507 lines
17 KiB
Groff
507 lines
17 KiB
Groff
.TH BTRFS 8 "" "btrfs" "btrfs"
|
|
.\"
|
|
.\" Man page written by Goffredo Baroncelli <kreijack@inwind.it> (Feb 2010)
|
|
.\"
|
|
.SH NAME
|
|
btrfs \- control a btrfs filesystem
|
|
.SH SYNOPSIS
|
|
\fBbtrfs\fP \fBsubvolume snapshot\fP\fI [-r] <source> [<dest>/]<name>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBsubvolume delete\fP\fI <subvolume> [<subvolume>...]\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBsubvolume create\fP\fI [<dest>/]<name>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBsubvolume list\fP\fI [-acgoprts] [-G [+|-]value] [-C [+|-]value] [--sort=rootid,gen,ogen,path] <path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBsubvolume set-default\fP\fI <id> <path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBsubvolume get-default\fP\fI <path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBsubvolume find-new\fP\fI <subvolume> <last_gen>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBsubvolume show\fP\fI <path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBfilesystem defragment\fP -c[zlib|lzo] [-l \fIlen\fR] \
|
|
[-s \fIstart\fR] [-t \fIsize\fR] -[vf] <\fIfile\fR>|<\fIdir\fR> \
|
|
[<\fIfile\fR>|<\fIdir\fR>...]
|
|
.PP
|
|
\fBbtrfs\fP \fBfilesystem sync\fP\fI <path> \fP
|
|
.PP
|
|
\fBbtrfs\fP \fBfilesystem resize\fP\fI [devid:][+/\-]<size>[gkm]|[devid:]max <filesystem>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBfilesystem label\fP\fI <dev> [newlabel]\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBfilesystem balance\fP\fI <path> \fP
|
|
.PP
|
|
\fBbtrfs\fP \fBdevice scan\fP\fI [--all-devices|<device> [<device>...]]\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBdevice stats\fP [-z] {\fI<path>\fP|\fI<device>\fP}
|
|
.PP
|
|
\fBbtrfs\fP \fBdevice add\fP\fI <device> [<device>...] <path> \fP
|
|
.PP
|
|
\fBbtrfs\fP \fBdevice delete\fP\fI <device> [<device>...] <path> \fP
|
|
.PP
|
|
\fBbtrfs\fP \fBreplace start\fP \fI[-Bfr] <srcdev>|<devid> <targetdev> <path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBreplace status\fP \fI[-1] <path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBreplace cancel\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBscrub start\fP [-Bdqru] [-c ioprio_class -n ioprio_classdata] {\fI<path>\fP|\fI<device>\fP}
|
|
.PP
|
|
\fBbtrfs\fP \fBscrub cancel\fP {\fI<path>\fP|\fI<device>\fP}
|
|
.PP
|
|
\fBbtrfs\fP \fBscrub resume\fP [-Bdqru] [-c ioprio_class -n ioprio_classdata] {\fI<path>\fP|\fI<device>\fP}
|
|
.PP
|
|
\fBbtrfs\fP \fBscrub status\fP [-d] {\fI<path>\fP|\fI<device>\fP}
|
|
.PP
|
|
\fBbtrfs\fP \fBinspect-internal inode-resolve\fP [-v] \fI<inode>\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBinspect-internal logical-resolve\fP
|
|
[-Pv] [-s size] \fI<logical>\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBinspect-internal subvolid-resolve\fP \fI<subvolid>\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBqgroup assign\fP \fI<src>\fP \fI<dst>\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBqgroup remove\fP \fI<src>\fP \fI<dst>\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBqgroup create\fP \fI<qgroupid>\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBqgroup destroy\fP \fI<qgroupid>\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBqgroup show\fP \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBqgroup limit\fP [options] \fI<size>\fP|\fBnone\fP [\fI<qgroupid>\fP] \fI<path>\fP
|
|
.PP
|
|
\fBbtrfs\fP \fBhelp|\-\-help \fP\fI\fP
|
|
.PP
|
|
\fBbtrfs\fP \fB<command> \-\-help \fP\fI\fP
|
|
.PP
|
|
.SH DESCRIPTION
|
|
.B btrfs
|
|
is used to control the filesystem and the files and directories stored. It is
|
|
the tool to create or destroy a snapshot or a subvolume for the
|
|
filesystem, to defrag a file or a directory, flush the data to the disk,
|
|
to resize the filesystem, to scan the device.
