Both 'iptables' and 'ip*tables-restores' sleep and wait until the lock is released if no 'wait' option. If 'wait' option is set, it wait for the amount of time instructed and stop waiting.
I think the printed message make more sense now : # time cat /etc/rules.v4 | iptables-restore -c Another app is currently holding the xtables lock; still -9s 0us time ahead to have a chance to grab the lock... .... # time cat /etc/rules.v4 | iptables-restore -c -w 2 Another app is currently holding the xtables lock. Stopped waiting after 2s. # time cat /etc/rules.v4 | ip6tables-restore -c Another app is currently holding the xtables lock; still -9s 0us time ahead to have a chance to grab the lock... .... # time cat /etc/rules.v4 | ip6tables-restore -c -w 2 Another app is currently holding the xtables lock. Stopped waiting after 2s. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to iptables in Ubuntu. https://bugs.launchpad.net/bugs/1791958 Title: iptables-restore is missing -w option Status in iptables package in Ubuntu: Confirmed Bug description: For CRIU we need to have iptables version 1.6.2 which includes the '-w' option in iptables-restore. This is a request to update iptables to 1.6.2 in 18.10 and if possible backport the necessary changes to 18.04. The CRIU project gets right now many bug reports (mostly in the combination LXD + CRIU) due to the missing '-w' option in iptables- restore. Especially as 18.04 will be around for some time it would be good to have iptables-restore available with '-w'. This is one example bug report: https://github.com/checkpoint- restore/criu/issues/551 But not only CRIU would benefit from this change. It seems also problematic with Kubernetes: https://github.com/kubernetes/kubernetes/pull/60978 So if possible, please update iptables to 1.6.2 (or backport changes) to support -w in iptables-restore. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iptables/+bug/1791958/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
