linux-ext4 - Re: [PATCH] fiemap support for ext3

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Message-id: <20080424145957.GO3095@webber.adilger.int>
Date:	Thu, 24 Apr 2008 08:59:57 -0600
From:	Andreas Dilger <adilger@....com>
To:	Josef Bacik <jbacik@...hat.com>
Cc:	linux-ext4@...r.kernel.org, sandeen@...hat.com
Subject: Re: [PATCH] fiemap support for ext3

On Apr 24, 2008  08:36 -0400, Josef Bacik wrote:
> I'm wondering if we should add a flag to the FIEMAP stuff to specify
> wether the inode you are mapping does truly have extents or if its just
> more of a block map.  Do you think something like that would be usefull?

You can already do lsattr (EXT*_IOC_GETFLAGS) on a file to determine if
it is using extents:

# lsattr /mnt/tmp/O/0/d0/459808 
-------------e /mnt/tmp/O/0/d0/459808


Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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