Re: [ZODB-Dev] ZEORaid was Re: Restoring from repozo and reusing an index file?

2010-06-21 Thread Christian Theune
On 06/18/2010 01:17 PM, Chris Withers wrote:
 Christian Theune wrote:
 and a
 mysterious bug WRT oid generation
 This one's new to me, where can I find out more?

 The one you reported quite a while ago that ended in mixed-up OID
 results.

 Have you got a url to the tracker issue?

 I think it was this one:
 https://bugs.edge.launchpad.net/gocept.zeoraid/+bug/485976

 Okay, but again, this one seems to be mitigated by only running one
 zeoraid server at a time, right?

Not completely sure as I didn't find the cause of the OIDs getting out 
of sync last time.

Christian

-- 
Christian Theune · c...@gocept.com
gocept gmbh  co. kg · forsterstraße 29 · 06112 halle (saale) · germany
http://gocept.com · tel +49 345 1229889 0 · fax +49 345 1229889 1
Zope and Plone consulting and development

___
For more information about ZODB, see the ZODB Wiki:
http://www.zope.org/Wikis/ZODB/

ZODB-Dev mailing list  -  ZODB-Dev@zope.org
https://mail.zope.org/mailman/listinfo/zodb-dev


Re: [ZODB-Dev] ZEORaid was Re: Restoring from repozo and reusing an index file?

2010-06-18 Thread Chris Withers
Christian Theune wrote:
 and a
 mysterious bug WRT oid generation
 This one's new to me, where can I find out more?

 The one you reported quite a while ago that ended in mixed-up OID
 results.

 Have you got a url to the tracker issue?
 
 I think it was this one:
 https://bugs.edge.launchpad.net/gocept.zeoraid/+bug/485976

Okay, but again, this one seems to be mitigated by only running one 
zeoraid server at a time, right?

Chris

-- 
Simplistix - Content Management, Batch Processing  Python Consulting
 - http://www.simplistix.co.uk
___
For more information about ZODB, see the ZODB Wiki:
http://www.zope.org/Wikis/ZODB/

ZODB-Dev mailing list  -  ZODB-Dev@zope.org
https://mail.zope.org/mailman/listinfo/zodb-dev


Re: [ZODB-Dev] ZEORaid was Re: Restoring from repozo and reusing an index file?

2010-06-12 Thread Chris Withers
Christian Theune wrote:
 On 06/11/2010 05:50 PM, Alan Runyan wrote:
 I suppose you could look at zeoraid.
 Hadn't thought of that, will look at it, thanks!
 Anyone using ZEORaid in production?
 
 I hope not. There's still open issues with split brain situations 

IIUC, that can be mitigated by only having one zeoraid server live at a 
time?

 and a 
 mysterious bug WRT oid generation 

This one's new to me, where can I find out more?

Chris

-- 
Simplistix - Content Management, Batch Processing  Python Consulting
- http://www.simplistix.co.uk
___
For more information about ZODB, see the ZODB Wiki:
http://www.zope.org/Wikis/ZODB/

ZODB-Dev mailing list  -  ZODB-Dev@zope.org
https://mail.zope.org/mailman/listinfo/zodb-dev


Re: [ZODB-Dev] ZEORaid was Re: Restoring from repozo and reusing an index file?

2010-06-12 Thread Christian Theune
On 06/12/2010 09:47 AM, Chris Withers wrote:
 Christian Theune wrote:
 On 06/11/2010 05:50 PM, Alan Runyan wrote:
 I suppose you could look at zeoraid.
 Hadn't thought of that, will look at it, thanks!
 Anyone using ZEORaid in production?

 I hope not. There's still open issues with split brain situations

 IIUC, that can be mitigated by only having one zeoraid server live at a
 time?

Yes. Our goal is to mitigate even splits by making the system read-only 
and manually allowing to specify which parts are active in that case.

An automatic voting procedure would then require more than 2 
participants, but with even splits you at least won't fail horribly.

 and a
 mysterious bug WRT oid generation

 This one's new to me, where can I find out more?

The one you reported quite a while ago that ended in mixed-up OID results.

Christian

-- 
Christian Theune · c...@gocept.com
gocept gmbh  co. kg · forsterstraße 29 · 06112 halle (saale) · germany
http://gocept.com · tel +49 345 1229889 0 · fax +49 345 1229889 1
Zope and Plone consulting and development

___
For more information about ZODB, see the ZODB Wiki:
http://www.zope.org/Wikis/ZODB/

ZODB-Dev mailing list  -  ZODB-Dev@zope.org
https://mail.zope.org/mailman/listinfo/zodb-dev


Re: [ZODB-Dev] ZEORaid was Re: Restoring from repozo and reusing an index file?

2010-06-12 Thread Chris Withers
Christian Theune wrote:
 On 06/12/2010 09:47 AM, Chris Withers wrote:
 Christian Theune wrote:
 On 06/11/2010 05:50 PM, Alan Runyan wrote:
 I suppose you could look at zeoraid.
 Hadn't thought of that, will look at it, thanks!
 Anyone using ZEORaid in production?
 I hope not. There's still open issues with split brain situations
 IIUC, that can be mitigated by only having one zeoraid server live at a
 time?
 
 Yes. Our goal is to mitigate even splits by making the system read-only 
 and manually allowing to specify which parts are active in that case.
 
 An automatic voting procedure would then require more than 2 
 participants, but with even splits you at least won't fail horribly.

*nods sagely while looking a little blank* ;-)

 and a
 mysterious bug WRT oid generation
 This one's new to me, where can I find out more?
 
 The one you reported quite a while ago that ended in mixed-up OID results.

Have you got a url to the tracker issue?

cheers,

Chris

-- 
Simplistix - Content Management, Batch Processing  Python Consulting
- http://www.simplistix.co.uk
___
For more information about ZODB, see the ZODB Wiki:
http://www.zope.org/Wikis/ZODB/

ZODB-Dev mailing list  -  ZODB-Dev@zope.org
https://mail.zope.org/mailman/listinfo/zodb-dev


[ZODB-Dev] ZEORaid was Re: Restoring from repozo and reusing an index file?

2010-06-11 Thread Alan Runyan
 I suppose you could look at zeoraid.

 Hadn't thought of that, will look at it, thanks!

Anyone using ZEORaid in production?
___
For more information about ZODB, see the ZODB Wiki:
http://www.zope.org/Wikis/ZODB/

ZODB-Dev mailing list  -  ZODB-Dev@zope.org
https://mail.zope.org/mailman/listinfo/zodb-dev


Re: [ZODB-Dev] ZEORaid was Re: Restoring from repozo and reusing an index file?

2010-06-11 Thread Christian Theune
On 06/11/2010 05:50 PM, Alan Runyan wrote:
 I suppose you could look at zeoraid.

 Hadn't thought of that, will look at it, thanks!

 Anyone using ZEORaid in production?

I hope not. There's still open issues with split brain situations and a 
mysterious bug WRT oid generation that I hope to hunt down in August.

Christian

-- 
Christian Theune · c...@gocept.com
gocept gmbh  co. kg · forsterstraße 29 · 06112 halle (saale) · germany
http://gocept.com · tel +49 345 1229889 0 · fax +49 345 1229889 1
Zope and Plone consulting and development
___
For more information about ZODB, see the ZODB Wiki:
http://www.zope.org/Wikis/ZODB/

ZODB-Dev mailing list  -  ZODB-Dev@zope.org
https://mail.zope.org/mailman/listinfo/zodb-dev