Commit Graph

68 Commits

Author SHA1 Message Date
Goffredo Baroncelli
0dbd99fb3e Scan the devices listed in /proc/partitions
During the commands:
	- btrfs filesystem show
	- btrfs device scan
the devices "scanned" are extracted from /proc/partitions. This
should avoid to scan devices not suitable for a btrfs filesystem like cdrom
and floppy or to scan not existant devices.
The old behavior (scan all the block devices under /dev) may be
forced passing the "--all-devices" switch.
2011-10-25 09:19:00 -04:00
Zhong, Xin
a70b0b2bba Btrfs-progs: add "btrfs subvolume get-default" subcommand
Add subcommand to get the default subvolume of btrfs filesystem

V2->V3:
* add man page
* based on http://git.darksatanic.net/repo/btrfs-progs-unstable.git
  integration-20110705

Reviewed-by: Andreas Philipp <philipp.andreas@gmail.com>
Reviewed-by: Goffredo Baroncelli <kreijack@libero.it>
Reported-by: Yang, Yi <yi.y.yang@intel.com>
Signed-off-by: Zhong, Xin <xin.zhong@intel.com>
2011-10-25 09:18:59 -04:00
Jan Schmidt
19011f9ab6 btrfs-progs: commands added
- scrub commands added
- open_file_or_dir no longer static (needed by scrub.c)

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
2011-10-25 09:18:59 -04:00
Andreas Philipp
97a3182fbf print parent ID in btrfs suvolume list
There was some discussion on "where" subvolumes live in. Why do we not
simply print the parent ID for each subvolume in btrfs subvolume list?
This patch adds this functionality when called with parameter "-p".

Signed-off-by: Andreas Philipp <philipp.andreas@gmail.com>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
2011-10-25 09:18:59 -04:00
Fajar A. Nugraha
baafb020b7 make "btrfs filesystem label" command actually work
This simple patch makes "btrfs filesystem label" command actually work.

On tmp branch, commit d1dc6a9, "btrfs filesystem label" functionality
was introduced. However the commit lacks one component that lets
"btrfs" accept "filesystem label" command.
Test case:

/dev/loop0

WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using

fs created label old on /dev/loop0
	nodesize 4096 leafsize 4096 sectorsize 4096 size 1.00GB
Btrfs Btrfs v0.19

old

new

FATAL: the filesystem has to be unmounted

new

Not sure if you need if you need a signoff for something as trivial as
this, but here it is just in case.

Signed-off-by: Fajar A. Nugraha <list@fajar.net>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
2011-10-25 09:18:58 -04:00
Stephane Chazelas
de07f367c4 incorrect argument checking for "btrfs sub snap -r"
Looks like this was missing in integration-20110626 for the
readonly snapshot patch:

Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
2011-10-25 09:18:58 -04:00
Andreas Philipp
681c1d64a9 Support the new parameters in do_clone(int argc, char** argv).
Now 'btrfs subvolume snapshot' takes not two but only at least two
parameters. Additionally, the help message is updated accordingly.

Signed-off-by: Andreas Philipp <philipp.andreas@gmail.com>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
2011-10-25 09:18:58 -04:00
Hubert Kario
29e6fc2aa6 add detailed help messages to btrfs command
extend the

        btrfs <cmd> --help

command to print detailed help message if available but fallback to
basic help message if detailed is unavailable

add detailed help message for 'filesystem defragment' command

little tweaks in comments

Signed-off-by: Hubert Kario <kario@wit.edu.pl>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
2011-10-25 09:18:32 -04:00
Hubert Kario
d388a77636 add advanced use of --help to help message
explain how to use

        btrfs <cmd> --help

command in help message

Signed-off-by: Hubert Kario <kario@wit.edu.pl>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
2011-10-25 09:18:32 -04:00
Goffredo Baroncelli
e8f47cf068 Add the "btrfs filesystem label" command
Hi all,

this patch adds the command "btrfs filesystem label" to change (or show) the
label of a filesystem.
This patch is a subset of the one written previously by Morey Roof. I
included the user space part only. So it is possible only to change/show a
label of a *single device* and *unounted* filesystem.

The reason of excluding the kernel space part, is to simplify the patch in
order to speed the check and then the merging of the patch itself. In fact I
have to point out that in the past there was almost three attempts to propose
this patch, without success neither complaints.

Chris, let me know how you want to proceed. I know that you are very busy,
and you prefer to work to stabilize btrfs instead adding new feature. But I
think that changing a label is a *essential* feature for a filesystem
managing tool. Think about a mount by LABEL.

To show a label

$ btrfs filesystem label <device>

To set a label

$ btrfs filesystem label <device> <newlabel>

Please guys, give a look to the source.
Comments are welcome.

You can pull the source from the branch "label" of the repository
http://cassiopea.homelinux.net/git/btrfs-progs-unstable.git

Regards
G.Baroncelli

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-10-25 09:18:31 -04:00
Goffredo Baroncelli
87d3875d4e Update/clean up btrfs help and man page V2
Hi all,

enclose you can find a patch which improves the help of the btrfs commands,
 updates the INSTALL file  and  the btrfs (command) man page.

