Re: [Zope] ZODB BTrees File Storage error on start up
David Pratt wrote at 2005-8-10 22:07 -0300:
>Hi Dieter. It is rather strange for sure. The warning has appeared
>over the past couple of days. First day I removed what I thought might
>be a bad CMFBTree folder since it was last thing I remember working
>with from previous night to do with BTrees. Then it appeared again -
>first restart of the day - it never appeared again that day even after
>a number of restarts. Received the error again this morning - first
>restart of day. This time cleared the Data.fs.index and restarted.
>Again it did not appear again all day after a number of restarts. It
>almost makes me wonder if it is somehow related to automated backup
>since it appears consistently on the first restart of the day. Can this
>make any sense?
No, it does not
But nevertheless, you see what you see?
"__basicnew__" is a class method. It must be there independent
on the concrete object.
If it were not there, then whether or not you see the error
may depend on whether or not the index file is present (you
should not see it when there is no index file; you may, if there is).
But, it should be there. If not, then the shared object
"BTrees/_fsBTree.{so,pyd}" must have been badly executed
(maybe because it is corrupt) -- but it would be surprising
that this shows up in such a harmless way (one would instead
expect a memory violation or bad opcode or something really nasty).
--
Dieter
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Re: [Zope] ZODB BTrees File Storage error on start up
Hi Dieter. It is rather strange for sure. The warning has appeared over the past couple of days. First day I removed what I thought might be a bad CMFBTree folder since it was last thing I remember working with from previous night to do with BTrees. Then it appeared again - first restart of the day - it never appeared again that day even after a number of restarts. Received the error again this morning - first restart of day. This time cleared the Data.fs.index and restarted. Again it did not appear again all day after a number of restarts. It almost makes me wonder if it is somehow related to automated backup since it appears consistently on the first restart of the day. Can this make any sense? Like the index is getting corrupted from backup. The only other thing that I can think of at the moment is that I had some nested CMFBTreeFolders that were not registered properly registered in the types tool yet inside a CMFSite instance. These were added programmatically with manage_add. I don't know if this could result in this error. In any case, I am resolving the types tool registration issue tonight and will see what happens tomorrow am. I am restarting this zope several times a day since I am developing on it. I have been adding and removing many BTree folders since I am in process of building a product that will use these quite a bit. I have been running tests then removing CMFBTreeFolders, updating product, restarting, rerunning with changes, etc In any case I will examine fsBtree as you have suggested if I see warning again tomorrow in my log. This is a relatively new CMF1.5.2 and Zope2.8.0 instance and the only server I have this combination on at the moment. Regards, David On Wednesday, August 10, 2005, at 06:37 PM, Dieter Maurer wrote: David Pratt wrote at 2005-8-8 11:11 -0300: I just began receiving this error this morning in one of my event logs on start up. It looks serious. 2005-08-08T08:49:26 WARNING ZODB.FileStorage Failed to load database index: exceptions.AttributeError: type object 'BTrees._fsBTree.fsBTree' has no attribute '__basicnew__' Can someone advise a course of action and what may have happened to generate such an error. I use CMFBTreeFolders extensively in CMF. Many thanks. Mysterious: "BTrees._fsBTree.fsBTree" should have a '__basicnew__' attribute (like all 'ExtensionClass'es). Try to import "fsBTree" in an interactive Python interpreter and check it. -- Dieter ___ Zope maillist - Zope@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 )
Re: [Zope] ZODB BTrees File Storage error on start up
David Pratt wrote at 2005-8-8 11:11 -0300: >I just began receiving this error this morning in one of my event logs >on start up. It looks serious. > >2005-08-08T08:49:26 WARNING ZODB.FileStorage Failed to load database >index: exceptions.AttributeError: type object 'BTrees._fsBTree.fsBTree' >has no attribute '__basicnew__' > >Can someone advise a course of action and what may have happened to >generate such an error. I use CMFBTreeFolders extensively in CMF. Many >thanks. Mysterious: "BTrees._fsBTree.fsBTree" should have a '__basicnew__' attribute (like all 'ExtensionClass'es). Try to import "fsBTree" in an interactive Python interpreter and check it. -- Dieter ___ Zope maillist - Zope@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 )
Re: [Zope] ZODB BTrees File Storage error on start up
Hi Chris. Thanks for your reply. It is a relatively new ZODB from a fresh 2.8.0 installed a week or so ago. I went back over what I had been doing last evening with the site and it looks like something may have happened with a CMFBTree Folder instance - not sure exactly what at this point since there was no traceback. I am adding nested CMFBTreeFolders (3 levels) as part of a product using manage_addProduct a statements like the following. Is there anything wrong with this approach? btree_url0_folder_obj.manage_addProduct['BTreeFolder2'].manage_addConten t(type='CMF BTree Folder', id=btree_url1_folder_id) I removed the last instance I created last night and restarted and everything looks good again. Not sure it there is some sort of bug lurking but will be keep a close watch for any repeat of this in future. Thanks David ___ Zope maillist - Zope@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 )
Re: [Zope] ZODB BTrees File Storage error on start up
Hmm... not sure what causes this (did you upgrade ZODB versions?) but you may try: 1. Shut down Zope (or ZEO if you use that). 2. find your Data.fs file 3. Delete the file beside it named Data.fs.index 4. Restart Zope (or ZEO). See if the error goes away.. FileStorage builds an index of oid to file position in this index. It's transient, and will be rebuilt when the process is restarted. - C On Mon, 2005-08-08 at 11:11 -0300, David Pratt wrote: > I just began receiving this error this morning in one of my event logs > on start up. It looks serious. > > 2005-08-08T08:49:26 WARNING ZODB.FileStorage Failed to load database > index: exceptions.AttributeError: type object 'BTrees._fsBTree.fsBTree' > has no attribute '__basicnew__' > > Can someone advise a course of action and what may have happened to > generate such an error. I use CMFBTreeFolders extensively in CMF. Many > thanks. > > Regards, > David > ___ > Zope maillist - Zope@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 ) > ___ Zope maillist - Zope@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 )
[Zope] ZODB BTrees File Storage error on start up
I just began receiving this error this morning in one of my event logs on start up. It looks serious. 2005-08-08T08:49:26 WARNING ZODB.FileStorage Failed to load database index: exceptions.AttributeError: type object 'BTrees._fsBTree.fsBTree' has no attribute '__basicnew__' Can someone advise a course of action and what may have happened to generate such an error. I use CMFBTreeFolders extensively in CMF. Many thanks. Regards, David ___ Zope maillist - Zope@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 )
