[Zope] RE: [ZODB-Dev] can't pack ZODB anymore

[Jonathan Cyr]

Wow, the wiki article on Data.fs, corruption, backup, etc.  What a 
gem,... never saw that before.

Just wanted to let you know, one question answered helps others.

Much Appreciated,

-Jon Cyr
 cyrj at cyr.info

RE:

http://zope.org/Wikis/ZODB/FileStorageBackup

. 


Tim Peters wrote:

>[shan sverige]
>  
>
>>When I try to pack I get:
>>
>>   Error Value: /usr/local/Zope-2.7.0/var/Data.fs:31906881:time-stamp
>>   reduction: 03537a82059cf1cc <= 0355bcc95b5ace33
>>    
>>
>
>Ouch.  Looks like the system clock on your machine got set backwards by
>about 3 months at some point:
>
>  
>
>>>>from ZODB.utils import *
>>>>print TimeStamp.TimeStamp(p64(0x03537a82059cf1cc))
>>>>        
>>>>
>2004-03-02 17:38:01.315562
>  
>
>>>>print TimeStamp.TimeStamp(p64(0x0355bcc95b5ace33))
>>>>        
>>>>
>2004-06-12 12:57:21.411260
>  
>
>
>Then you got bit by this:
>
>    http://zope.org/Collectors/Zope/1327
>
>While no distinct ZODB release was made to correspond with Zope 2.7.2, that
>bug should be fixed in Zope 2.7.2.  It's still a panic-level problem if the
>clock is seen to go backwards by that much, but at least a panic message
>will get logged about it now, and FileStorage will force transaction ids to
>be monotonically increasing anyway now.
>
>In any case, packing isn't an error recovery procedure.  Run the diagnostic
>scripts explained here, and start making backups (also explained here):
>
>    http://zope.org/Wikis/ZODB/FileStorageBackup
>
>  
>
>>After running fsrecover.py the resulting Data.fs can't be mounted. I now
>>get:
>>
>>   ZODB.POSException.ConflictError: database conflict error
>>    
>>
>
>Sorry, but I bet you have multiple problems in your database now, and
>probably stemming from whatever went wrong with your system that caused your
>clock to go insane.  This could be difficult to recover from.  Running
>fstest and fsrefs (explained on the page linked to above) will help
>determine the extent of the damage.
>
>_______________________________________________
>Zope maillist  -  Zope at zope.org
>http://mail.zope.org/mailman/listinfo/zope
>**   No cross posts or HTML encoding!  **
>(Related lists - 
> http://mail.zope.org/mailman/listinfo/zope-announce
> http://mail.zope.org/mailman/listinfo/zope-dev )
>
>  
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.zope.org/pipermail/zope/attachments/20040727/717adf8e/attachment.htm