[PATCH][btrfs progs] 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-all.git
(or you can browse the changes at
http://cassiopea.homelinux.net/git/btrfs-progs-unstable-all.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(-)
diff --git a/INSTALL b/INSTALL
index 16b45a5..3840148 100644
--- a/INSTALL
+++ b/INSTALL
@@ -22,23 +22,32 @@ in the e2fsprogs sources, and is usually available as
libuuid or
e2fsprogs-devel from various distros.
Building the utilities is just make ; make install. The programs go
-into /usr/local/bin. The commands available are:
+into /usr/local/bin. The mains commands available are:
mkfs.btrfs: create a filesystem
-btrfsctl: control program to create snapshots and subvolumes:
-
+btrfs: control program to create snapshots and subvolumes:
+ # mount a btrfs filesystem
mount /dev/sda2 /mnt
- btrfsctl -s new_subvol_name /mnt
- btrfsctl -s snapshot_of_default /mnt/default
- btrfsctl -s snapshot_of_new_subvol /mnt/new_subvol_name
- btrfsctl -s snapshot_of_a_snapshot /mnt/snapshot_of_new_subvol
+
+ # create a subvolume
+ btrfs subvolume create /mnt/new_subvol_name
+
+ # snapshot of a subvolume
+ btrfs subvolume snapshot /mnt/default /mnt/snapshot_of_default
+ btrfs subvolume snapshot /mnt/snapshot_of_default \
+ /mnt/snapshot_of_a_snapshot
+
+ # list of the subvolumes
ls /mnt
default snapshot_of_a_snapshot snapshot_of_new_subvol
new_subvol_name snapshot_of_default
- Snapshots and subvolumes cannot be deleted right now, but you can
- rm -rf all the files and directories inside them.
+ # removal of a subvolume or a snapshot
+ btrfs subvolume delete /mn/snapshot_of_a_snapshot
+
+ # look a the btrfs man page for further information
+ man btrfs
btrfsck: do a limited check of the FS extent trees./li
@@ -46,3 +55,5 @@ debug-tree: print all of the FS metadata in text form.
Example:
debug-tree /dev/sda2 big_output_file
+
+
diff --git a/btrfs.c b/btrfs.c
index 46314cf..8b3716a 100644
--- a/btrfs.c
+++ b/btrfs.c
@@ -61,6 +61,11 @@ static struct Command commands[] = {
{ do_subvol_list, 1, subvolume list, path\n
List the snapshot/subvolume of a filesystem.
},
+ { do_set_default_subvol, 2,
+ subvolume set-default, id path\n
+ Set the subvolume of the filesystem path which will be
mounted\n
+ as default.
+ },
{ do_find_newer, 2, subvolume find-new, path last_gen\n
List the recently modified files in a filesystem.
},
@@ -68,11 +73,6 @@ static struct Command commands[] = {
filesystem defragment, [-vcf] [-s start] [-l len] [-t size]
file|dir [file|dir...]\n
Defragment a file or a directory.
},
- { do_set_default_subvol, 2,
- subvolume set-default, id path\n
- Set the subvolume of the filesystem path which will be
mounted\n
- as default.
- },
{ do_fssync, 1,
filesystem sync, path\n
Force a sync on the filesystem path.
@@ -83,29 +83,29 @@ static struct Command commands[] = {
will occupe all available space on the device.
},
{ do_show_filesystem, 999,
- filesystem show, [uuid|label]\n
- Show the info of a btrfs filesystem. If no uuid or
label\n
+ filesystem show, [device|uuid|label]\n
+ Show the info of a btrfs filesystem. If no argument\n
Re: [PATCH][btrfs progs] Update/clean up btrfs help and man page
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi,
Today I pulled btrfs-progs-unstable from
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs-unstable.git
and I found the patch from below still not applied. Is there a reason
for this?
Regards,
Andreas Philipp
On 13.09.2010 21:23, Goffredo Baroncelli wrote:
Hi all,
enclose you can find a patch which improve the help of the btrfs
commands and its 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
Regarding the btrfs command man page: - renaming the command
device balance in filesystem balance (thanks to Andrea Phillipp
to highlight that) - adding the entry subvolume find-new
Chris, you can pull the patch from the branch help_cleanup of the
following repository.
http://cassiopea.homelinux.net/git/btrfs-progs-unstable-all.git
The patch is very simple: only update the man page and move some
lines in the help of btrfs command. Comments are welcome.
