diff options
| author | Qu Wenruo <wqu@suse.com> | 2017-10-19 17:13:55 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-01-08 18:15:15 +0100 |
| commit | 1c9c5f7fb3f6a2182d230d469b22b3b1329f24d8 (patch) | |
| tree | 7bdd2d05a882a68d1883e16d2970f17152f2cff9 /Documentation | |
| parent | c28418daed603d4943edc8b213b91f8d1e2b9fe3 (diff) | |
btrfs-progs: mkfs: Separate shrink from rootdir
Make --shrink a separate option for --rootdir, and change the default to
off.
The shrinking behaviour is not a commonly used feature but can be useful
for creating minimal pre-filled images, in one step, without requiring
to mount.
Signed-off-by: Qu Wenruo <wqu@suse.com>
[ update changelog and error messages ]
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/mkfs.btrfs.asciidoc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/mkfs.btrfs.asciidoc b/Documentation/mkfs.btrfs.asciidoc index f69c529d..153bb87e 100644 --- a/Documentation/mkfs.btrfs.asciidoc +++ b/Documentation/mkfs.btrfs.asciidoc @@ -101,6 +101,17 @@ 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 require root permissions and does not mount the filesystem. ++ +NOTE: This option may enlarge the image or file to ensure it's large enough to +contain the files from 'rootdir'. + +*--shrink*: +Shrink the filesystem to its minimal size, only works with *-r|--rootdir* +option. ++ +NOTE: If the destination is regular file, this option will also reduce the +file size. Or it will only reduce the filesystem available space. +Extra space will not be usable unless resized using 'btrfs filesystem resize'. *-O|--features <feature1>[,<feature2>...]*:: A list of filesystem features turned on at mkfs time. Not all features are |