|
|
|
|
It is possible to abbreviate the commands unless the commands are ambiguous.
|
|
For example: it is possible to run
|
|
.I btrfs sub snaps
|
|
instead of
|
|
.I btrfs subvolume snapshot.
|
|
But
|
|
.I btrfs file s
|
|
is not allowed, because
|
|
.I file s
|
|
may be interpreted both as
|
|
.I filesystem show
|
|
and as
|
|
.I filesystem sync.
|
|
In this case
|
|
.I btrfs
|
|
returns filesystem sync
|
|
If a command is terminated by
|
|
.I --help
|
|
, the detailed help is showed. If the passed command matches more commands,
|
|
detailed help of all the matched commands is showed. For example
|
|
.I btrfs dev --help
|
|
shows the help of all
|
|
.I device*
|
|
commands.
|
|
|
|
.SH COMMANDS
|
|
.TP
|
|
|
|
\fBsubvolume snapshot\fR\fI [-r] <source> [<dest>/]<name>\fR
|
|
Create a writable/readonly snapshot of the subvolume \fI<source>\fR with the
|
|
name \fI<name>\fR in the \fI<dest>\fR directory. If \fI<source>\fR is not a
|
|
subvolume, \fBbtrfs\fR returns an error. If \fI-r\fR is given, the snapshot
|
|
will be readonly.
|
|
.TP
|
|
|
|
\fBsubvolume delete\fR\fI <subvolume> [<subvolume>...]\fR
|
|
Delete the subvolume \fI<subvolume>\fR. If \fI<subvolume>\fR is not a
|
|
subvolume, \fBbtrfs\fR returns an error.
|
|
.TP
|
|
|
|
\fBsubvolume create\fR\fI [<dest>/]<name>\fR
|
|
Create a subvolume in \fI<dest>\fR (or in the current directory if
|
|
\fI<dest>\fR is omitted).
|
|
.TP
|
|
|
|
\fBsubvolume list\fR\fI [-acgoprts] [-G [+|-]value] [-C [+|-]value] [--sort=rootid,gen,ogen,path] <path>\fR
|
|
.RS
|
|
List the subvolumes present in the filesystem \fI<path>\fR. For every
|
|
subvolume the following information is shown by default.
|
|
ID <ID> top level <ID> path <path>
|
|
where path is the relative path of the subvolume to the \fItop level\fR
|
|
subvolume.
|
|
|
|
The subvolume's ID may be used by the \fBsubvolume set-default\fR command, or
|
|
at mount time via the \fIsubvolid=\fR option.
|
|
If \fI-p\fR is given, then \fIparent <ID>\fR is added to the output between ID
|
|
and top level. The parent's ID may be used at mount time via the
|
|
\fIsubvolrootid=\fR option.
|
|
|
|
\fB-t\fP print the result as a table.
|
|
|
|
\fB-a\fP print all the subvolumes in the filesystem and distinguish between
|
|
absolute and relative path with respect to the given <path>.
|
|
|
|
\fB-c\fP print the ogeneration of the subvolume, aliases: ogen or origin generation
|
|
|
|
\fB-g\fP print the generation of the subvolume
|
|
|
|
\fB-u\fP print the UUID of the subvolume
|
|
|
|
\fB-o\fP print only subvolumes bellow specified <path>.
|
|
|
|
\fB-r\fP only readonly subvolumes in the filesystem will be listed.
|
|
|
|
\fB-s\fP only snapshot subvolumes in the filesystem will be listed.
|
|
|
|
\fB-G [+|-]value\fP
|
|
list subvolumes in the filesystem that its generation is
|
|
>=, <= or = value. '+' means >= value, '-' means <= value, If there is
|
|
neither '+' nor '-', it means = value.
