May 29, 20197 yr I recently attached a new SSD as a VM datastore, and will be using similar base OS for these. At work we use a SAN that deduplicates the base OS files, and saves us a ton of space. I know BTRFS supports some deduplication and compression, is this something I can do while using it in unRAID? This is an unassigned device, not part of the array or a cache drive.
May 30, 20197 yr Community Expert Compression can be enable, AFAIK btrfs deduplication is disable in the kernel, it's still considered experimental, also from what I understand it currently doesn't work together with compression, you can use one or de other.
August 25, 20196 yr On 5/30/2019 at 9:17 AM, johnnie.black said: Compression can be enable How can I enable BTRFS compression? I am new to unRAID and do not see any place to set mount options.
August 26, 20196 yr Community Expert On 8/25/2019 at 3:38 AM, Cypher said: How can I enable BTRFS compression? For now best to enable it with chattr instead of using a mount option: https://btrfs.wiki.kernel.org/index.php/Compression
November 7, 20196 yr I've got a backup mirror of my Steam game library that seems to be an ideal use case for compression. Curious did anyone try @johnnie.black's suggestion? If so how's it working for you? What's the performance impact?
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