I have a zfs pool and it already have around 3TB of data. I have set the compression=lz4 by running
zfs set compression=lz4 secondarystore
root@home:/home/user1# zfs get compression secondarystore
NAME PROPERTY VALUE SOURCE
secondarystore compression lz4 local
# zfs get compressratio secondarystore
NAME PROPERTY VALUE SOURCE
secondarystore compressratio 1.00x -
Does this compress the existing data or are there any other method of compression using zfs tools ?
moving data out of pool and getting it back to pool compressed those files. 200G-out of pool and back in was 12G