|
|
|
|
\fB-C [+|-]value\fP
|
|
list subvolumes in the filesystem that its ogeneration is
|
|
>=, <= or = value. The usage is the same to '-g' option.
|
|
|
|
\fB--sort=rootid,gen,ogen,path\fP
|
|
list subvolumes in order by specified items.
|
|
you can add '+' or '-' in front of each items, '+' means ascending, '-'
|
|
means descending. The default is ascending.
|
|
|
|
for \fB--sort\fP you can combine some items together by ',', just like
|
|
\f--sort=+ogen,-gen,path,rootid\fR.
|
|
.RE
|
|
.TP
|
|
|
|
\fBsubvolume set-default\fR\fI <id> <path>\fR
|
|
Set the subvolume of the filesystem \fI<path>\fR which is mounted as
|
|
\fIdefault\fR. The subvolume is identified by \fI<id>\fR, which
|
|
is returned by the \fBsubvolume list\fR command.
|
|
.TP
|
|
|
|
\fBsubvolume get-default\fR\fI <path>\fR
|
|
Get the default subvolume of the filesystem \fI<path>\fR. The output format
|
|
is similar to \fBsubvolume list\fR command.
|
|
.TP
|
|
|
|
\fBsubvolume find-new\fR\fI <subvolume> <last_gen>\fR
|
|
List the recently modified files in a subvolume, after \fI<last_gen>\fR ID.
|
|
.TP
|
|
|
|
\fBsubvolume show\fR\fI <path>\fR
|
|
Show information of a given subvolume in the \fI<path>\fR.
|
|
.TP
|
|
|
|
\fBfilesystem defragment\fP -c[zlib|lzo] [-l \fIlen\fR] [-s \fIstart\fR] \
|
|
[-t \fIsize\fR] -[vf] <\fIfile\fR>|<\fIdir\fR> [<\fIfile\fR>|<\fIdir\fR>...]
|
|
|
|
Defragment file data and/or directory metadata. To defragment all files in a
|
|
directory you have to specify each one on its own or use your shell wildcards.
|
|
|
|
The start position and the number of bytes to defragment can be specified by
|
|
\fIstart\fR and \fIlen\fR. Any extent bigger than threshold will be
|
|
considered already defragged. Use 0 to take the kernel default, and use 1 to
|
|
say every single extent must be rewritten. You can also turn on compression in
|
|
defragment operations.
|
|
|
|
\fB-v\fP be verbose
|
|
|
|
\fB-c\fP compress file contents while defragmenting
|
|
|
|
\fB-f\fP flush filesystem after defragmenting
|
|
|
|
\fB-s start\fP defragment only from byte \fIstart\fR onward
|
|
|
|
\fB-l len\fP defragment only up to \fIlen\fR bytes
|
|
|
|
\fB-t size\fP defragment only files at least \fIsize\fR bytes big
|
|
|
|
For \fBstart\fP, \fBlen\fP, \fBsize\fP it is possible to append a suffix
|
|
like \fBk\fP for 1 KBytes, \fBm\fP for 1 MBytes...
|
|
|
|
NOTE: defragmenting with kernels up to 2.6.37 will unlink COW-ed copies of data,
|
|
don't use it if you use snapshots, have de-duplicated your data or made
|
|
copies with \fBcp --reflink\fP.
|
|
.TP
|
|
|
|
\fBfilesystem sync\fR\fI <path> \fR
|
|
Force a sync for the filesystem identified by \fI<path>\fR.
|
|
.TP
|
|
|
|
.\"
|
|
.\" Some wording are extracted by the resize2fs man page
|
|
.\"
|
|
|
|
\fBfilesystem resize\fR\fI [devid:][+/\-]<size>[gkm]|[devid:]max <path>\fR
|
|
Resize a filesystem identified by \fI<path>\fR for the underlying device
|
|
\fIdevid\fR. The \fIdevid\fR can be found with \fBbtrfs filesystem show\fR and
|
|
defaults to 1 if not specified.
|
|
The \fI<size>\fR parameter specifies the new size of the filesystem.