Regards G.Baroncelli
diff --git a/btrfs.c b/btrfs.c index ab5e57f..1816597 100644 ---
a/btrfs.c +++ b/btrfs.c @@ -61,6 +61,11 @@ static struct Command
commands[] = { { do_subvol_list, 1, subvolume list, path\n
List the snapshot/subvolume of a filesystem. }, + {
do_set_default_subvol, 2, + subvolume set-default, id
path\n + Set the subvolume of the filesystem path which will
be mounted\n + as default. + }, { do_find_newer, 2, subvolume
find-new, path last_gen\n List the recently modified files
in a filesystem. }, @@ -68,11 +73,6 @@ static struct Command
commands[] = { filesystem defragment, [-vcf] [-s start] [-l len]
[-t size] file|dir [file|dir...]\n Defragment a file or a
directory. }, - { do_set_default_subvol, 2, - subvolume
set-default, id path\n - Set the subvolume of the
filesystem path which will be mounted\n - as default. - }, {
do_fssync, 1, filesystem sync, path\n Force a sync on the
filesystem path. @@ -89,7 +89,7 @@ static struct Command
commands[] = { }, { do_df_filesystem, 1, filesystem df,
path\n - Show space usage information for a mount point\n. +
Show space usage information for a mount point. }, { do_balance,
1, filesystem balance, path\n diff --git a/man/btrfs.8.in
b/man/btrfs.8.in index 26ef982..249426c 100644 ---
a/man/btrfs.8.in +++ b/man/btrfs.8.in @@ -15,6 +15,10 @@ btrfs \-
control a btrfs filesystem .PP \fBbtrfs\fP \fBsubvolume
set-default\fP\fI id path\fP .PP +\fBbtrfs\fP \fBsubvolume
find-new\fP\fI subvolume last_gen\fP +.PP +\fBbtrfs\fP
\fBfilesystem balance\fP\fI path \fP +.PP \fBbtrfs\fP
\fBfilesystem defrag\fP\fI file|dir [file|dir...]\fP .PP
\fBbtrfs\fP \fBfilesystem sync\fP\fI path \fP @@ -25,8 +29,6 @@
btrfs \- control a btrfs filesystem .PP \fBbtrfs\fP \fBdevice
show\fP\fI dev|label [dev|label...]\fP .PP -\fBbtrfs\fP
\fBdevice balance\fP\fI path \fP -.PP \fBbtrfs\fP \fBdevice
add\fP\fI dev [dev..] path \fP .PP \fBbtrfs\fP \fBdevice
delete\fP\fI dev [dev..] path \fP] @@ -102,6 +104,10 @@ Set
the subvolume of the filesystem \fIpath\fR which is mounted as is
returned by the \fBsubvolume list\fR command. .TP
+\fBsubvolume find-new\fR\fI subvolume last_gen\fR +List the
recently modified files in a subvolume, after \fIlast_gen\fR ID.
+.TP + \fBfilesystem defragment\fP\fI file|dir
[file|dir...]\fR Defragment files and/or directories. .TP @@
-143,7 +149,7 @@ Show the btrfs filesystem with some additional
info. If no UUID or label is passed, \fBbtrfs\fR show info of all
the btrfs filesystem. .TP
-\fBdevice balance\fR \fIpath\fR +\fBfilesystem balance\fR
\fIpath\fR Balance the chunks of the filesystem identified by
\fIpath\fR across the devices. .TP
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Re: [PATCH][btrfs progs] Update/clean up btrfs help and man page
On 13.09.2010 21:23, Goffredo Baroncelli wrote: Hi all, enclose you can find a patch which improve the help of the btrfs commands and its 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 Regarding the btrfs command man page: - renaming the command device balance in filesystem balance (thanks to Andrea Phillipp to highlight that) - adding the entry subvolume find-new Could you also document the defragment switches? At the moment, they are only documented in the code, -c to compress, -f to force and -v for verbose (even if verbose does not add any output other than the version). -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH][btrfs progs] Update/clean up btrfs help and man page
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
Regarding the btrfs command man page:
- renaming the command device balance in filesystem balance (thanks to
Andrea 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
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-all.git
The patch is very simple: only updates the man page, the INSTALL file and
moves some lines in the qhelp of btrfs command. Comments are welcome.
Regards
G.Baroncelli
INSTALL| 31 ++-
btrfs.c| 17 +
man/btrfs.8.in | 36 +---
3 files changed, 60 insertions(+), 24 deletions(-)
diff --git a/INSTALL b/INSTALL
index 16b45a5..2c9cf1c 100644
--- a/INSTALL
+++ b/INSTALL
@@ -22,23 +22,34 @@ in the e2fsprogs sources, and is usually available as
libuuid or
e2fsprogs-devel from various distros.
