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Note: The name of the file system does not seem to have an official capitalization, so the rule for the ArchWiki has been arbitrarily set to use "Btrfs" (capital "B" and the rest lower-case); "btrfs" and "BTRFS" are therefore wrong spellings in this wiki. -- Kynikos (talk) 09:36, 6 January 2014 (UTC)

"Displaying used/free space" needs rewrite

Section "Displaying used/free space" needs a rewrite. I will hopefully do that when I have time.

—This unsigned comment is by Mearon (talk) 03:28, 17 November 2016‎. Please sign your posts with ~~~~!

Proposal to add lzo compression warning

The Debian btrfs page has a warning about compress=lzo being possibly dangerous, citing the thread here. I propose adding a warning section that simply notes this possibility and cites either the Debian wiki, the linked thread, or both. -- altercation

It might be worth a note pointing to the thread, but the user in that thread reports he was using RAID6, which is already warned against in the wiki article. The rest of it seems to be just guessing that lzo is affecting it. Hard to know since he was using RAID6. -- Rdeckard (talk) 00:50, 23 March 2017 (UTC)

cp --reflink and the actual meaning of CoW

If one wishes to create a lightweight copy, --reflink must be used even on files with CoW enabled. Anyone on btrfs filesystem can easily test this. Claims of this being required for only files with CoW explicitly disabled are false. --reflink is not the same thing as CoW - this is better explained in


—This unsigned comment is by Vtj (talk) 12:07, 27 May 2017‎. Please sign your posts with ~~~~!

Right, thanks for fixing this in the article. -- Edh (talk) 11:43, 28 May 2017 (UTC)

ext4 to btrfs conversion

I just wanted to say, that the conversion worked without any problems for me. I ran the command from a live usb on a luks encrypted lvm container which had an ext4 partition inside. I changed the fstab (and ran mkinitcpio but I don't know if it was neccessary) and my system booted exactly as before, just with btrfs.

Z3ntu (talk) 17:37, 19 July 2017 (UTC)