[Bug 985489] Re: nova-compute stops processing compute.$HOSTNAME occasionally on libvirt

2012-09-20 Thread Johannes Erdfelt
** Summary changed:

- nova-compute stops processing compute.$HOSTNAME occasionally
+ nova-compute stops processing compute.$HOSTNAME occasionally on libvirt

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Title:
  nova-compute stops processing compute.$HOSTNAME occasionally on
  libvirt

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[Bug 985489] Re: nova-compute stops processing compute.$HOSTNAME occasionally on libvirt

2012-09-20 Thread Johannes Erdfelt
** Summary changed:

- nova-compute stops processing compute.$HOSTNAME occasionally
+ nova-compute stops processing compute.$HOSTNAME occasionally on libvirt

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https://bugs.launchpad.net/bugs/985489

Title:
  nova-compute stops processing compute.$HOSTNAME occasionally on
  libvirt

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[Bug 838581] Re: Failures in db_pool code: 'NoneType' object has no attribute '_keymap' or not returning rows.

2012-07-19 Thread Johannes Erdfelt
I know this is an old bug, but I'm pretty confident now that the problem
isn't in db_pool, just that the increased concurrency exposed bugs in
nova. This was complicated by bugs in SQLAlchemy (since fixed) and in
MySQLdb (which I've opened up a bug report and supplied a patch) that
masked the real bug in nova.

The 'NoneType' object has no attribute '_keymap' exception is most
likely caused by a bug in SQLAlchemy that has been fixed for a while. I
was only able to reproduce this with older versions of SQLAlchemy,
whereas upgrading to a recent version results in the
ResourceClosedError: This result object does not return rows. It has
been closed automatically. exception.

The exception is generated by SQLAlchemy, but is ultimately a bug in
MySQLdb, where it doesn't always raise an exception correctly when it is
received by the server. For some reason, with subtle changes to the
query, errors can happen at different points in the protocol and MySQLdb
doesn't handle it correctly if the error is received when calling
mysql_store_result().

I opened up this bug report and attached a patch to fix the bug in
MySQLdb:

https://sourceforge.net/tracker/?func=detailaid=3546166group_id=22307atid=374932

After upgrading SQLAlchemy and fixing MySQLdb, you'll see the real
problem, which is likely this exception:

OperationError: Deadlock found when trying to get lock; try restarting
transaction

At least that was the case with the quota reservation code, tracked by
this bug:

https://bugs.launchpad.net/nova/+bug/1026709

I strongly suspect these other cases are similar bugs with incorrect
locking since at least the fixed_ip code uses with_lockmode as well.

** Bug watch added: SourceForge.net Tracker #3546166
   http://sourceforge.net/support/tracker.php?aid=3546166

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Title:
  Failures in db_pool code: 'NoneType' object has no attribute '_keymap'
  or not returning rows.

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[Bug 838581] Re: Failures in db_pool code: 'NoneType' object has no attribute '_keymap' or not returning rows.

2012-07-19 Thread Johannes Erdfelt
I know this is an old bug, but I'm pretty confident now that the problem
isn't in db_pool, just that the increased concurrency exposed bugs in
nova. This was complicated by bugs in SQLAlchemy (since fixed) and in
MySQLdb (which I've opened up a bug report and supplied a patch) that
masked the real bug in nova.

The 'NoneType' object has no attribute '_keymap' exception is most
likely caused by a bug in SQLAlchemy that has been fixed for a while. I
was only able to reproduce this with older versions of SQLAlchemy,
whereas upgrading to a recent version results in the
ResourceClosedError: This result object does not return rows. It has
been closed automatically. exception.

The exception is generated by SQLAlchemy, but is ultimately a bug in
MySQLdb, where it doesn't always raise an exception correctly when it is
received by the server. For some reason, with subtle changes to the
query, errors can happen at different points in the protocol and MySQLdb
doesn't handle it correctly if the error is received when calling
mysql_store_result().

