How to generate a large file allocating space

Alex Bligh alex at
Mon Nov 1 06:14:09 UTC 2010

--On 1 November 2010 00:13:33 -0600 Andreas Dilger <adilger at> 

> Hmm, why not simply use a cluster filesystem to do this?
> GFS and OCFS both handle shared writers for the same SAN disk (AFAIK),
> and Lustre uses ext4 as the underlying filesystem, and though it doesn't
> allow direct client writes to the same disk it will allow writing at 95%
> of the underlying raw disk performance from multiple clients.

Essentially because none of them do exactly what I need them to do,
so I am reinventing a slightly different wheel...

Alex Bligh

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