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How long does it take to balance a 2x1TB RAID1 ?

DISCUSSION Dirk Lutzebäck 2 participants 2 messages Jan 6, 2012 – Jan 9, 2012 Btrfs file system

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Hi,

I have setup up a btrfs RAID1 using two 1TB drives. How long should a 'btrfs filesystem balance' take? It is running now for more than 3 days on about 30% CPU and 40% wait state.

I am using stock btrfs from ubuntu 11.10 kernel 3.0.0

Regards

Dirk

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Quoted 4 lines · On 1/6/2012 6:23 AM, Dirk Lutzeb=C3=A4ck wrote:

Hi,

I have setup up a btrfs RAID1 using two 1TB drives. How long should a 'btrfs filesystem balance' take? It is running now for more than 3 da=

ys

Quoted 3 lines

on about 30% CPU and 40% wait state.

I am using stock btrfs from ubuntu 11.10 kernel 3.0.0

Not nearly that long. Assuming it actually has to rewrite 1 TB of data= =20
and is only getting 50 MB/s, that should only take about 5.5 hours. Yo= u=20
might want to try a newer kernel ( like the one from 12.04 ). --
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