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Re: Questions about XFS

To: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>, harryxiyou <harryxiyou@xxxxxxxxx>
Subject: Re: Questions about XFS
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Fri, 25 Oct 2013 09:57:54 -0500
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131025164255.46d2829c@xxxxxxxxxxxxxxxxxxxx>
References: <CAD+1EGPG1G9Q8kwaSUjxVjvx73UByLb3G0rmUbgJr+zD-CnjEw@xxxxxxxxxxxxxx> <20131025164255.46d2829c@xxxxxxxxxxxxxxxxxxxx>
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On 10/25/13 9:42 AM, Emmanuel Florac wrote:
> Le Fri, 25 Oct 2013 22:28:10 +0800
> harryxiyou <harryxiyou@xxxxxxxxx> écrivait:
> 
>> 1, How to install XFS on Linux OS, I should do like below, right?
>>    a, Download latest Linux Kernel Source Codes.
>>    b, Compile the Linux Kernel and select XFS feature when I do the
>> configuration (make menuconfig).
> 
> No, XFS is supported by all Linux distributions out of the box. To use
> XFS, you may eventually need to install the xfs-progs package.
> 
>  
>> 2, Does XFS support real-time feature after I install it on Linux
>> Kernel? And how to use real-time feature on Linux Kernel.
>>
> 
> Yes. What do you want to do with realtime XFS?
> 

well, yes and no.  It supports the "realtime subvolume" which is
not really technically "realtime."  It does have a more deterministic
allocator, but it doesn't have GRIO (Guaranteed Realtime I/O) like 
IRIX does.

-Eric

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