol0 and oldaggr0 (vol offline oldvol0, vol destroy oldvol0, aggr offline oldaggr0, aggr destroy oldaggr0)

Ø  Once we delete old volume/aggregate it will release all disks which are in oldaggr0

Ø  Check the spares (vol status –s)

Ø  Start sanitize (disk sanitize start  <disk_list>)

Ø  Check status (disk sanitize status)

Ø  Once sanitization is 100%, collect logs.