On Wed, Nov 10, 2010 at 09:53:23PM -0600, Mitch Harder wrote: > On Wed, Nov 10, 2010 at 8:10 PM, Josef Bacik <josef@xxxxxxxxxx> wrote: > > On Wed, Nov 10, 2010 at 12:02:18PM -0600, Mitch Harder wrote: > >> Update the mkfs.btrfs man page for the -M option to mix data and > >> metadata chunks. > >> > >> Signed-off-by: Mitch Harder <mitch.harder@xxxxxxxxxxxxxxxx> > >> --- > >> man/mkfs.btrfs.8.in | 5 +++++ > >> 1 files changed, 5 insertions(+), 0 deletions(-) > >> > >> diff --git a/man/mkfs.btrfs.8.in b/man/mkfs.btrfs.8.in > >> index 1e14c6c..c23dddc 100644 > >> --- a/man/mkfs.btrfs.8.in > >> +++ b/man/mkfs.btrfs.8.in > >> @@ -9,6 +9,7 @@ mkfs.btrfs \- create an btrfs filesystem > >> [ \fB \-l\fP\fI leafsize\fP ] > >> [ \fB \-L\fP\fI label\fP ] > >> [ \fB \-m\fP\fI metadata profile\fP ] > >> +[ \fB \-M\fP\fI mixed data+metadata\fP ] > >> [ \fB \-n\fP\fI nodesize\fP ] > >> [ \fB \-s\fP\fI sectorsize\fP ] > >> [ \fB \-h\fP ] > >> @@ -45,6 +46,10 @@ Specify a label for the filesystem. > >> Specify how metadata must be spanned across the devices specified. Valid > >> values are raid0, raid1, raid10 or single. > >> .TP > >> +\fB\-M\fR, \fB\-\-mixed\fR > >> +Mix data and metadata chunks together for more efficient space > >> +utilization. > >> +.TP > >> \fB\-n\fR, \fB\-\-nodesize \fIsize\fR > >> Specify the nodesize. By default the value is set to the pagesize. > >> .TP > >> -- > >> 1.7.2.2 > > > > Let's mention that it's for smaller filesystems since it has a significant > > performance impact when using mixed block groups on larger filesystems. Thanks, > > > > Josef > > > > OK, how about: > > Mix data and metadata chunks together for more efficient space > utilization, especially on smaller file systems. Incurs a performance > penalty. Let's say This feature incurs a performance penalty in larger filesystems, it is recommended for use with filesystems of 1 GiB or smaller. Thanks, Josef -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