Building the utilities is just make ; make install. The programs go
-into /usr/local/bin. The commands available are:
+into /usr/local/bin. The mains commands available are:
mkfs.btrfs: create a filesystem
-btrfsctl: control program to create snapshots and subvolumes:
-
+btrfs: control program to create snapshots and subvolumes:
+ # mount a btrfs filesystem
mount /dev/sda2 /mnt
- btrfsctl -s new_subvol_name /mnt
- btrfsctl -s snapshot_of_default /mnt/default
- btrfsctl -s snapshot_of_new_subvol /mnt/new_subvol_name
- btrfsctl -s snapshot_of_a_snapshot /mnt/snapshot_of_new_subvol
+
+ # create a subvolume
+ btrfs subvolume create /mnt/new_subvol_name
+
+ # snapshot of a subvolume
+ btrfs subvolume snapshot /mnt/default /mnt/snapshot_of_default
+ btrfs subvolume snapshot /mnt/new_subvol_name \
+ /mnt/snapshot_of_new_subvol
+ btrfs subvolume snapshot /mnt/snapshot_of_new_subvol \
+ /mnt/snapshot_of_a_snapshot
+
+ # list of the subvolumes
ls /mnt
default snapshot_of_a_snapshot snapshot_of_new_subvol
new_subvol_name snapshot_of_default
- Snapshots and subvolumes cannot be deleted right now, but you can
- rm -rf all the files and directories inside them.
+ # removal of a subvolume or a snapshot
+ btrfs subvolume delete /mn/snapshot_of_a_snapshot
+
+ # look a the btrfs man page for further information
+ man btrfs
btrfsck: do a limited check of the FS extent trees./li
@@ -46,3 +57,5 @@ debug-tree: print all of the FS metadata in text form.
Example:
debug-tree /dev/sda2 big_output_file
+
+
diff --git a/btrfs.c b/btrfs.c
index 46314cf..a607786 100644
--- a/btrfs.c
+++ b/btrfs.c
@@ -61,6 +61,11 @@ static struct Command commands[] = {
{ do_subvol_list, 1, subvolume list, path\n
List the snapshot/subvolume of a filesystem.
},
+ { do_set_default_subvol, 2,
+ subvolume set-default, id path\n
+ Set the subvolume of the filesystem path which will be
mounted\n
+ as default.
+ },
{ do_find_newer, 2, subvolume find-new, path last_gen\n
List the recently modified files in a filesystem.
},
@@ -68,19 +73,15 @@ static struct Command commands[] = {
filesystem defragment, [-vcf] [-s start] [-l len] [-t size]
file|dir [file|dir...]\n
Defragment a file or a directory.
},
- { do_set_default_subvol, 2,
- subvolume set-default, id path\n
- Set the subvolume of the filesystem path which will be
mounted\n
- as default.
- },
{ do_fssync, 1,
filesystem sync, path\n
Force a sync on the filesystem path.
},
{ do_resize, 2,
- filesystem resize, [+/-]newsize[gkm]|max filesystem\n
+ filesystem resize, [devid:][+/-]newsize[gkm]|max
filesystem\n
Resize the file system. If 'max' is passed, the filesystem\n
- will occupe all available space on the device.
+ will occupe all available space on the device. devid is\n
+ the id of the device which grown or will shrink.
},
{ do_show_filesystem, 999,
filesystem show, [uuid|label]\n
@@ -89,7 +90,7 @@ static
Re: [PATCH][btrfs progs] Update/clean up btrfs help and man page
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi all,
I tried the patch and found a few more things one might to
update/clean up.
Regarding the INSTALL file:
- - There are three example lines for snapshot creation while two can
show the same things.
Regarding the help of the btrfs command:
- - The line breaks in the source code for the help lines about the
btrfs scan command were different from all other commands.
- - The optional argument of the scan command was written in a strange
way.
- - Mixed usage of device and dev. I changed it to device.
- - The filesystem show command accepts also the argument type device.
- - Sometimes there were just two dots instead of three.
Regarding the btrfs command man page:
- - Changed the example for ambiguous commands since btrfs device show
no longer exists.
- - The optional argument of the scan command was written in a strange
way.
- - Mixed usage of device and dev. I changed it to device.
- - The filesystem show command accepts also the argument type device.
- - Sometimes there were just two dots instead of three.
