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Re: Anyone using XFS in production on > 20TiB volumes?

To: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>
Subject: Re: Anyone using XFS in production on > 20TiB volumes?
From: Chris Wedgwood <cw@xxxxxxxx>
Date: Wed, 22 Dec 2010 09:06:20 -0800
Cc: xfs@xxxxxxxxxxx
In-reply-to: <alpine.DEB.2.00.1012221128440.5245@xxxxxxxxxxxxxxxx>
References: <alpine.DEB.2.00.1012221128440.5245@xxxxxxxxxxxxxxxx>
On Wed, Dec 22, 2010 at 11:30:05AM -0500, Justin Piszcz wrote:

> Is there anyone currently using this in production?

yes (in the past more than now)

> How much ram is needed when you fsck with a many files on such a
> volume?

didn't check specifically, but with older xfsprogs it could easily use
more than 16GB

> Is inode64 recommended on a 64-bit system?

it's for inode distribution, not 64-bit vs 32-bit system

yes, enable that ... it should be the default

> Any specific 64-bit tweaks/etc for a large 43TiB FS?

if using hw raid teach mkfs about the array geom, that coupled with
inode64 made a huge difference in performance that last time i did
this

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