I opened up this bug report and attached a patch to fix the bug in
MySQLdb:

https://sourceforge.net/tracker/?func=detailaid=3546166group_id=22307atid=374932

After upgrading SQLAlchemy and fixing MySQLdb, you'll see the real
problem, which is likely this exception:

OperationError: Deadlock found when trying to get lock; try restarting
transaction

At least that was the case with the quota reservation code, tracked by
this bug:

https://bugs.launchpad.net/nova/+bug/1026709

I strongly suspect these other cases are similar bugs with incorrect
locking since at least the fixed_ip code uses with_lockmode as well.

** Bug watch added: SourceForge.net Tracker #3546166
   http://sourceforge.net/support/tracker.php?aid=3546166

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Title:
  Failures in db_pool code: 'NoneType' object has no attribute '_keymap'
  or not returning rows.

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[Bug 948595] Re: Default api-paste.ini does not properly route metadata requests to /1.0

2012-03-07 Thread Johannes Erdfelt
The reason why I ask is because I don't even see a 1.0 EC2 API doc
anywhere. It's not listed here:

http://aws.amazon.com/archives/Amazon-EC2

and the latest version isn't 1.0. All of the versions fit -mm-dd
format so 1.0 seems like it's a mistake not supposed to be in the list.

I'm not an expert on the EC2 API but to me it looks like the inclusion
in the list is a mistake and not the absence in the paste config.

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Title:
  Default api-paste.ini does not properly route metadata requests to
  /1.0

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[Bug 948595] Re: Default api-paste.ini does not properly route metadata requests to /1.0

2012-03-07 Thread Johannes Erdfelt
Ok, I missed that you testes EC2 itself and saw 1.0 on there

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Title:
  Default api-paste.ini does not properly route metadata requests to
  /1.0

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[Bug 948595] Re: Default api-paste.ini does not properly route metadata requests to /1.0

2012-03-07 Thread Johannes Erdfelt
The reason why I ask is because I don't even see a 1.0 EC2 API doc
anywhere. It's not listed here:

http://aws.amazon.com/archives/Amazon-EC2

and the latest version isn't 1.0. All of the versions fit -mm-dd
format so 1.0 seems like it's a mistake not supposed to be in the list.

I'm not an expert on the EC2 API but to me it looks like the inclusion
in the list is a mistake and not the absence in the paste config.

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https://bugs.launchpad.net/bugs/948595

Title:
  Default api-paste.ini does not properly route metadata requests to
  /1.0

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[Bug 948595] Re: Default api-paste.ini does not properly route metadata requests to /1.0

2012-03-07 Thread Johannes Erdfelt
Ok, I missed that you testes EC2 itself and saw 1.0 on there

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Title:
  Default api-paste.ini does not properly route metadata requests to
  /1.0

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[Bug 948595] Re: Default api-paste.ini does not properly route metadata requests to /1.0

2012-03-06 Thread Johannes Erdfelt
Is the bug that 1.0 doesn't route anywhere or that 1.0 is in the list in
the first place? I can't find any documentation on what a 1.0 API should
be.

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Title:
  Default api-paste.ini does not properly route metadata requests to
  /1.0

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[Bug 948595] Re: Default api-paste.ini does not properly route metadata requests to /1.0

2012-03-06 Thread Johannes Erdfelt
Is the bug that 1.0 doesn't route anywhere or that 1.0 is in the list in
the first place? I can't find any documentation on what a 1.0 API should
be.

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Title:
  Default api-paste.ini does not properly route metadata requests to
  /1.0

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[Bug 799008] Re: glance creates zero-length images in local file store on Ubuntu oneiric

2011-06-21 Thread Johannes Erdfelt
FWIW, I ran into this same problem on Debian Squeeze and WebOb 0.9.8. I
upgraded to WebOb 1.0.8 and it fixed the problem for me.

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Title:
  glance creates zero-length images in local file store on Ubuntu
  oneiric

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