no space left on device - critical issue

DISCUSSION Robert G. 1 participant 1 message Aug 15, 2010 Btrfs file system

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Robert G.

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2010-08-15 13:05 UTC #0 lore raw

Hi Guys,
I've noticed the same issue.
Just look at the mail history.
I think it might be a critical problem.
Regards
Robert

Pocz=C4=85tek przekazywanej wiadomo=C5=9Bci:

Data: Sun, 15 Aug 2010 09:15:16 +0200
Od: Lubos Kolouch <[email protected]>
Do: "Robert G." <[email protected]>
Temat: Re: no space left on device - critical issue

I think you sent it just to me and not to the list ;)

Lubos

Quoted 24 lines · Robert G.

Hi guys,
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I have exactly the same situation.
I use 2.6.35 kernel and btrfs-tools 0.19+201006 (from debian testing distro). System says there is no space on /home partition even though it's plenty of it.
I have ssd disk and mount filesystem with ssd option.
It's rather critical issue.
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root@leni:~# btrfs filesystem show
failed to read /dev/sr0
Label: 'root'  uuid: a4e12457-f608-47f1-a9b2-ac68dbc3f5cc
	Total devices 1 FS bytes used 9.47GB
	devid    1 size 29.30GB used 29.30GB path /dev/sda5
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Label: 'tmp'  uuid: 718bbcc2-1087-4f41-a90a-287a015eca02
	Total devices 1 FS bytes used 1.77MB
	devid    1 size 10.00GB used 9.03GB path /dev/sda6
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Label: 'home'  uuid: f714cbe0-c952-4821-a3b7-db3be5daa99f
	Total devices 1 FS bytes used 33.95GB
	devid    1 size 48.30GB used 48.30GB path /dev/sda8
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Btrfs Btrfs v0.19

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root@leni:~# btrfs filesystem df /home
Data: total=3D33.77GB, used=3D33.71GB
Metadata: total=3D7.26GB, used=3D242.59MB
System: total=3D12.00MB, used=3D12.00KB
root@leni:~#=20
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root@leni:~# df -h
System plik=C3=B3w         rozm. u=C5=BCyte dost. %u=C5=BC. zamont. n=

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/dev/sda5 30G 11G 20G 35% /

tmpfs                 2,0G     0  2,0G   0% /lib/init/rw
udev                   10M  264K  9,8M   3% /dev
tmpfs                 2,0G     0  2,0G   0% /dev/shm
/dev/sda3             258M   57M  188M  24% /boot
/dev/sda8              49G   35G   15G  71% /home
/dev/sda6              10G  1,9M   10G   1% /tmp
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root@leni:~# mount | grep btrfs
/dev/sda5 on / type btrfs (rw,ssd)
/dev/sda8 on /home type btrfs (rw,ssd)
/dev/sda6 on /tmp type btrfs (rw,ssd)
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Quoted 49 lines

Regards
Robert
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Dnia 2010-08-14, o godz. 20:15:49
Lubos Kolouch <[email protected]> napisa=C5=82(a):
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Quoted 41 lines
I have another example with 2.6.35-r1 and latest btrfs-progs =20
# btrfs filesystem show
Label: none  uuid: 46c7a8b4-ca13-4b4f-a695-6a0e31112411
	Total devices 2 FS bytes used 1.23TB
	devid    1 size 896.39GB used 896.39GB path /dev/dm-0
	devid    2 size 896.39GB used 896.25GB path /dev/dm-1
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# btrfs filesystem df /home
Data: total=3D1.74TB, used=3D1.23TB
Metadata: total=3D3.01GB, used=3D2.18GB
System: total=3D12.00MB, used=3D200.00KB
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So there should be plenty of space left, but I am getting messages
that the device is out of free space.
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Anything I can try to debug this?
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Thank you
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Lubos
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Lubos Kolouch, Fri, 30 Jul 2010 15:09:59 +0000:
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Quoted 16 lines
correction - btrfs-cache processes
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Lubos Kolouch, Fri, 30 Jul 2010 15:02:18 +0000:
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Quoted 12 lines
With 2.6.34 it basically "works", but time to time the load goes up to 50 and lot of btrfs-cleaner processess are spawned... the system is responsive though, except for the filesystem... after an hour or so the processes finish and the load goes back to normal
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Lubos
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Quoted 2 lines · Leonidas Spyropoulos
I use the latest btrfs-tools and 2.6.34-020634-generic kernel for lucid. Got no issues like that, is it happening with 2.6.3=

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kernel as well?
Quoted 6 lines · Lubos Kolouch
Yes, I pulled today's btrfs-progs.
Lubos
On P=C3=A1, =C4=8Dec 30, 2010, 13:03:10, Leonidas Spyropoulos=

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Have you updated with latest btrfs-tools?
Quoted 15 lines · Lubos Kolouch
Hello,
kerner 2.6.35-rc6
btrfs filesystem df /home
Data: total=3D1.68TB, used=3D987.62GB
Metadata: total=3D56.01GB, used=3D48.16GB System:
total=3D12.00MB, used=3D200.00KB
touch: cannot touch `/home/x': No space left on device
Any ideas what I should do?
Thank you

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Lubos
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