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Re: Optimal XFS formatting options?

To: xfs@xxxxxxxxxxx
Subject: Re: Optimal XFS formatting options?
From: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
Date: Tue, 17 Jan 2012 12:17:49 +0100
In-reply-to: <201201171019.58714@xxxxxx>
Organization: Intellique
References: <33140169.post@xxxxxxxxxxxxxxx> <20120116231121.GB6922@dastard> <4F14EBAF.10808@xxxxxxxxxxxxxxxxx> <201201171019.58714@xxxxxx>
Le Tue, 17 Jan 2012 10:19:55 +0100
Michael Monnerie <michael.monnerie@xxxxxxxxxxxxxxxxxxx> écrivait:

> - expand array by factors of two. So if you have 10 data drives, add
> 10 data drives. But that creates other problems (probability of
> single drive failure + time to recover a single broken disk)

From my experience 20 drives is OK for RAID-6. And rebuild time doesn't
change much with array size, anyway.

Misaligned partitions, on the other hand, can easily halve array
throughput from my own measurements.

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