- - In the summary, there was filesystem defrag instead of filesystem
defragment.
My patch applies on top of the changes from Goffredo Baroncelli.
Kind Regards,
Andreas Philipp
diff --git a/INSTALL b/INSTALL
index 2c9cf1c..3840148 100644
- --- a/INSTALL
+++ b/INSTALL
@@ -35,9 +35,7 @@ btrfs: control program to create snapshots and
subvolumes:
# snapshot of a subvolume
btrfs subvolume snapshot /mnt/default /mnt/snapshot_of_default
- -btrfs subvolume snapshot /mnt/new_subvol_name \
- -/mnt/snapshot_of_new_subvol
- -btrfs subvolume snapshot /mnt/snapshot_of_new_subvol \
+btrfs subvolume snapshot /mnt/snapshot_of_default \
/mnt/snapshot_of_a_snapshot
# list of the subvolumes
diff --git a/btrfs.c b/btrfs.c
index a607786..1b1adb7 100644
- --- a/btrfs.c
+++ b/btrfs.c
@@ -84,7 +84,7 @@ static struct Command commands[] = {
the id of the device which grown or will shrink.
},
{ do_show_filesystem, 999,
- - filesystem show, [uuid|label]\n
+ filesystem show, [device|uuid|label]\n
Show the info of a btrfs filesystem. If no uuid or label\n
is passed, info of all the btrfs filesystem are shown.
},
@@ -96,17 +96,17 @@ static struct Command commands[] = {
filesystem balance, path\n
Balance the chunks across the device.
},
- -{ do_scan,
- - 999, device scan, [device [device..]\n
+{ do_scan, 999,
+ device scan, [device...]\n
Scan all device for or the passed device for a btrfs\n
filesystem.
},
{ do_add_volume, -2,
- - device add, dev [dev..] path\n
+ device add, device [device...] path\n
Add a device to a filesystem.
},
{ do_remove_volume, -2,
- - device delete, dev [dev..] path\n
+ device delete, device [device...] path\n
Remove a device from a filesystem.
},
/* coming soon
diff --git a/man/btrfs.8.in b/man/btrfs.8.in
index 1997aa8..6caee8b 100644
- --- a/man/btrfs.8.in
+++ b/man/btrfs.8.in
@@ -19,19 +19,19 @@ btrfs \- control a btrfs filesystem
.PP
\fBbtrfs\fP \fBfilesystem balance\fP\fI path \fP
.PP
- -\fBbtrfs\fP \fBfilesystem defrag\fP\fI [-vcf] [-s start] [-l len] [-t
size] file|dir [file|dir...]\fP
+\fBbtrfs\fP \fBfilesystem defragment\fP\fI [-vcf] [-s start] [-l len]
[-t size] file|dir [file|dir...]\fP
.PP
\fBbtrfs\fP \fBfilesystem sync\fP\fI path \fP
.PP
\fBbtrfs\fP \fBfilesystem resize\fP\fI
[devid:][+/\-]size[gkm]|max filesystem\fP
.PP
- -\fBbtrfs\fP \fBdevice scan\fP\fI [device [device..]]\fP
+\fBbtrfs\fP \fBdevice scan\fP\fI [device...]\fP
.PP
- -\fBbtrfs\fP \fBdevice show\fP\fI dev|label [dev|label...]\fP
+\fBbtrfs\fP \fBdevice show\fP\fI [device|uuid|label]\fP
.PP
- -\fBbtrfs\fP \fBdevice add\fP\fI dev [dev..] path \fP
+\fBbtrfs\fP \fBdevice add\fP\fI device [device...] path \fP
.PP
- -\fBbtrfs\fP \fBdevice delete\fP\fI dev [dev..] path \fP]
+\fBbtrfs\fP \fBdevice delete\fP\fI [device...] path \fP]
.PP
\fBbtrfs\fP \fBhelp|\-\-help|\-h \fP\fI\fP
@@ -49,11 +49,11 @@ For example: it is possible to run
instead of
.I btrfs subvolume snapshot.
But
- -.I btrfs dev s
+.I btrfs dev a
is not allowed, because
- -.I dev s
+.I dev a
may be interpreted both as
- -.I device show
+.I device add
and as
.I device scan.
In this case
@@ -119,7 +119,7 @@ If the switch \fB-t\fR is passed, any extent
bigger than \fBsize\fR is
considered already defragged.
.TP
- -\fBdevice scan\fR \fI[device [device..]]\fR
+\fBdevice scan\fR \fI[device...]\fR
Scan devices for a btrfs filesystem. If no devices are passed,
\fBbtrfs\fR scans
all the block devices.
