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btrfs-progs: docs: Clarify maximum block group size at mkfs time

Message ID 20201012183844.20593-1-marcos@mpdesouza.com (mailing list archive)
State New, archived
Headers show
Series btrfs-progs: docs: Clarify maximum block group size at mkfs time | expand

Commit Message

Marcos Paulo de Souza Oct. 12, 2020, 6:38 p.m. UTC 
From: Marcos Paulo de Souza <mpdesouza@suse.com>

A block group size cannot be larger than 10% of the total filesystem
size.

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
---
 Documentation/mkfs.btrfs.asciidoc | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/Documentation/mkfs.btrfs.asciidoc b/Documentation/mkfs.btrfs.asciidoc
index 630f575c..f2866523 100644
--- a/Documentation/mkfs.btrfs.asciidoc
+++ b/Documentation/mkfs.btrfs.asciidoc
@@ -284,6 +284,8 @@  sometimes the terms are used interchangeably
 A typical size of metadata block group is 256MiB (filesystem smaller than
 50GiB) and 1GiB (larger than 50GiB), for data it's 1GiB. The system block group
 size is a few megabytes.
++
+For smaller filesystems, the block group size is limited to 10% of the filesystem size.
 
 *RAID*::
 a block group profile type that utilizes RAID-like features on multiple