RE: Re: Sparse files in GFS

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Title: R: Re: Sparse files in GFS

The idea is to do it efficiently by manipulating the file system metadata without actually writing the data.

Doing dd to TBs of space would take a very long time.

 

Bests,

 

Samuel.

 


From: linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of Edoardo Causarano
Sent: Monday, December 11, 2006 2:00 AM
To: wcheng@xxxxxxxxxx; linux-cluster@xxxxxxxxxx
Subject: R: Re: Sparse files in GFS

 

Wouldn't dd do?


-----Original Message-----
From: linux-cluster-bounces@xxxxxxxxxx <linux-cluster-bounces@xxxxxxxxxx>
To: linux clustering <linux-cluster@xxxxxxxxxx>
Sent: Mon Dec 11 00:30:07 2006
Subject: Re: Sparse files in GFS

Krikler, Samuel wrote:

> Hi,
>
> Do you know if there is any tool that can efficiently pad files
> (pre-allocate their space) in GFS files to prevent the files from
> being sparse?
>
> I’d like to efficiently create nice continuous files of hundreds of
> GBs (both logically and physically) before I start using them in my
> application.
>
> Thanks,
>
> Samuel.
>
Sorry, not at this moment. It has been on the to-do list. One question
though - these spaces do not need to be zero-padded, right ?

-- Wendy

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