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btrfs-progs: docs: clarify trim after mkfs -K 

A user question on IRC about mkfs -K and mount with discard.

Signed-off-by: David Sterba <dsterba@suse.com>
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David Sterba 2016-12-06 18:26:31 +01:00
parent a0ac307b0c
commit b3afc1e814
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Documentation/mkfs.btrfs.asciidoc
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@ -100,6 +100,8 @@ bytes and must not contain newline characters.
*-K|--nodiscard*:: *-K|--nodiscard*::
Do not perform whole device TRIM operation on devices that are capable of that. Do not perform whole device TRIM operation on devices that are capable of that.
This does not affect discard/trim operation when the filesystem is mounted.
Please see the mount option 'discard' for that in `btrfs`(5).
*-r|--rootdir <rootdir>*:: *-r|--rootdir <rootdir>*::
Populate the toplevel subvolume with files from 'rootdir'. This does not Populate the toplevel subvolume with files from 'rootdir'. This does not