|
|
If the prefix \fI+\fR or \fI\-\fR is present the size is increased or decreased
|
|
by the quantity \fI<size>\fR.
|
|
If no units are specified, the unit of the \fI<size>\fR parameter defaults to
|
|
bytes. Optionally, the size parameter may be suffixed by one of the following
|
|
units designators: 'K', 'M', or 'G', kilobytes, megabytes, or gigabytes,
|
|
respectively.
|
|
|
|
If 'max' is passed, the filesystem will occupy all available space on the
|
|
device \fIdevid\fR.
|
|
|
|
The \fBresize\fR command \fBdoes not\fR manipulate the size of underlying
|
|
partition. If you wish to enlarge/reduce a filesystem, you must make sure you
|
|
can expand the partition before enlarging the filesystem and shrink the
|
|
partition after reducing the size of the filesystem. This can done using
|
|
\fBfdisk(8)\fR or \fBparted(8)\fR to delete the existing partition and recreate
|
|
it with the new desired size. When recreating the partition make sure to use
|
|
the same starting disk cylinder as before.
|
|
.TP
|
|
|
|
\fBfilesystem label\fP\fI <dev> [newlabel]\fP
|
|
Show or update the label of a filesystem. \fI<dev>\fR is used to identify the
|
|
filesystem.
|
|
If a \fInewlabel\fR optional argument is passed, the label is changed. The
|
|
following constraints exist for a label:
|
|
.IP
|
|
- the maximum allowable length shall be less or equal than 256 chars
|
|
.IP
|
|
- the label shall not contain the '/' or '\\' characters.
|
|
|
|
NOTE: Currently there are the following limitations:
|
|
.IP
|
|
- the filesystem has to be unmounted
|
|
.IP
|
|
- the filesystem should not have more than one device.
|
|
.TP
|
|
|
|
\fBfilesystem show\fR [--all-devices|<uuid>|<label>]\fR
|
|
Show the btrfs filesystem with some additional info. If no \fIUUID\fP or
|
|
\fIlabel\fP is passed, \fBbtrfs\fR show info of all the btrfs filesystem.
|
|
If \fB--all-devices\fP is passed, all the devices under /dev are scanned;
|
|
otherwise the devices list is extracted from the /proc/partitions file.
|
|
.TP
|
|
|
|
\fBfilesystem balance\fR \fI<path>\fR
|
|
Balance the chunks of the filesystem identified by \fI<path>\fR
|
|
across the devices.
|
|
.TP
|
|
|
|
\fBdevice stats\fP [-z] {\fI<path>\fP|\fI<device>\fP}
|
|
Read and print the device IO stats for all devices of the filesystem
|
|
identified by \fI<path>\fR or for a single \fI<device>\fR.
|
|
|
|
.RS
|
|
\fIOptions\fR
|
|
.TP
|
|
.B -z
|
|
Reset stats to zero after reading them.
|
|
.RE
|
|
.TP
|
|
|
|
\fBdevice add\fR\fI <dev> [<dev>..] <path>\fR
|
|
Add device(s) to the filesystem identified by \fI<path>\fR.
|
|
.TP
|
|
|
|
\fBdevice delete\fR\fI <dev> [<dev>..] <path>\fR
|
|
Remove device(s) from a filesystem identified by \fI<path>\fR.
|
|
.TP
|
|
|
|
\fBdevice scan\fR \fI[--all-devices|<device> [<device>...]\fR
|
|
If one or more devices are passed, these are scanned for a btrfs filesystem.
|
|
If no devices are passed, \fBbtrfs\fR scans all the block devices listed
|
|
in the /proc/partitions file.
|
|
Finally, if \fB--all-devices\fP is passed, all the devices under /dev are
|
|
scanned.
|
|
.TP
|
|
|
|
\fBreplace start\fR \fI[-Bfr] <srcdev>|<devid> <targetdev> <path>\fR
|
|
Replace device of a btrfs filesystem.
