[ZODB-Dev] HOWTO recover from Data.fs.tmp

[Chris McDonough]

On Oct 2, 2006, at 5:38 PM, Juan Pablo Giménez wrote:

>
>     I'm not blaming the zope team... zope is great!
>
>     but the real problem wasn't a deleted file... was a corrupted  
> file... and a sysadmin who doesn't read the log file...
>
>     but... if zope knows about the corrupted Data.fs, why keeps  
> writing into .tmp file?!
>
>
>                                                                        
>           Saludos...
>

A diagram of that sentence might help:

"but... if zope knows about the corrupted Data.fs"... First of all,  
do you know that Zope knew the file was corrupt?  How do *you* know  
it had been corrupted?  And what does 'corrupt' mean?  It seems like  
even it it had been corrupted in some way (meaning, say, bytes inside  
of it had been overwritten with garbage, for example), it wouldn't  
matter, because apparently someone unlinked it so it's not anywhere  
around to analyze.  So I'm afraid nothing can be done without some  
sort of backup copy or unless Zope is still running and you can get  
at its file descriptor from within the /proc filesystem or something.

"why keeps writing into .tmp file?!" ... this is not meaningful to  
the conversation, it'd be better just to leave this part of the  
sentence above off.

In any case, I'm not sure there's anything we can do to help unless  
you have a backup or unless Zope happens to still be running.

- C