Re: Corrupted/unreadable journal: reiser vs. ext3

[Hans Reiser <reiser@namesys.com>]

Oleg Drokin wrote:

>Hello!
>
>On Tue, Feb 18, 2003 at 09:21:54PM +0300, Hans Reiser wrote:
>
>  
>
>>>By all means, don't do checks for an hour, or allow users to set the 
>>>maximum
>>>boot check duration in the superblock.  I'm sure users don't mind waiting
>>>5s at boot time if it means they don't lose data.
>>>      
>>>
>>I doubt that there is a lot we can check in 5 seconds on a filesystem 
>>with lots of small files, but I could be wrong.
>>    
>>
>
>We discussed this with Vitaly today.
>We can do some simply things and if some of these show wrong signs,
>we can do a warning and sysadmin can schedule a downtime for
>fsck.
>Simple things are: read the bitmaps and compare used block counts with
>what stored in superblock.
>Check consistency of tree root (we have a pointer there in superblock,
>also it's supposed level).
>May be something else that is that simple.
>
>Bye,
>    Oleg
>
>
>  
>
Ok.

-- 
Hans