Btrfs devel - Feb 2010 - Re: [PATCH 0/3 V3] btrfs: a new tool to manage a btrfs filesystem

On Sun, Feb 21, 2010 at 8:40 AM, Goffredo Baroncelli <kreijack@gmail.com>
wrote:
>       filesystem resize [+/-]<size>[gkm]|max <filesystem>
-filesystem resize [+/-]<size>[gkm]|max <filesystem>
+filesystem resize [+/-]<size>[gkm]|max <dev>

This command works on devices, not paths.
>              Resize a filesystem identified by <path>.  The
<size> parame‐
-Resize a filesystem identified by <path>.  The <size> parame‐
+Resize a filesystem identified by <dev>.  The <size> parame‐
>              ter  specifies the new size of the filesystem.  If the prefix
>              + or - is present the size is increased or decreased  by  the
>              quantity  <size>.  If no units are specified, the unit
of the
>              <size> parameter defaults  to  bytes.  Optionally,  the
 size
>              parameter  may  be suffixed by one of the following the units
>              designators: ''K'', ''M'', or
''G'', kilobytes, megabytes, or giga‐
>              bytes, respectively.
>
>              If  ''max'' is passed, the filesystem will
occupy all available
>              space on the volume(s).
>
>              The resize command does not manipulate the size of underlying
>              partitions.   If you wish to enlarge/reduce a filesystem, you
-partitions.   If you wish to enlarge/reduce a filesystem, you
+partition.   If you wish to enlarge/reduce a filesystem, you
>              must make sure you can expand/reduce the size of  the  parti‐
>              tion also.
-must make sure you can expand/reduce the size of  the  parti‐
-tion also.
+must make sure you can expand the partition before enlarging
+the filesystem and shrink the partition after reducing the size
+of the filesystem.
>
>
>       filesystem show [<uuid>|<label>]
>              Show  the  btrfs  filesystem with some additional info. If no
>              UUID or label is passed, btrfs show info  of  all  the  btrfs
>              filesystem.
>
>
>       device balance|-b <path>
-device balance|-b <path>
+device balance <path>

Mike
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On Monday 22 February 2010, Mike Fedyk wrote:
> On Sun, Feb 21, 2010 at 8:40 AM, Goffredo Baroncelli
<kreijack@gmail.com>
wrote:
> >       filesystem resize [+/-]<size>[gkm]|max <filesystem>
> 
> -filesystem resize [+/-]<size>[gkm]|max <filesystem>
> +filesystem resize [+/-]<size>[gkm]|max <dev>
> 
> This command works on devices, not paths.
Are you sure ? To me it results (test and code inspection) to work on path.
> 
> >              Resize a filesystem identified by <path>.  The
<size> parame‐
> 
> -Resize a filesystem identified by <path>.  The <size> parame‐
> +Resize a filesystem identified by <dev>.  The <size> parame‐
> 
> >              ter  specifies the new size of the filesystem.  If the
prefix
> >              + or - is present the size is increased or decreased  by 
the
> >              quantity  <size>.  If no units are specified, the
unit of the
> >              <size> parameter defaults  to  bytes.  Optionally, 
the  size
> >              parameter  may  be suffixed by one of the following the
units
> >              designators: ''K'',
''M'', or ''G'', kilobytes, megabytes, or giga‐
> >              bytes, respectively.
> >
> >              If  ''max'' is passed, the filesystem
will occupy all available
> >              space on the volume(s).
> >
> >              The resize command does not manipulate the size of
underlying
> >              partitions.   If you wish to enlarge/reduce a filesystem,
you
> 
> -partitions.   If you wish to enlarge/reduce a filesystem, you
> +partition.   If you wish to enlarge/reduce a filesystem, you
ok
> >              must make sure you can expand/reduce the size of  the 
parti‐
> >              tion also.
> 
> -must make sure you can expand/reduce the size of  the  parti‐
> -tion also.
> +must make sure you can expand the partition before enlarging
> +the filesystem and shrink the partition after reducing the size
> +of the filesystem.
ok
> >
> >
> >       filesystem show [<uuid>|<label>]
> >              Show  the  btrfs  filesystem with some additional info.
If no
> >              UUID or label is passed, btrfs show info  of  all  the 
btrfs
> >              filesystem.
> >
> >
> >       device balance|-b <path>
> 
> -device balance|-b <path>
> +device balance <path>
ok
> Mike
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> To unsubscribe from this list: send the line "unsubscribe
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> 
I will update my repo

