Bug 6962 – ebtables locking is necessary?

Bug 6962 - ebtables locking is necessary?

Summary:

ebtables locking is necessary?

Status:	RESOLVED FIXED

Product:	Nimbus
Component:	Workspace control
Version:	2.3
Platform:	PC Linux

Importance:	P3 normal
Target Milestone:	2.4
Assigned To:	Tim Freeman

URL:
Keywords:

Depends on:
Blocks:	6981
	Show dependency tree / graph

Reported:	2010-02-02 11:04 by Tim Freeman
Modified:	2010-04-12 14:19 (History)

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note

You need to log in before you can comment on or make changes to this bug.

Description From Tim Freeman 2010-02-02 11:04:41

See the user report below, Kyle Fransham finds that using flock to encase the
ebtables adjustment script reduced ebtables errors with dmesg "Wrong nr. of
counters requested"

http://lists.globus.org/pipermail/workspace-user/2010-January/001099.html

http://lists.globus.org/pipermail/workspace-user/2010-January/001101.html


Thanks Kyle!

------- Comment #1 From Tim Freeman 2010-03-12 11:33:13 -------

Should test ourselves and fold a fix into 2.4 if possible.

------- Comment #2 From Tim Freeman 2010-04-12 14:19:18 -------

Thanks again Kyle.

This patch enables an flock-based exclusive write-lock around ebtables
adjustments which Kyle reports reduces "kernel doesn't support a certain
ebtables extension" errors.

http://github.com/nimbusproject/nimbus/commit/6794454ea1b9d0bf6644b4ff9486c306c107cfc4