|
|
On a live filesystem, duplicate the data to the target device which
|
|
is currently stored on the source device. If the source device is not
|
|
available anymore, or if the \fB-r\fR option is set, the data is built
|
|
only using the RAID redundancy mechanisms. After completion of the
|
|
operation, the source device is removed from the filesystem.
|
|
If the \fIsrcdev\fR is a numerical value, it is assumed to be the device id
|
|
of the filesystem which is mounted at mount_point, otherwise is is
|
|
the path to the source device. If the source device is disconnected,
|
|
from the system, you have to use the \fIdevid\fR parameter format.
|
|
The targetdev needs to be same size or larger than the \fIsrcdev\fR.
|
|
|
|
.RS
|
|
\fIOptions\fR
|
|
.TP
|
|
.B -r
|
|
only read from \fIsrcdev\fR if no other zero-defect mirror exists (enable
|
|
this if your drive has lots of read errors, the access would be very slow)
|
|
.TP
|
|
.B -f
|
|
force using and overwriting \fItargetdev\fR even if it looks like
|
|
containing a valid btrfs filesystem. A valid filesystem is
|
|
assumed if a btrfs superblock is found which contains a
|
|
correct checksum. Devices which are currently mounted are
|
|
never allowed to be used as the \fItargetdev\fR
|
|
.TP
|
|
.B -B
|
|
do not background
|
|
.RE
|
|
.TP
|
|
|
|
\fBreplace status\fR \fI[-1] <path>\fR
|
|
Print status and progress information of a running device replace operation.
|
|
|
|
.RS
|
|
\fIOptions\fR
|
|
.TP
|
|
.B -1
|
|
print once instead of print continously until the replace
|
|
operation finishes (or is canceled)
|
|
.RE
|
|
.TP
|
|
|
|
\fBreplace cancel\fR \fI<path>\fR
|
|
Cancel a running device replace operation.
|
|
.TP
|
|
|
|
\fBscrub start\fP [-Bdqru] {\fI<path>\fP|\fI<device>\fP}
|
|
\fBscrub start\fP [-Bdqru] [-c ioprio_class -n ioprio_classdata] {\fI<path>\fP|\fI<device>\fP}
|
|
Start a scrub on all devices of the filesystem identified by \fI<path>\fR or on
|
|
a single \fI<device>\fR. Without options, scrub is started as a background
|
|
process. Progress can be obtained with the \fBscrub status\fR command. Scrubbing
|
|
involves reading all data from all disks and verifying checksums. Errors are
|
|
corrected along the way if possible.
|
|
.IP
|
|
The default IO priority of scrub is the idle class. The priority can be configured similar to the
|
|
.BR ionice (1)
|
|
syntax.
|
|
.RS
|
|
|
|
\fIOptions\fR
|
|
.IP -B 5
|
|
Do not background and print scrub statistics when finished.
|
|
.IP -d 5
|
|
Print separate statistics for each device of the filesystem (-B only).
|
|
.IP -q 5
|
|
Quiet. Omit error messages and statistics.
|
|
.IP -r 5
|
|
Read only mode. Do not attempt to correct anything.
|
|
.IP -u 5
|
|
Scrub unused space as well. (NOT IMPLEMENTED)
|
|
.IP -c 5
|
|
Set IO priority class (see
|
|
.BR ionice (1)
|
|
manpage).
|
|
.IP -n 5
|
|
Set IO priority classdata (see
|
|
.BR ionice (1)
|
|
manpage).
|
|
.RE
|
|
.TP
|
|
|
|
\fBscrub cancel\fP {\fI<path>\fP|\fI<device>\fP}
|
|
If a scrub is running on the filesystem identified by \fI<path>\fR, cancel it.
|
|
Progress is saved in the scrub progress file and scrubbing can be resumed later
|
|
using the \fBscrub resume\fR command.
|
|
If a \fI<device>\fR is given, the corresponding filesystem is found and
|
|
\fBscrub cancel\fP behaves as if it was called on that filesystem.
|
|
.TP
|
|
|
|
\fBscrub resume\fP [-Bdqru] [-c ioprio_class -n ioprio_classdata] {\fI<path>\fP|\fI<device>\fP}
|
|
Resume a canceled or interrupted scrub cycle on the filesystem identified by
|
|
\fI<path>\fR or on a given \fI<device>\fR. Does not start a new scrub if the
|
|
last scrub finished successfully.
