[lustre-discuss] FIEMAP support for Lustre

Wenji Wu wenji at fnal.gov
Mon Aug 24 10:32:52 PDT 2015


Thanks a lot.

Which version of Luster should I take a look?



On 8/24/15, 11:06 AM, "Drokin, Oleg" <oleg.drokin at intel.com> wrote:

>On Aug 24, 2015, at 11:57 AM, Wenji Wu wrote:
>> Hello, everybody,
>> I understand that ext2/3/4 support FIEMAP to get file extent mapping.
>> Does Lustre supports similar feature like FIEMAP? Can Lustre client
>>gets FIEMAP-like information on a Luster file system?
>Yes, Lustre does support fiemap.
>You can see patched ext4progs and the filefrag included there works on
>top of Lustre too, as an example.
>lustre/tests/checkfiemap.c in the lustre source tree is another example
>user of this functionality that you can consult.
>    Oleg

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