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Re: is realtime device supported?

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: is realtime device supported?
From: Wengang Wang <wen.gang.wang@xxxxxxxxxx>
Date: Sun, 25 Apr 2010 18:08:33 +0800
Cc: Wengang Wang <wen.gang.wang@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, greg.marsden@xxxxxxxxxx, joe.jin@xxxxxxxxxx, xfs@xxxxxxxxxxx
In-reply-to: <4BD111CA.4040205@xxxxxxxxxxx>
References: <20100422144939.GA3822@xxxxxxxxxxxxxxxxx> <20100422162325.GA29668@xxxxxxxxxxxxx> <4BD07F06.70101@xxxxxxxxxxx> <20100423030011.GB2949@xxxxxxxxxxxxxxxxx> <4BD111CA.4040205@xxxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-08-17)
Hi Eirc,

On 10-04-22 22:19, Eric Sandeen wrote:
> Wengang Wang wrote:
> > On 10-04-22 11:53, Eric Sandeen wrote:
> >> Christoph Hellwig wrote:
> >>> On Thu, Apr 22, 2010 at 10:49:39PM +0800, Wengang Wang wrote:
> >>>> Do we support realtime device?
> >>>>
> >>>> I got the following error:
> >>> It sounds like you do not have CONFIG_XFS_RT enable in your kernel
> >>> configuration.  But to answer your original question the realtime
> >>> device is not supported in the sense of actively maintained.  The
> >>> code is still there, but more or less for legacy reasons.  I would
> >>> not recommend it for new installations.
> > 
> > Yes, CONFIG_XFS_RT is disabled.
> > [wwg@desk linux-2.6.18.x86_64]$ grep CONFIG_XFS_RT .config
> > # CONFIG_XFS_RT is not set
> > 
> > And Ok I see. Also should we add the point to man page of mkfs.xfs?
> > 
> >> Agreed.
> >>
> >> FWIW, dmesg probably gave you a more helpful error message than
> >> mount...
> >>
> >>                 cmn_err(CE_WARN, "XFS: RT mount failed");
> >>
> >> hm or maybe not ;)
> > 
> > Only "XFS: RT mount failed" :)
> 
> A patch to explicitly say that it failed because CONFIG_XFS_RT was off
> would be happily accepted, too.

Yes. I will try to make the patch.
> 
> I am curious, are you doing a lot of QA type work on xfs?  You are finding
> some interesting things that could certainly be fixed up, we appreciate it.

I am just interested in it :). I like to play with various file systems.

regards,
wengang.

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