How To Delete Busy Snapshots From Netapp DATA ONTAP
We seen snap list of the volume, found few of the snapshots are showing as busy 1% ( 1%) 11% ( 1%) Dec 26 08:42 snapshot_for_backup.7020 (busy,backup[1],dump) it’s holding few percentage of snapshot reserved space, like wise i have few in volume. Volume is getting full i can’t able to deleted the snapshots. Until i release snapshots volume usage will not come down. How to Delete busy snapshots from Netapp DATA ONTAP.
Snapshots are not deleting in any way 🙁 . If i issue snap delete it says snapshot is busy.!!
Ark-Netapp-01> snap delete -V CIFS_SHARE snapshot_for_backup.7437 Snapshot snapshot_for_backup.7437 is busy because of LUN clone, snapmirror, sync mirror, volume clone, snap restore, dump, CIFS share, volume copy, ndmp, WORM volume, SIS Clone
How to Delete Busy Snapshots
This is an big question mark when we are in pressure, production data is not going to serve if volume is full. Don’t worry verify below steps and release your snapshot.
Verify Backup status
Ark-Netapp-01> backup status ID State Type Device Start Date Level Path -- ----------- ---- ------ ------------ ----- --------------- 0 ACTIVE NDMP ndmp Jan 03 11:42 0 /vol/CIFS_SHARE/CIFS/Public 1 ACTIVE NDMP ndmp Dec 26 08:42 0 /vol/CIFS_SHARE/CIFS/Public 2 ACTIVE NDMP ndmp Dec 27 18:42 0 /vol/CIFS_SHARE/CIFS/Public 3 ACTIVE NDMP ndmp Dec 28 06:15 0 /vol/CIFS_SHARE/CIFS/Public 4 ACTIVE NDMP ndmp Dec 29 08:32 0 /vol/CIFS_SHARE/CIFS/Public 5 ACTIVE NDMP ndmp Jan 01 18:08 0 /vol/CIFS_SHARE/CIFS/Public 6 ACTIVE NDMP ndmp Jan 02 03:36 0 /vol/CIFS_SHARE/CIFS/Public
As per above output my snapshots are used by ndmp (dump), If i see from backup software non of the backups are running on NDMP Oops..!!
Let’s try to terminate the backup from Netapp Controller
Ark-Netapp-01> backup terminate 1 Cannot terminate ACTIVE dumps.
Volume does not have any LUN’s to check whether lun has dependent snapshots. Now what to do.? simple trick verify all ndmp sessions from backup software, If non of ndmp backups are running from backup software then simply execute below command to terminate all NDMP sessions from Netapp.
Check NDMP
Ark-Netapp-01> ndmpd status ndmpd ON. Session: 33504 Active version: 4 Operating on behalf of primary host. tape.device: nrst4a mover state: Paused data state: Active data operation: Backup Ark-Netapp-01> ndmpd killall
Now verify backup status
Ark-Netapp-01>backup status ID State Type Device Start Date Level Path -- ----------- ---- ------ ------------ ----- --------------- 0 RESTARTABLE NDMP Jan 03 11:42 0 /vol/WUX_CIFS/CIFS/Public 1 RESTARTABLE NDMP Dec 26 08:42 0 /vol/WUX_CIFS/CIFS/Public 2 RESTARTABLE NDMP Dec 27 18:42 0 /vol/WUX_CIFS/CIFS/Public 3 RESTARTABLE NDMP Dec 28 06:15 0 /vol/WUX_CIFS/CIFS/Public 4 RESTARTABLE NDMP Dec 29 08:32 0 /vol/WUX_CIFS/CIFS/Public 5 RESTARTABLE NDMP Jan 01 18:08 0 /vol/WUX_CIFS/CIFS/Public 6 RESTARTABLE NDMP Jan 02 03:36 0 /vol/WUX_CIFS/CIFS/Public
NDMP sessions has been killed, Terminate all UN-used sessions so that busy snapshots will be released.
Ark-Netapp-01> backup terminate 1 Tue Jan 10 15:02:35 CST [Ark-Netapp-01:dump.terminate:notice]: Terminating dump(1) on /vol/CIFS_SHARE/CIFS/Public
That’s it verify your volume status. Delete Busy Snapshots
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