BR
Goffredo
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Key fingerprint = 4769 7E51 5293 D36C 814E  C054 BF04 F161 3DC5 0512
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On Mon, Feb 22, 2010 at 07:47:40PM +0100, Goffredo Baroncelli
wrote:
> On Monday 22 February 2010, Mike Fedyk wrote:
> > On Sun, Feb 21, 2010 at 8:40 AM, Goffredo Baroncelli
<kreijack@gmail.com>
> wrote:
> > >       filesystem resize [+/-]<size>[gkm]|max
<filesystem>
> > 
> > -filesystem resize [+/-]<size>[gkm]|max <filesystem>
> > +filesystem resize [+/-]<size>[gkm]|max <dev>
> > 
> > This command works on devices, not paths.
> 
> Are you sure ? To me it results (test and code inspection) to work on path.
The ioctl takes a path so that it knows which btrfs filesystem to
change.
> 
> > 
> > >              Resize a filesystem identified by <path>.  The
<size> parame‐
> > 
> > -Resize a filesystem identified by <path>.  The <size>
parame‐
> > +Resize a filesystem identified by <dev>.  The <size>
parame‐
> > 
> > >              ter  specifies the new size of the filesystem.  If
the prefix
> > >              + or - is present the size is increased or decreased
by  the
> > >              quantity  <size>.  If no units are specified,
the unit of the
> > >              <size> parameter defaults  to  bytes. 
Optionally,  the  size
> > >              parameter  may  be suffixed by one of the following
the units
> > >              designators: ''K'',
''M'', or ''G'', kilobytes, megabytes, or giga‐
> > >              bytes, respectively.
> > >
> > >              If  ''max'' is passed, the
filesystem will occupy all available
> > >              space on the volume(s).
> > >
> > >              The resize command does not manipulate the size of
underlying
> > >              partitions.   If you wish to enlarge/reduce a
filesystem, you
> > 
> > -partitions.   If you wish to enlarge/reduce a filesystem, you
> > +partition.   If you wish to enlarge/reduce a filesystem, you
> ok
> 
> > >              must make sure you can expand/reduce the size of 
the  parti‐
> > >              tion also.
> > 
> > -must make sure you can expand/reduce the size of  the  parti‐
> > -tion also.
> > +must make sure you can expand the partition before enlarging
> > +the filesystem and shrink the partition after reducing the size
> > +of the filesystem.
> ok
> 
> > >
> > >
> > >       filesystem show [<uuid>|<label>]
> > >              Show  the  btrfs  filesystem with some additional
info. If no
> > >              UUID or label is passed, btrfs show info  of  all 
the  btrfs
> > >              filesystem.
> > >
> > >
> > >       device balance|-b <path>
> > 
> > -device balance|-b <path>
> > +device balance <path>
> 
> ok
> 
> > Mike
> > --
> > To unsubscribe from this list: send the line "unsubscribe
linux-btrfs" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > 
> 
> I will update my repo
Thanks!

-chris

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On Wed, Feb 24, 2010 at 3:35 PM, Chris Mason <chris.mason@oracle.com>
wrote:
> On Mon, Feb 22, 2010 at 07:47:40PM +0100, Goffredo Baroncelli wrote:
>> On Monday 22 February 2010, Mike Fedyk wrote:
>> > On Sun, Feb 21, 2010 at 8:40 AM, Goffredo Baroncelli
<kreijack@gmail.com>
>> wrote:
>> > >       filesystem resize [+/-]<size>[gkm]|max
<filesystem>
>> >
>> > -filesystem resize [+/-]<size>[gkm]|max <filesystem>
>> > +filesystem resize [+/-]<size>[gkm]|max <dev>
>> >
>> > This command works on devices, not paths.
>>
>> Are you sure ? To me it results (test and code inspection) to work on
path.
>
> The ioctl takes a path so that it knows which btrfs filesystem to
> change.
>
Then how does it know which device to shrink in a multi-device filesystem?
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