diff options
Diffstat (limited to 'man/mkfs.btrfs.8.in')
| -rw-r--r-- | man/mkfs.btrfs.8.in | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/man/mkfs.btrfs.8.in b/man/mkfs.btrfs.8.in index 72025ed7..45386587 100644 --- a/man/mkfs.btrfs.8.in +++ b/man/mkfs.btrfs.8.in @@ -47,7 +47,10 @@ Specify a label for the filesystem. .TP \fB\-m\fR, \fB\-\-metadata \fIprofile\fR Specify how metadata must be spanned across the devices specified. Valid -values are raid0, raid1, raid10 or single. +values are raid0, raid1, raid10, single or dup. Single device will have dup +set by default except in the case of SSDs which will default to single. This is +because SSDs can remap blocks internally so duplicate blocks could end up in the +same erase block which negates the benefits of doing metadata duplication. .TP \fB\-M\fR, \fB\-\-mixed\fR Mix data and metadata chunks together for more efficient space @@ -69,6 +72,9 @@ Do not perform whole device TRIM operation by default. .TP \fB\-V\fR, \fB\-\-version\fR Print the \fBmkfs.btrfs\fP version and exit. +.SH UNIT +As default the unit is the byte, however it is possible to append a suffix +to the arguments like \fBk\fP for KBytes, \fBm\fP for MBytes... .SH AVAILABILITY .B mkfs.btrfs is part of btrfs-progs. Btrfs is currently under heavy development, |