From: Zoiled <zoiled@online.no>
To: Marco Lorenzo Crociani <marcoc@prismatelecomtesting.com>,
linux-btrfs@vger.kernel.org
Subject: Re: btrfs filesystem usage - Wrong Unallocated indications - RAID10
Date: Mon, 23 May 2016 20:49:04 +0200 [thread overview]
Message-ID: <574350A0.80101@online.no> (raw)
In-Reply-To: <574306CC.3070906@prismatelecomtesting.com>
Marco Lorenzo Crociani wrote:
> Hi,
> as I wrote today in IRCI experienced an issue with 'btrfs filesystem
> usage'.
> I have a 4 partitions RAID10 btrfs filesystem almost full.
> 'btrfs filesystem usage' reports wrong "Unallocated" indications.
>
> Linux 4.5.3
> btrfs-progs v4.5.3
>
>
> # btrfs fi usage /data/
>
> Overall:
> Device size: 13.93TiB
> Device allocated: 13.77TiB
> Device unallocated: 167.54GiB
> Device missing: 0.00B
> Used: 13.44TiB
> Free (estimated): 244.39GiB (min: 244.39GiB)
> Data ratio: 2.00
> Metadata ratio: 2.00
> Global reserve: 512.00MiB (used: 0.00B)
>
> Data,single: Size:8.00MiB, Used:0.00B
> /dev/sda4 8.00MiB
>
> Data,RAID10: Size:6.87TiB, Used:6.71TiB
> /dev/sda4 1.72TiB
> /dev/sdb3 1.72TiB
> /dev/sdc3 1.72TiB
> /dev/sdd3 1.72TiB
>
> Metadata,single: Size:8.00MiB, Used:0.00B
> /dev/sda4 8.00MiB
>
> Metadata,RAID10: Size:19.00GiB, Used:14.15GiB
> /dev/sda4 4.75GiB
> /dev/sdb3 4.75GiB
> /dev/sdc3 4.75GiB
> /dev/sdd3 4.75GiB
>
> System,single: Size:4.00MiB, Used:0.00B
> /dev/sda4 4.00MiB
>
> System,RAID10: Size:16.00MiB, Used:768.00KiB
> /dev/sda4 4.00MiB
> /dev/sdb3 4.00MiB
> /dev/sdc3 4.00MiB
> /dev/sdd3 4.00MiB
>
> Unallocated:
> /dev/sda4 1.76TiB
> /dev/sdb3 1.76TiB
> /dev/sdc3 1.76TiB
> /dev/sdd3 1.76TiB
>
> ----------------------------------------------------------------------------------
>
> # btrfs fi show /data/
> Label: 'data' uuid: df6639d5-3ef2-4ff6-a871-9ede440e2dae
> Total devices 4 FS bytes used 6.72TiB
> devid 1 size 3.48TiB used 3.44TiB path /dev/sda4
> devid 2 size 3.48TiB used 3.44TiB path /dev/sdb3
> devid 3 size 3.48TiB used 3.44TiB path /dev/sdc3
> devid 4 size 3.48TiB used 3.44TiB path /dev/sdd3
>
> ----------------------------------------------------------------------------------
>
> # btrfs fi df /data/
> Data, RAID10: total=6.87TiB, used=6.71TiB
> Data, single: total=8.00MiB, used=0.00B
> System, RAID10: total=16.00MiB, used=768.00KiB
> System, single: total=4.00MiB, used=0.00B
> Metadata, RAID10: total=19.00GiB, used=14.15GiB
> Metadata, single: total=8.00MiB, used=0.00B
> GlobalReserve, single: total=512.00MiB, used=0.00B
>
> ----------------------------------------------------------------------------------
>
> # df -h
> /dev/sda4 7,0T 6,8T 245G 97% /data
>
> Regards,
>
For what it's worth... I have a 8 disk (7x 300GB + 1x 500GB) data
raid10, metadata raid1 setup and I get the following output of btrfs...
Label: 'xxyyzz' uuid: 12345678-9abc-def1-2345-6789abcdef01
Total devices 8 FS bytes used 1.05TiB
devid 1 size 268.05GiB used 265.94GiB path /dev/sda1
devid 2 size 279.40GiB used 277.22GiB path /dev/sdb
devid 3 size 279.40GiB used 277.32GiB path /dev/sdc
devid 4 size 279.40GiB used 278.73GiB path /dev/sdd
devid 5 size 279.40GiB used 277.72GiB path /dev/sde
devid 6 size 279.40GiB used 278.61GiB path /dev/sdf
devid 7 size 279.40GiB used 278.82GiB path /dev/sdg
devid 8 size 465.76GiB used 230.99GiB path /dev/sdh
# btrfs filesystem usage -T /
Overall:
Device size: 2.35TiB
Device allocated: 2.11TiB
Device unallocated: 244.83GiB
Device missing: 0.00B
Used: 2.11TiB
Free (estimated): 122.57GiB (min: 122.57GiB)
Data ratio: 2.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Data Data Metadata System
Id Path RAID1 RAID10 RAID1 RAID1 Unallocated
-- --------- ---------- --------- -------- --------- -----------
1 /dev/sda1 - 132.97GiB - - 135.08GiB
2 /dev/sdb - 138.61GiB - - 140.79GiB
3 /dev/sdc - 138.66GiB - - 140.74GiB
4 /dev/sdd - 138.87GiB 1.00GiB - 139.53GiB
5 /dev/sde 1.00GiB 137.86GiB 1.00GiB - 139.53GiB
6 /dev/sdf - 138.81GiB 1.00GiB - 139.59GiB
7 /dev/sdg 1.00GiB 138.38GiB 1.00GiB 64.00MiB 138.96GiB
8 /dev/sdh - 113.46GiB 4.00GiB 64.00MiB 348.24GiB
-- --------- ---------- --------- -------- --------- -----------
Total 1.00GiB 1.05TiB 4.00GiB 64.00MiB 1.29TiB
Used 1007.30MiB 1.05TiB 1.66GiB 400.00KiB
What I don't get is... how can I have 244.8 GB unallocated when the
table below clearly shows that there is as much as 1.29TiB
unallocated.... does not appear to make sense to me at least...
next prev parent reply other threads:[~2016-05-23 19:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-23 13:34 btrfs filesystem usage - Wrong Unallocated indications - RAID10 Marco Lorenzo Crociani
2016-05-23 18:34 ` Nicholas D Steeves
2016-05-23 18:49 ` Zoiled [this message]
2016-05-23 19:19 ` Hugo Mills
2016-05-25 20:14 ` Henk Slager
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