[Ocfs2-users] Zero allocated blocks for nonempty file

[Sunil Mushran]

Yes. Files and directories under 3800 bytes (or so) are inlined.
The max inline size depends on the features enabled.

On 09/02/2011 05:42 AM, Sérgio Surkamp wrote:
> Hi.
>
> I *suppose* its the inline-data feature, as it's permit the allocation
> of small files and directories inside the inode itself.
>
> > From mkfs.ocfs2 man page:
>
>                     inline-data
>                            Enable  inline-data  support.  If  this
>                     feature  is turned on, OCFS2 will store small files
>                     and directo- ries  inside  the inode block. Data is
>                     transparently moved out to an extent when it no
>                     longer fits inside the inode block. In some cases,
>                     this can also make a positive impact on  cold-cache
>                     directory  and  file operations.
>
> Regards,
> Sérgio
>
> Em Fri, 02 Sep 2011 12:36:08 +0200
> Michal Vyoral<michal.vyoral at chmi.cz>  escreveu:
>
>> Hello,
>> A question: some non empty files on ocfs2 appears to have zero
>> allocated blocks, see
>>
>> $ stat SXCZ80
>>    File: `SXCZ80'
>>    Size: 3133      	Blocks: 0          IO Block: 4096   regular
>> file Device: fe01h/65025d	Inode: 9484572     Links: 1
>> Access: (0644/-rw-r--r--)  Uid: ( 1001/   webms)   Gid:
>> (   33/www-data) Access: 2011-08-31 11:38:23.272211360 +0000
>> Modify: 2011-08-29 13:27:17.080403887 +0000
>> Change: 2011-08-29 13:27:17.080403887 +0000
>>
>> How is it possible?
>>
>> Environment:
>> OS: Debian 6.0.1
>> Kernel: 2.6.38.5-custom-1
>> Ocfs2-tools: 1.4.4-3
>>
>> Thanks.
>> Michal Vyoral
>>
>>
>>
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>