Enable Copy-on-write share settings

[vanes]

Hi, please someone explain about the share setting "Enable Copy-on-write"
I found that my shares located on ssd pool it is set to:
system share (docker img) is set to  "No"
appdata share is set to "Auto"
domains share (vDisks) is  set to  "Auto"
is this correct, or I should recreate shares, and change all to "No"?
Should I recreate VM`s or docker img?
Does this affect performance and stability?

Thanks!

[JorgeB]

Turn the help on on the GUI, then post again if you still have questions.

[vanes]

I understand that it should be set to "No" for v disk`s and docker img shares located on HDD`s that are BTRFS formatted ? Should I recreate shares if I use SSD cache pool? Will it be better?

to swich shares to "No" I should copy img files to somewhere else, recreate shares with "No" setings, and then copy img and appdata files back to this shares...

 is this right way? Or I need to recreate my vm`s and docker img after recreating shares?

I'll do as @johnnie.black says. =))

Edited March 31, 2018 by vanes

[JorgeB]

For SSDs you can leave it on for vDisks, note also that checksums will be disabled if COW is set to off.

[vanes]

Thanks @johnnie.black 

What about system share? Does it make sense to enable COW for my system share (Docker img). It is set to "No"

Or it does not matter?

Edited March 31, 2018 by vanes

[JorgeB]

46 minutes ago, vanes said:

Or it does not matter?

Not really