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Re: XFS real-time allocator

To: harryxiyou <harryxiyou@xxxxxxxxx>
Subject: Re: XFS real-time allocator
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Wed, 30 Oct 2013 06:55:31 +1100
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <CAD+1EGMos6SgyKDAKc8LHajUMbd9acZ9ghKCG=ksKZnhTxawDw@xxxxxxxxxxxxxx>
References: <CAD+1EGMos6SgyKDAKc8LHajUMbd9acZ9ghKCG=ksKZnhTxawDw@xxxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Tue, Oct 29, 2013 at 10:35:06PM +0800, harryxiyou wrote:
> Hi all,
> 
> I have created a real-time partition as follows.
> 
> root@node2:~# mkfs.xfs -f -r rtdev=/dev/sda3 /dev/sda4
> 
> meta-data=/dev/sda4              isize=256    agcount=4, agsize=56122440 blks
> 
>          =                       sectsz=512   attr=2, projid32bit=0
> 
> data     =                       bsize=4096   blocks=224489757, imaxpct=25
> 
>          =                       sunit=0      swidth=0 blks
> 
> naming   =version 2              bsize=4096   ascii-ci=0
> 
> log      =internal log           bsize=4096   blocks=109614, version=2
> 
>          =                       sectsz=512   sunit=0 blks, lazy-count=1
> 
> realtime =/dev/sda3              extsz=4096   blocks=14865657,
> rtextents=14865657
> 
> 
> I wonder how to use its real-time feature. And I should call some interfaces
> supported by XFS in the user/kernel-space, right?

$ man xfsctl

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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