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Re: creating a new 80 TB XFS

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: creating a new 80 TB XFS
From: Richard Ems <richard.ems@xxxxxxxxxxxxxxxxx>
Date: Mon, 01 Oct 2012 16:28:49 +0200
Cc: xfs@xxxxxxxxxxx
In-reply-to: <4F47AA24.8010209@xxxxxxxxxxx>
References: <4F478818.4050803@xxxxxxxxxxxxxxxxx> <4F47AA24.8010209@xxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120825 Thunderbird/15.0
On 02/24/2012 04:17 PM, Eric Sandeen wrote:
>> *MKFS*
>> > We also heavily use ACLs for almost all of our files. Christoph Hellwig
>> > suggested in a previous mail to use "-i size=512" on XFS creation, so my
>> > mkfs.xfs would look something like:
>> > 
>> > mkfs.xfs -i size=512 -d su=stripe_size,sw=28 -L Backup_2 /dev/sdX1
> Be sure the stripe geometry matches the way the raid controller is
> set up.
> You know the size of your acls, so you can probably do some testing
> to find out how well 512-byte inodes keep ACLs in-line.

Hi Eric,

This is a reply to an email from you sent 7 months ago ...

How could I do the testing you were proposing? How can I find out if my
512-byte inodes keep our ACLs in-line?

I am going to create a similar new RAID set, and wanted to check this
before on the one already in production.


Richard Ems       mail: Richard.Ems@xxxxxxxxxxxxxxxxx

Cape Horn Engineering S.L.
C/ Dr. J.J. Dómine 1, 5º piso
46011 Valencia
Tel : +34 96 3242923 / Fax 924

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