vagrantprodigy Posted May 29, 2019 Share Posted May 29, 2019 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. 1 Quote Link to comment
JorgeB Posted May 30, 2019 Share Posted May 30, 2019 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. Quote Link to comment
Cypher Posted August 25, 2019 Share Posted August 25, 2019 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. Quote Link to comment
JorgeB Posted August 26, 2019 Share Posted August 26, 2019 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 Quote Link to comment
Lev Posted November 7, 2019 Share Posted November 7, 2019 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? Quote Link to comment
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