.TP
@@ -154,9 +154,9 @@ partition after reducing the size of the filesystem.
To know the ID of a device use the command \fBbtrfs filesystem show\fR.
.TP
- -\fBfilesystem show\fR [uuid|label]\fR
+\fBfilesystem show\fR [device|uuid|label]\fR
Show the btrfs filesystem with some
[PATCH][btrfs progs] Update/clean up btrfs help and man page
Hi all,
enclose you can find a patch which improve the help of the btrfs commands and
its 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
Regarding the btrfs command man page:
- renaming the command device balance in filesystem balance (thanks to
Andrea Phillipp to highlight that)
- adding the entry subvolume find-new
Chris, you can pull the patch from the branch help_cleanup of the following
repository.
http://cassiopea.homelinux.net/git/btrfs-progs-unstable-all.git
The patch is very simple: only update the man page and move some lines in the
help of btrfs command. Comments are welcome.
Regards
G.Baroncelli
diff --git a/btrfs.c b/btrfs.c
index ab5e57f..1816597 100644
--- a/btrfs.c
+++ b/btrfs.c
@@ -61,6 +61,11 @@ static struct Command commands[] = {
{ do_subvol_list, 1, subvolume list, path\n
List the snapshot/subvolume of a filesystem.
},
+ { do_set_default_subvol, 2,
+ subvolume set-default, id path\n
+ Set the subvolume of the filesystem path which will be
mounted\n
+ as default.
+ },
{ do_find_newer, 2, subvolume find-new, path last_gen\n
List the recently modified files in a filesystem.
},
@@ -68,11 +73,6 @@ static struct Command commands[] = {
filesystem defragment, [-vcf] [-s start] [-l len] [-t size]
file|dir [file|dir...]\n
Defragment a file or a directory.
},
- { do_set_default_subvol, 2,
- subvolume set-default, id path\n
- Set the subvolume of the filesystem path which will be
mounted\n
- as default.
- },
{ do_fssync, 1,
filesystem sync, path\n
Force a sync on the filesystem path.
@@ -89,7 +89,7 @@ static struct Command commands[] = {
},
{ do_df_filesystem, 1,
filesystem df, path\n
- Show space usage information for a mount point\n.
+ Show space usage information for a mount point.
},
{ do_balance, 1,
filesystem balance, path\n
diff --git a/man/btrfs.8.in b/man/btrfs.8.in
index 26ef982..249426c 100644
--- a/man/btrfs.8.in
+++ b/man/btrfs.8.in
@@ -15,6 +15,10 @@ btrfs \- control a btrfs filesystem
.PP
\fBbtrfs\fP \fBsubvolume set-default\fP\fI id path\fP
.PP
+\fBbtrfs\fP \fBsubvolume find-new\fP\fI subvolume last_gen\fP
+.PP
+\fBbtrfs\fP \fBfilesystem balance\fP\fI path \fP
+.PP
\fBbtrfs\fP \fBfilesystem defrag\fP\fI file|dir [file|dir...]\fP
.PP
\fBbtrfs\fP \fBfilesystem sync\fP\fI path \fP
@@ -25,8 +29,6 @@ btrfs \- control a btrfs filesystem
.PP
\fBbtrfs\fP \fBdevice show\fP\fI dev|label [dev|label...]\fP
.PP
-\fBbtrfs\fP \fBdevice balance\fP\fI path \fP
-.PP
\fBbtrfs\fP \fBdevice add\fP\fI dev [dev..] path \fP
.PP
\fBbtrfs\fP \fBdevice delete\fP\fI dev [dev..] path \fP]
@@ -102,6 +104,10 @@ Set the subvolume of the filesystem \fIpath\fR which
is mounted as
is returned by the \fBsubvolume list\fR command.
.TP
+\fBsubvolume find-new\fR\fI subvolume last_gen\fR
+List the recently modified files in a subvolume, after \fIlast_gen\fR ID.
+.TP
+
\fBfilesystem defragment\fP\fI file|dir [file|dir...]\fR
Defragment files and/or directories.
.TP
@@ -143,7 +149,7 @@ Show the btrfs filesystem with some additional info. If
no UUID or label is
passed, \fBbtrfs\fR show info of all the btrfs filesystem.
.TP
-\fBdevice balance\fR \fIpath\fR
+\fBfilesystem balance\fR \fIpath\fR
Balance the chunks of the filesystem identified by \fIpath\fR
across the devices.
.TP
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