From: Stephane Chazelas <stephane_chazelas@yahoo.fr>
To: helmut@hullen.de
Cc: linux-btrfs@vger.kernel.org
Subject: Re: btrfs balancing start - and stop?
Date: Mon, 11 Apr 2011 09:42:17 +0100 [thread overview]
Message-ID: <chaz20110411084217.GB5587@seebyte.com> (raw)
In-Reply-To: <chaz20110406114350.GA20568@seebyte.com>
2011-04-06 12:43:50 +0100, Stephane Chazelas:
[...]
> The rate is going down. It's now down to about 14kB/s
>
> [658654.295752] btrfs: relocating block group 3919858106368 flags 20
> [671932.913235] btrfs: relocating block group 3919589670912 flags 20
> [686189.296126] btrfs: relocating block group 3919321235456 flags 20
> [701511.523990] btrfs: relocating block group 3919052800000 flags 20
> [718591.316339] btrfs: relocating block group 3918784364544 flags 20
> [725567.081031] btrfs: relocating block group 3918515929088 flags 20
> [744415.011581] btrfs: relocating block group 3918247493632 flags 20
> [762365.021458] btrfs: relocating block group 3917979058176 flags 20
> [780504.726067] btrfs: relocating block group 3917710622720 flags 20
[...]
> At this rate, the balancing would be over in about 8 years.
[...]
Hurray! The btrfs balance eventually ran through after almost exactly 2 weeks.
It didn't get down to 0:
[1189505.152717] btrfs: found 60527 extents
[1189505.440565] btrfs: relocating block group 3910731300864 flags 20
[1199805.071045] btrfs: found 60235 extents
[1199805.447821] btrfs: relocating block group 3910462865408 flags 20
[1207914.737372] btrfs: found 58039 extents
iostat reckons 9TB have been written to disk in the whole
process (4.5TB read from them (!?)).
There hasn't been any change in allocation though:
# df -h /backup
Filesystem Size Used Avail Use% Mounted on
/dev/sda4 8.2T 3.5T 3.2T 53% /backup
# btrfs fi df /backup
Data, RAID0: total=3.42TB, used=3.41TB
System, RAID1: total=16.00MB, used=228.00KB
Metadata, RAID1: total=28.00GB, used=20.47GB
# btrfs fi show
Label: none uuid: a0ae35c4-51f2-405f-a4bb-e4f134b1d193
Total devices 3 FS bytes used 3.43TB
devid 4 size 2.73TB used 1.17TB path /dev/sdc
devid 3 size 2.73TB used 1.17TB path /dev/sdb
devid 2 size 2.70TB used 1.14TB path /dev/sda4
Btrfs Btrfs v0.19
Still 1.5TB missing.
--
Stephane
next prev parent reply other threads:[~2011-04-11 8:42 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-01 11:14 btrfs balancing start - and stop? Struan Bartlett
2011-04-01 11:59 ` Hugo Mills
2011-04-05 16:06 ` Struan Bartlett
2011-04-01 12:12 ` Helmut Hullen
2011-04-01 13:22 ` Konstantinos Skarlatos
2011-04-01 13:36 ` Helmut Hullen
2011-04-01 13:52 ` Hugo Mills
[not found] ` <20110401133736.GB2984@carfax.org.uk>
2011-04-01 14:24 ` Konstantinos Skarlatos
2011-04-01 18:33 ` Stephane Chazelas
2011-04-01 19:26 ` Helmut Hullen
2011-04-03 18:53 ` Stephane Chazelas
2011-04-03 19:35 ` Helmut Hullen
2011-04-04 19:07 ` Stephane Chazelas
2011-04-06 11:43 ` Stephane Chazelas
2011-04-11 8:42 ` Stephane Chazelas [this message]
2011-04-11 9:14 ` Helmut Hullen
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