Re: fsck in background?

[Hans Reiser <reiser@namesys.com>]

Vitaly Fertman wrote:

>On Monday 31 March 2003 21:14, Hans Reiser wrote:
>  
>
>>Oleg Drokin wrote:
>>    
>>
>>>Hello!
>>>
>>>On Mon, Mar 31, 2003 at 12:30:37PM +0200, myciel wrote:
>>>      
>>>
>>>>Yes, I know this sounds strange, but if one have 1T filesystem full of
>>>>small files,
>>>>reiserfsck estimates duration to be of order of months,
>>>>        
>>>>
>>>We have a patch that significantly speeds things up.
>>>In the similar case 28+ years estimated for pass 0 turned into 208 hours
>>>total
>>>      
>>>
>>As I said before, 208 hours is unacceptable and Vitaly needs to do more
>>work on it. If Vitaly doesn't know how to fix it, then I need to review
>>his algorithms in detail.
>>    
>>
>
>As I wrote you the objectid handling is not the problem anymore, and I 
>described also that the performance problem for now is nlink calculation 
>on semantic rebuild pass which needs many writes on disk what is not easy
>to optimize in the case with shared objectids.
>
by shared objectids you mean when more than one file is discovered by 
fsck to have the same oid?  what is the problem?

> Although it could be solved 
>with another pass which would solve all such shared objectid problems just 
>before semantic rebuild pass. 
>
>  
>


-- 
Hans