Btrfsck repair, strange df numbers and cannot write

Btrfsck repair, strange df numbers and cannot write

[Sem]

Hi,

After doing a btrfsck --repair on my file system, it now has very strange
numbers in df:

[root ~]# df -h | grep sdc
/dev/sdc         15T  -64Z   16E 101% /usr/data

Prior to this it was 81% used.

I can read the files, but i cannot write a file.

Does anyone have a clue as to what is going on?

Any idea how to fix?

Thanks.

---

Details:

[root ~]# uname -a
Linux t1.localdomain 3.6.6-1.fc16.x86_64 #1 SMP Mon Nov 5 16:56:43 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux

[root ~]# btrfs --version
Btrfs v0.20-rc1-37-g91d9eec

Re: Btrfsck repair, strange df numbers and cannot write

[Liu Bo]

On Mon, Nov 12, 2012 at 01:34:09PM +0000, Sem wrote:
> Hi,
> 
> After doing a btrfsck --repair on my file system, it now has very strange
> numbers in df:
> 
> [root ~]# df -h | grep sdc
> /dev/sdc         15T  -64Z   16E 101% /usr/data
> 
> Prior to this it was 81% used.
> 
> I can read the files, but i cannot write a file.
> 
> Does anyone have a clue as to what is going on?
> 

Can you show here what 'btrfs fi df /usr/data' prints?

And also 'btrfs-debug-tree sdc'.

thanks,
liubo

> Any idea how to fix?
> 
> Thanks.
> 
> ---
> 
> Details:
> 
> [root ~]# uname -a
> Linux t1.localdomain 3.6.6-1.fc16.x86_64 #1 SMP Mon Nov 5 16:56:43 UTC 2012
> x86_64 x86_64 x86_64 GNU/Linux
> 
> [root ~]# btrfs --version
> Btrfs v0.20-rc1-37-g91d9eec
> 
> 
> --
> 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

Re: Btrfsck repair, strange df numbers and cannot write

[Sem]

Liu Bo <bo.li.liu <at> oracle.com> writes:

> 
> On Mon, Nov 12, 2012 at 01:34:09PM +0000, Sem wrote:
> > Hi,
> > 
> > After doing a btrfsck --repair on my file system, it now has very strange
> > numbers in df:
> > 
> > [root ~]# df -h | grep sdc
> > /dev/sdc         15T  -64Z   16E 101% /usr/data
> > 
> > Prior to this it was 81% used.
> > 
> > I can read the files, but i cannot write a file.
> > 
> > Does anyone have a clue as to what is going on?
> > 
> 
> Can you show here what 'btrfs fi df /usr/data' prints?
> 
> And also 'btrfs-debug-tree sdc'.
> 
> thanks,
> liubo
> 
> > Any idea how to fix?
> > 
> > Thanks.
> > 
> > ---
> > 
> > Details:
> > 
> > [root ~]# uname -a
> > Linux t1.localdomain 3.6.6-1.fc16.x86_64 #1 SMP Mon Nov 5 16:56:43 UTC 2012
> > x86_64 x86_64 x86_64 GNU/Linux
> > 
> > [root ~]# btrfs --version
> > Btrfs v0.20-rc1-37-g91d9eec
> > 
> > 
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> > the body of a message to majordomo <at> vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> the body of a message to majordomo <at> vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 

[root@ data]# btrfs-debug-tree /dev/sdc

warning, bad space info total_bytes 8589934592 used 17179541504
warning, bad space info total_bytes 12884901888 used 25768099840
warning, bad space info total_bytes 17179869184 used 34358034432
warning, bad space info total_bytes 21474836480 used 42947969024
warning, bad space info total_bytes 25769803776 used 51537903616
warning, bad space info total_bytes 30064771072 used 60109676544
warning, bad space info total_bytes 34359738368 used 68699611136
warning, bad space info total_bytes 38654705664 used 77289545728
warning, bad space info total_bytes 42949672960 used 85810184192
warning, bad space info total_bytes 47244640256 used 94400118784
warning, bad space info total_bytes 51539607552 used 102990053376
warning, bad space info total_bytes 55834574848 used 111552487424
And thousands more lines.

[root@ data]# btrfs fi df /usr/data

Data, RAID0: total=13.95TB, used=23.99TB
System, RAID1: total=64.00MB, used=1.63MB
System: total=4.00MB, used=0.00
Metadata, RAID1: total=297.96GB, used=146.77GB

Re: Btrfsck repair, strange df numbers and cannot write

[jesper]

Sem <smith_it2000 <at> yahoo.com> writes:
> Liu Bo <bo.li.liu <at> oracle.com> writes:
> > > After doing a btrfsck --repair on my file system, it now has very strange
> > > numbers in df:
> > > 
> > > [root ~]# df -h | grep sdc
> > > /dev/sdc         15T  -64Z   16E 101% /usr/data
> > > 
> > > Prior to this it was 81% used.
> > > 
> > > I can read the files, but i cannot write a file.
> > > 
> > > Does anyone have a clue as to what is going on?
...
> [root <at>  data]# btrfs-debug-tree /dev/sdc
> 
> warning, bad space info total_bytes 8589934592 used 17179541504
> warning, bad space info total_bytes 12884901888 used 25768099840
...
> warning, bad space info total_bytes 51539607552 used 102990053376
> warning, bad space info total_bytes 55834574848 used 111552487424
> And thousands more lines.
> 
> [root <at>  data]# btrfs fi df /usr/data
> 
> Data, RAID0: total=13.95TB, used=23.99TB
> System, RAID1: total=64.00MB, used=1.63MB
> System: total=4.00MB, used=0.00
> Metadata, RAID1: total=297.96GB, used=146.77GB

Hello.

Did you find a solution for the issue below?
Cause i have run into the same problem.

I thought adding two disks to the array would help, but it only ended up as
showing up ad filled.

After doing another btrfsck i can not mount the volume at all.

Cheers
Jesper