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Re: problems with real-time option.

To: Steve Lord <lord@xxxxxxx>
Subject: Re: problems with real-time option.
From: Nathan Scott <nathans@xxxxxxx>
Date: Wed, 27 Aug 2003 08:05:32 +1000
Cc: K Ramesh <kram@xxxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <1061899804.2030.3.camel@xxxxxxxxxxxxxxxxxxxxxxx>
References: <Pine.LNX.4.33.0308261218260.11803-100000@xxxxxxxxxxxxxxx> <1061899804.2030.3.camel@xxxxxxxxxxxxxxxxxxxxxxx>
Sender: linux-xfs-bounce@xxxxxxxxxxx
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On Tue, Aug 26, 2003 at 07:10:02AM -0500, Steve Lord wrote:
> On Tue, 2003-08-26 at 05:29, K Ramesh wrote:
> > 
> > Hi,
> >     I'm trying to create a real-time subvolume in my Linux System, running
> > SuSE 8.1 (Kernel: 2.4.19-64GB-SMP) on a dual-xeon PC. The system has a 3ware
> > ATA-Raid controller.
> > 
> > When I try to create a real-time subvolume, this what I get:
> > 
> > wop18:~ # mkfs  -t xfs -f -r rtdev=/dev/sda6 /dev/sda5
> > meta-data=/dev/sda5              isize=256    agcount=49, agsize=1048576 
> > blks
> > data     =                       bsize=4096   blocks=51201147, imaxpct=25
> >          =                       sunit=0      swidth=0 blks, unwritten=0
> > naming   =version 2              bsize=4096
> > log      =internal log           bsize=4096   blocks=6250, version=1
> >          =                       sunit=0 blks
> > realtime =/dev/sda6              extsz=65536  blocks=183237382,
> > rtextents=11452336
> > XFS: This FS has an RT subvol - specify -o rtdev on mount
> > mkfs.xfs: real-time device init failed
> > mkfs.xfs: filesystem failed to initialize

Get a new xfsprogs while you're at it, that'll resolve this error.

> ...
> Your kernel is almost that old ;-) Realtime should be working in recent
> kernels, be aware you need to use O_DIRECT to write to realtime
> subvolumes.

cheers.

-- 
Nathan


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