Can I convert a Flexvol to FlexGroup without rewarming the tiered data?
Applies to
- ONTAP 9
- FlexGroup
- FabricPool
Answer
Yes. FabricPool Flexible volumes with tiered data can be converted to FlexGroup without rewarming the data back to performance tier.
Additional Information
Example of converting to Flexgroup without first rewarming the data back to the performance tier
1. The following volume is not a Flexgroup
::*> volume show -volume myvol -fields is-flexgroup,tiering-policy
vserver volume is-flexgroup tiering-policy
------- ------ ------------ --------------
svm1 myvol false auto
2. View the current footprint in your storage tier
::> volume show-footprint myvol
Vserver : svm1
Volume : myvol
Feature Used Used%
-------------------------------- ---------- -----
Volume Data Footprint 14.09GB 0%
Footprint in Performance Tier 268.5MB 2%
Footprint in <your storage Tier> 13.84GB 98%
Volume Guarantee 0B 0%
Flexible Volume Metadata 683.9MB 0%
Deduplication 61.40MB 0%
Cross Volume Deduplication 143.0MB 0%
Delayed Frees 6.09MB 0%
Total Footprint 14.97GB 0%
3. We will now convert the volume to FlexGroup
::> set advanced
Warning: These advanced commands are potentially dangerous; use them only when directed to do so by NetApp personnel.
Do you want to continue? {y|n}: y
a. run the check-only option first
::*> volume conversion start -volume myvol -foreground true -check-only true
Conversion of volume "myvol" in Vserver "svm1" to a FlexGroup can proceed with the following warnings:
* After the volume is converted to a FlexGroup, it will not be possible to change it back to a flexible volume.
b. start the conversion
::*> volume conversion start -volume myvol -foreground true
Warning: After the volume is converted to a FlexGroup, it will not be possible to change it back to a flexible volume.
Do you want to continue? {y|n}: y
[Job 35] Job succeeded: success
4. Confirm the data has not rewarmed back to the performance Tier
::*> volume show -volume myvol -fields is-flexgroup,tiering-policy
vserver volume is-flexgroup tiering-policy
------- ------ ------------ --------------
svm1 myvol true auto
::*> volume show-footprint myvol__0001
Vserver : svm1
Volume : myvol__0001
Feature Used Used%
-------------------------------- ---------- -----
Volume Data Footprint 14.15GB 0%
Footprint in Performance Tier 276.7MB 2%
Footprint in sgws01 13.84GB 98%
Volume Guarantee 0B 0%
Flexible Volume Metadata 683.9MB 0%
Deduplication 61.40MB 0%
Cross Volume Deduplication 143.0MB 0%
Delayed Frees 12.92MB 0%
Total Footprint 15.03GB 0%