[6.12.0] The compression setting is missing from an imported ZFS pool

Quote

I found the compression is shown as "off", no matter on the webUI

 

Do you mean you've set compression to ON for that pool and it's not on? Please post the diagnostics after doing that and starting the array.

On 6/17/2023 at 10:31 PM, JorgeB said:

 

Do you mean you've set compression to ON for that pool and it's not on? Please post the diagnostics after doing that and starting the array.

I found in Terminal the compression was again shown as "off" after I reboot my NAS, I then stop the array on webUI and manually set Compression to "on" and now in Terminal I can also see the compression is "on". However, with webUI I am not able to set a compression algorithm, so I use a command zfs set compression=lz4 mypool to do this (just an example and I know I should use the real name zpoolhd in my real case).

Now on webUI I only see the compression is shown "on", without showing the compression algorithm, is it normal? Or should I collect a diagnostics per the current state?

Edited June 27, 2023 by Keniji
Corrent the command I used

5 hours ago, Keniji said:

with webUI I am not able to set a compression algorithm, so I use a command zfs set compression=lz4 mypool to do this

You don't need to do this, Unraid already uses lz4 when compression is enabled.

16 hours ago, JorgeB said:

You don't need to do this, Unraid already uses lz4 when compression is enabled.

Thanks, I've checked the compressratio property for some folders, all > 1.00x, and these folders and their contents were written before the time, when zpool has been imported to Unraid 6.12. Since the compression will not apply to old files which were written before the compression is set to "on", I think the compression must be enabled before and Unraid mistakenly recognized and set the compression as "off".

Well, now that my zpool seems to be normal, I hope I am the only one who encountered this issue...

Changed Status to Closed

Changed Priority to Other