|
|
.RS
|
|
|
|
\fIOptions\fR
|
|
.TP
|
|
see \fBscrub start\fP.
|
|
.RE
|
|
.TP
|
|
|
|
\fBscrub status\fP [-d] {\fI<path>\fP|\fI<device>\fP}
|
|
Show status of a running scrub for the filesystem identified by \fI<path>\fR or
|
|
for the specified \fI<device>\fR.
|
|
If no scrub is running, show statistics of the last finished or canceled scrub
|
|
for that filesystem or device.
|
|
.RS
|
|
|
|
\fIOptions\fR
|
|
.IP -d 5
|
|
Print separate statistics for each device of the filesystem.
|
|
.RE
|
|
.TP
|
|
|
|
\fBinspect-internal inode-resolve\fP [-v] \fI<inode>\fP \fI<path>\fP
|
|
Resolves an <inode> in subvolume <path> to all filesystem paths.
|
|
.RS
|
|
|
|
\fIOptions\fR
|
|
.IP -v 5
|
|
verbose mode. print count of returned paths and ioctl() return value
|
|
.RE
|
|
.TP
|
|
|
|
\fBinspect-internal logical-resolve\fP [-Pv] [-s bufsize] \fI<logical>\fP \fI<path>\fP
|
|
Resolves a <logical> address in the filesystem mounted at <path> to all inodes.
|
|
By default, each inode is then resolved to a file system path (similar to the
|
|
\fBinode-resolve\fP subcommand).
|
|
.RS
|
|
|
|
\fIOptions\fR
|
|
.IP -P 5
|
|
skip the path resolving and print the inodes instead
|
|
.IP -v 5
|
|
verbose mode. print count of returned paths and all ioctl() return values
|
|
.IP -s bufsize 5
|
|
set inode container's size. This is used to increase inode container's size in case it is
|
|
not enough to read all the resolved results. The max value one can set is 64k.
|
|
.RE
|
|
.TP
|
|
|
|
\fBinspect-internal subvolid-resolve\fP \fI<subvolid>\fP \fI<path>\fP
|
|
Get file system paths for the given subvolume ID.
|
|
.TP
|
|
|
|
\fBbtrfs qgroup assign\fP \fI<src>\fP \fI<dst>\fP \fI<path>\fP
|
|
Enable subvolume qgroup support for a filesystem.
|
|
.TP
|
|
|
|
\fBbtrfs qgroup remove\fP \fI<src>\fP \fI<dst>\fP \fI<path>\fP
|
|
Remove a subvol from a quota group.
|
|
.TP
|
|
|
|
\fBbtrfs qgroup create\fP \fI<qgroupid>\fP \fI<path>\fP
|
|
Create a subvolume quota group.
|
|
.TP
|
|
|
|
\fBbtrfs qgroup destroy\fP \fI<qgroupid>\fP \fI<path>\fP
|
|
Destroy a subvolume quota group.
|
|
.TP
|
|
|
|
\fBbtrfs qgroup show\fP \fI<path>\fP
|
|
Show all subvolume quota groups.
|
|
.TP
|
|
|
|
\fBbtrfs\fP \fBqgroup limit\fP [options] \fI<size>\fP|\fBnone\fP [\fI<qgroupid>\fP] \fI<path>\fP
|
|
Limit the size of a subvolume quota group.
|
|
.RE
|
|
|
|
.SH EXIT STATUS
|
|
\fBbtrfs\fR returns a zero exist status if it succeeds. Non zero is returned in
|
|
case of failure.
|
|
|
|
.SH AVAILABILITY
|
|
.B btrfs
|
|
is part of btrfs-progs. Btrfs filesystem is currently under heavy development,
|
|
and not suitable for any uses other than benchmarking and review.
|
|
Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for
|
|
further details.
|
|
.SH SEE ALSO
|
|
.BR mkfs.btrfs (8),
|
|
.BR ionice (1)
|