Re: [Mysqlfs-general] Some questions.

[Stef B. <st...@bo...>]

Michal Ludvig wrote:
> Stef Bon wrote:
>
>   
>> First the overwriting of a file by another smaller one. This makes
>> (if both files differ much in size and both are big enough) that 
>> datablocks will be deleted. I've been searching the
>> sourcecode, but cannot find out how this works exactly. So before a file 
>> is written, there should be a procedure which
>> checks the file already exits, and removes the datablocks which will not 
>> be used. Is this right? If so, where can I find this
>> in the sourcecode?
>>     
>
> Hi,
> have a look at mysqlfs_truncate() in mysqlfs.c and query_truncate() in
> query.c. These two ensure that the non-used blocks are removed.
>
>   
Thanks for the fast reply.

Ok I've found these functions. Are they called by Fuse, cause I did not 
find where this truncate
will be done.

Stef Bon
> Michal
>
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