Regarding the help of the btrfs command:
- moved the "subvolume set-default" command in the "subvolume" commands group
- removed a wrong new line
- small tweak on the basis of Andreas suggestion

Regarding the btrfs command man page:
- renaming the command "device balance" in "filesystem balance" (thanks to
Andreas Phillipp to highlight that)
- adding the entry "subvolume find-new"
- document the switches of the command "filesystem defrag"
- document the <devid> facility of the command "filesystem resize"
- small tweak on the basis of Andreas suggestion

Regarding the INSTALL file, which was very old, I removed the reference of the
old btrfsctl utility and changed the examples using the btrfs command.
I removed the old (and now wrong) statement about the inability to delete a
subvolume/snapshot

Chris, you can pull the patch from the branch "help_cleanup" of the following
repository.

http://cassiopea.homelinux.net/git/btrfs-progs-unstable.git

(or you can browse the changes at
http://cassiopea.homelinux.net/git/btrfs-progs-unstable.git/?p=btrfs-
progs-unstable-all.git;a=summary)

The patch is very simple: only updates the man page, the INSTALL file and
 moves/updates some lines in the help of btrfs command. Comments are welcome.

Regards
G.Baroncelli

 INSTALL        |   29 ++++++++++++++++++++---------
 btrfs.c        |   24 ++++++++++++------------
 man/btrfs.8.in |   45 +++++++++++++++++++++++++--------------------
 3 files changed, 57 insertions(+), 41 deletions(-)

 all the block devices.
 .TP
@@ -138,21 +143,21 @@ can expand the partition before enlarging the filesystem
and shrink the
 partition after reducing the size of the filesystem.
 .TP

-\fBfilesystem show\fR [<uuid>|<label>]\fR
-Show the btrfs filesystem with some additional info. If no UUID or label is
-passed, \fBbtrfs\fR show info of all the btrfs filesystem.
+\fBfilesystem show\fR [<device>|<uuid>|<label>]\fR
+Show the btrfs filesystem with some additional info. If no argument is
+passed, \fBbtrfs\fR shows info of all the btrfs filesystems.
 .TP

-\fBdevice balance\fR \fI<path>\fR
+\fBfilesystem balance\fR \fI<path>\fR
 Balance the chunks of the filesystem identified by \fI<path>\fR
 across the devices.
 .TP

-\fBdevice add\fR\fI <dev> [<dev>..] <path>\fR
+\fBdevice add\fR\fI <device> [<device>...] <path>\fR
 Add device(s) to the filesystem identified by \fI<path>\fR.
 .TP

-\fBdevice delete\fR\fI <dev> [<dev>..] <path>\fR
+\fBdevice delete\fR\fI <device> [<device>...] <path>\fR
 Remove device(s) from a filesystem identified by \fI<path>\fR.
 .PP

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-10-25 09:18:31 -04:00
Li Zefan
a418b24318 Update for lzo support
[Btrfs-Progs][V2] Update for lzo support

- Add incompat flag, otherwise btrfs-progs will report error
  when operating on btrfs filesystems mounted with lzo option.

- Update man page.

- Allow to turn on lzo compression for defrag operation:

  # btrfs filesystem defragment -c[zlib, lzo] <file>

  Note: "-c zlib" will fail, because that's how getopt() works
  for optional arguments.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-10-25 09:18:31 -04:00
Zhao Lei
6c94ed2479 fix a compile fail by strndup in RHEL5 env
When we compile btrfs-progs in RHEL5(with default gcc 4.1.2 and glibc-2.5-18),
we can get following error:

cc1: warnings being treated as errors
btrfs-list.c: In function 'ino_resolve':
btrfs-list.c:511: warning: implicit declaration of function 'strndup'
btrfs-list.c:511: warning: incompatible implicit declaration of built-in function 'strndup'
make: *** [btrfs-list.o] Error 1
...
cc1: warnings being treated as errors
btrfs.c: In function 'split_command':
btrfs.c:168: warning: implicit declaration of function 'strndup'
btrfs.c:168: warning: incompatible implicit declaration of built-in function 'strndup'
make: *** [btrfs-list.o] Error 1

We can add _GNU_SOURCE definition according man strndup.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
2010-09-23 20:26:49 -04:00
Chris Mason
8f55b769c7 Add btrfs subvol find-new command
btrfs-subvol find-new <subvol> <id> will search through a given subvol
and print out all the files with extents newer than a given id.

Care must be taken to make sure any pending delalloc is on disk before
running this because that won't show up in the output.
2010-03-18 12:32:32 -04:00
Josef Bacik
b72e4c4e19 Btrfs-progs: add btrfs filesystem df to print space info
This goes along with the new space info ioctl.  This will spit out the space
info all nice and pretty with the type, it's flags (DUP, RAID) and how much
space is in that group and how much is in use.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-14 08:34:38 -04:00
Goffredo Baroncelli
866539056a Correct the check of the argument number for the "btrfs dev add|rem" commands 2010-03-11 22:09:46 -05:00
Goffredo Baroncelli
7ebebb7bb1 Add the program name as the first parameter in the command of the btrfs tool
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-11 22:09:38 -05:00
ghigo
6d2cf04247 new util: 'btrfs'
This commit introduces a new command called 'btrfs' for managing
a btrfs filesystem. 'btrfs' handles:
- snapshot/subvolume creation
- adding/removal of volume (ie: disk)
- defragment of a tree
- scan of a device searching a btrfs filesystem
- re-balancing of the chunk on the disks
- listing subvolumes and snapshots

This has also been updated to include the new defrag range ioctl.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-11 13:45:47 -05:00