lkml.org 
[lkml]   [2010]   [Jun]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: fiemap is broken for sparse file in ext4?
From
On Fri, Jun 11, 2010 at 11:46 AM, Eric Sandeen <sandeen@redhat.com> wrote:
> Tao Ma wrote:
>
>>> What are you using to call fiemap?  Here it seems to be working:
>> I just wrote a simple test program by calling ioctl. It is attached.
>> btw, you need to call it immediately after dd so that we have a chance
>> that ext4 don't have time to allocate extents. ;)
>
> OK I take it back, I do see it.  *cough* too many different filesystems
> on this box ... ;)
>
> Yes, it does look like a bug.
>
> -Eric

I'm not clear how this is supposed to work.

Is this just a userspace bug in that FIEMAP_FLAG_SYNC is needed in the
fiemap call, or is there a kernel bug as well?

If fiemap is called with the FIEMAP_FLAG_SYNC flag is there currently a problem?

Thanks
Greg
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2010-06-11 18:49    [W:0.151 / U:0.340 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site