cannot remove files: No space left on device

cannot remove files: No space left on device

[Tomasz Chmielewski]

I'm trying to remove some files on a btrfs filesystem which has 26 GB free:

/dev/sdb4             336G  310G   26G  93% /mnt/btrfs


Unfortunately, removing some of the files fails, due to "No space left on device":

root@dom:/mnt/btrfs# rm -rfv postgresql-noindex
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16508.6'
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16508.7'
rm: cannot remove `postgresql-noindex/postgresql/8.4/main/base/16384/16508.8': No space left on device
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16508.9'
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16508_fsm'
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16511'
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16513'
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16516'
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16516_fsm'
removed `postgresql-noindex/postgresql/8.4/main/base/16384/16521'

This is a snapshot of a different directory (with some changes).

Is it expected? I'm running 2.6.39.1 kernel.

-- 
Tomasz Chmielewski
http://wpkg.org

Re: cannot remove files: No space left on device

[Mike Fleetwood]

On 12 June 2011 00:32, Tomasz Chmielewski <mangoo@wpkg.org> wrote:
> I'm trying to remove some files on a btrfs filesystem which has 26 GB=
 free:
>
> /dev/sdb4 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 336G =C2=A0310G =C2=
=A0 26G =C2=A093% /mnt/btrfs
>
>
> Unfortunately, removing some of the files fails, due to "No space lef=
t on device":
>
> root@dom:/mnt/btrfs# rm -rfv postgresql-noindex
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16508.6'
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16508.7'
> rm: cannot remove `postgresql-noindex/postgresql/8.4/main/base/16384/=
16508.8': No space left on device
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16508.9'
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16508_fsm'
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16511'
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16513'
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16516'
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16516_fsm'
> removed `postgresql-noindex/postgresql/8.4/main/base/16384/16521'
>
> This is a snapshot of a different directory (with some changes).
>
> Is it expected? I'm running 2.6.39.1 kernel.
>
> --
> Tomasz Chmielewski

Check out the btrfs FAQ about space usage:
 https://btrfs.wiki.kernel.org/index.php/FAQ#Why_are_there_so_many_ways=
_to_check_the_amount_of_free_space.3F

and try these command too:
 btrfs filesystem df /mnt/btrfs
 btrfs filesystem show /dev/sdb4

I'm no btrfs expert but it's worth trying to delete one file and
syncing the fs, then repeating.


Mike
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Re: cannot remove files: No space left on device

[Tomasz Chmielewski]

On 12.06.2011 10:27, Mike Fleetwood wrote:

> Check out the btrfs FAQ about space usage:
>    https://btrfs.wiki.kernel.org/index.php/FAQ#Why_are_there_so_many_ways_to_check_the_amount_of_free_space.3F
>
> and try these command too:
>   btrfs filesystem df /mnt/btrfs
>   btrfs filesystem show /dev/sdb4
>
> I'm no btrfs expert but it's worth trying to delete one file and
> syncing the fs, then repeating.

Yes, I know this FAQ.

I've deleted around 40 GB files, but still occasionally see "No space 
left on device" when removing files, or when copying new files to btrfs 
filesystem (i.e. copying one file fails with "No space left on the 
device", while there is ~70 GB free on btrfs filesystem; and copying 
some other files, with similar or bigger size, succeeds).


-- 
Tomasz Chmielewski
http://wpkg.org