linux-kernel - Re: GRIO in Linux XFS?

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Date:	Thu, 12 Oct 2006 09:24:10 +1000
From:	Vlad Apostolov <vapo@....com>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
CC:	"Phetteplace, Thad (GE Healthcare, consultant)" 
	<Thad.Phetteplace@...com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	xfs@....sgi.com
Subject: Re: GRIO in Linux XFS?

Jan Engelhardt wrote:
>> what is the status of GRIO support in the Linux port of XFS?
>>     
griov2 supports XFS Linux/Irix on local and cluster volumes but it is 
not an open source
project. Please check this link for more information:
http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi/0650/bks/SGI_Admin/books/GRIO2_AG/sgi_html/ch01.html
>
> Called realtime volume.
> (http://en.wikipedia.org/wiki/XFS section 2.11)
>
>   
>> Also, if the answer is 'non existent', what is the recommended
>> alternative?  I've got an application that needs to stream a
>> huge amount of data to the harddrive without dropping any and
>> without blocking the sender.  We will be pushing the limits
>> of our high-end raid striped disks.  This seems the exactly
>> the type of thing GRIO was made for, but last I heard it was
>> missing from Linux XFS with no plans to add it.  Any change
>> in that?  I know I can get almost there with I/O priorities
>> and the RT features in 2.6... but its not quite the same
>> thing.
>>
>> Apologies if this has been beat to death here or elsewhere...
>> I've googled the heck out of this and rummaged around in the
>> list archives (as much as this fscking corporate firewall will
>> let me) with little result.  I'll gladly RTFM if someone can
>> point me at the right one.  :-/
>>
>> Feel free to CC me on replies, as I read the LKML in digest
>> format.
>>
>> Thanks,
>>
>> Thad Phetteplace
>>
>> -
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>>
>>     
>
> 	-`J'
>   

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