These are two attributes that you will see on zpools/ zvols. You can also see that we have the zvol’s (p3600R1/vm-203-disk-1) compression inherited from the zpool (p3600R1.) We suggest setting compression at the zpool ratio for general purpose storage and then alter explicitly from there. Note it is “compress” not “compression” ratio here. There are many ways you can do this, but the easiest is with “zfs get compression.” Here is an example of using that command: ZFS Get Compressratio And CompressionĪlong with “zfs get compression” another useful command is “zfs get compressratio” which shows the compression ratio.
#OPENZFS LZ4 HOW TO#
We looked back on questions we received in 2017, and a common one was how to find if you have ZFS compression enabled. While there are some ZFS environments that default to lz4 compression, most will not have compression enabled by default. Look at it as the minimal tradeoff to get substantial gains. It is fast and gives a decent amount of benefit. How to find if you have ZFS compression enabledįor many ZFS environments, lz4 compression is the go-to solution. Overall, this is something we see far too many users overlook when it can be an enormous benefit.
Many workloads work really well with ZFS compression.
Combined with sparse volumes (ZFS thin provisioning) this is a must-do option to get more performance and better disk space utilization. As we turn into 2018, there is an obvious new year’s resolution: use ZFS compression. ZFS Compression Performance Lz4 Gzip 7 Off TimeĪn absolutely killer feature of ZFS is the ability to add compression with little hassle.
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