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author | Dimitri John Ledkov <xnox@ubuntu.com> | 2017-02-13 11:24:33 +0000 |
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committer | Dimitri John Ledkov <xnox@ubuntu.com> | 2017-02-13 11:24:33 +0000 |
commit | 4305d024938113df5d73021a09eb2a991f54ca2f (patch) | |
tree | d9e7ecc9db14bcc1394607a9e6c644a8b93e9bea /Documentation/mkfs.btrfs.asciidoc | |
parent | e693f0e4ffb1776a05b78264ee3d93d5f07efede (diff) |
New upstream release Closes: #849353, #817806, #854915, #845473
Diffstat (limited to 'Documentation/mkfs.btrfs.asciidoc')
-rw-r--r-- | Documentation/mkfs.btrfs.asciidoc | 27 |
1 files changed, 7 insertions, 20 deletions
diff --git a/Documentation/mkfs.btrfs.asciidoc b/Documentation/mkfs.btrfs.asciidoc index 6515e145..46a4d2d5 100644 --- a/Documentation/mkfs.btrfs.asciidoc +++ b/Documentation/mkfs.btrfs.asciidoc @@ -7,25 +7,7 @@ mkfs.btrfs - create a btrfs filesystem SYNOPSIS -------- -*mkfs.btrfs* -$$[-A|--alloc-start <alloc-start>]$$ -$$[-b|--byte-count <byte-count>]$$ -$$[-d|--data <data-profile>]$$ -$$[-m|--metadata <metadata profile>]$$ -$$[-M|--mixed]$$ -$$[-l|--leafsize <leafsize>]$$ -$$[-n|--nodesize <nodesize>]$$ -$$[-s|--sectorsize <sectorsize>]$$ -$$[-L|--label <label>]$$ -$$[-K|--nodiscard]$$ -$$[-r|--rootdir <rootdir>]$$ -$$[-O|--features <feature1>[,<feature2>...]]$$ -$$[-U|--uuid <UUID>]$$ -$$[-f|--force]$$ -$$[-q|--quiet]$$ -$$[--help]$$ -$$[-V|--version]$$ -$$<device> [<device>...]$$ +*mkfs.btrfs* [options] <device> [<device>...] DESCRIPTION ----------- @@ -118,6 +100,8 @@ bytes and must not contain newline characters. *-K|--nodiscard*:: 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>*:: Populate the toplevel subvolume with files from 'rootdir'. This does not @@ -182,6 +166,9 @@ root partition created with RAID1/10/5/6 profiles. The mount action can happen before all block devices are discovered. The waiting is usually done on the initramfs/initrd systems. +As of kernel 4.9, RAID5/6 is still considered experimental and shouldn't be +employed for production use. + FILESYSTEM FEATURES ------------------- @@ -271,7 +258,7 @@ There are the following block group types available: | RAID6 | 1 | 2 | 3 to N - 2 | 3/any ^(see note 3)^ |============================================================= -WARNING: It's not recommended to build btrfs with RAID0/1/10/5/6 prfiles on +WARNING: It's not recommended to build btrfs with RAID0/1/10/5/6 profiles on partitions from the same device. Neither redundancy nor performance will be improved. |