path: root/misc/mke2fs.8.in
diff options
Diffstat (limited to 'misc/mke2fs.8.in')
1 files changed, 15 insertions, 0 deletions
diff --git a/misc/mke2fs.8.in b/misc/mke2fs.8.in
index c7db2401..a6bded4c 100644
--- a/misc/mke2fs.8.in
+++ b/misc/mke2fs.8.in
@@ -26,6 +26,10 @@ mke2fs \- create an ext2/ext3 filesystem
.I blocks-per-group
+.B \-G
+.I number-of-groups
.B \-i
.I bytes-per-inode
@@ -232,6 +236,12 @@ option rather than manipulating the number of blocks per group.)
This option is generally used by developers who
are developing test cases.
+.BI \-G " number-of-groups"
+Specify the number of block goups that will be packed together to
+create one large virtual block group on an ext4 filesystem. This
+improves meta-data locality and performance on meta-data heavy
+workloads. The number of goups must be a power of 2.
.BI \-i " bytes-per-inode"
Specify the bytes/inode ratio.
.B mke2fs
@@ -421,6 +431,11 @@ Use hashed b-trees to speed up lookups in large directories.
.B filetype
Store file type information in directory entries.
+.B flex_bg
+Allow bitmaps and inode tables for a block group to be placed anywhere
+on the storage media (use with -G option to group meta-data in order
+to create a large virtual block group).
.B has_journal
Create an ext3 journal (as if using the
.B \-j