[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
This bug was fixed in the package lxc - 0.7.4.2-3ubuntu6 --- lxc (0.7.4.2-3ubuntu6) oneiric; urgency=low * Add lxc-start-ephemeral by Robert Collins (LP: #807351) * Add a --quit-on-stop arg to lxc-monitor for use by lxc-start-ephemeral. * Modify lxcguest.conf to clear out /var/run (LP: #819621) * Fix a bug in lxc-ps when cgroup-bin is not mounted. * Modify lxc-ps to accept '-n name' and support '--' to separate options for ps. (LP: #820720) -- Serge Hallyn serge.hal...@ubuntu.com Wed, 03 Aug 2011 19:48:11 -0500 ** Changed in: lxc (Ubuntu) Status: Confirmed = Fix Released -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
This bug was fixed in the package lxc - 0.7.4.2-3ubuntu6 --- lxc (0.7.4.2-3ubuntu6) oneiric; urgency=low * Add lxc-start-ephemeral by Robert Collins (LP: #807351) * Add a --quit-on-stop arg to lxc-monitor for use by lxc-start-ephemeral. * Modify lxcguest.conf to clear out /var/run (LP: #819621) * Fix a bug in lxc-ps when cgroup-bin is not mounted. * Modify lxc-ps to accept '-n name' and support '--' to separate options for ps. (LP: #820720) -- Serge Hallyn serge.hal...@ubuntu.com Wed, 03 Aug 2011 19:48:11 -0500 ** Changed in: lxc (Ubuntu) Status: Confirmed = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
updated script that handles slower startup and doesn't leak LXC_DIRs ** Attachment added: lxc-start-aufs https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+attachment/2251192/+files/lxc-start-aufs ** Attachment removed: a script to bring up and remove aufs layered containers https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+attachment/2196930/+files/lxc-start-aufs -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
updated script that handles slower startup and doesn't leak LXC_DIRs ** Attachment added: lxc-start-aufs https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+attachment/2251192/+files/lxc-start-aufs ** Attachment removed: a script to bring up and remove aufs layered containers https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+attachment/2196930/+files/lxc-start-aufs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
Note to whomever merges / rewrites to C /whatever - this needs SIGTERM/SIGINT/SIGQUIT handling to unmount the bind mounts, tempfs mount, aufs mount and rm -rf the temp directories. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
I discussed adding this to lxc-start with Serge on IRC, but dimishing returns - the shell script is possibly better/simpler : I'll leave this as a proof of concept for others to migrate into C if desired. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
I discussed adding this to lxc-start with Serge on IRC, but dimishing returns - the shell script is possibly better/simpler : I'll leave this as a proof of concept for others to migrate into C if desired. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
** Attachment added: a script to bring up and remove aufs layered containers https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+attachment/2196930/+files/lxc-start-aufs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
Updated the attachment with some docs. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
Thanks. It's an interesting and useful idea. Note that, in oneiric, you can do something similar using LVM snapshots. Once you have an LVM container (automation of which is trivial but not yet automated by a tool in the package :) you can lxc-clone -s -o basecontainer -n tmpcontainer lxc-start -n tmpcontainer which takes about 3 seconds altogether. When done, destroy tmpcontainer. So one alternative workflow for this would be to extend lxc-clone to support aufs as an alternative to lvm, using your model. So then start an aufs container would be a two-step process, i.e. lxc-clone --aufs -o basecontainer -n tmpcontainer lxc-start -n tmpcontainer -d lxc-destroy -n tmpcontainer It's an extra step at startup, but OTOH it allows tmpcontainer to more easily persist, sort of like schroot sessions. You could then also script the steps into a single 'lxc-aufsstart'. Does that sound sufficiently useful to you, or do you see advantages to extending lxc-start to have a --aufs option to emulate your script? ** Changed in: lxc (Ubuntu) Status: New = Confirmed ** Changed in: lxc (Ubuntu) Importance: Undecided = Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 807351] Re: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers
On Sat, Jul 9, 2011 at 9:16 AM, Serge Hallyn 807...@bugs.launchpad.net wrote: Thanks. It's an interesting and useful idea. Note that, in oneiric, you can do something similar using LVM snapshots. Once you have an LVM container (automation of which is trivial but not yet automated by a tool in the package :) you can lxc-clone -s -o basecontainer -n tmpcontainer lxc-start -n tmpcontainer which takes about 3 seconds altogether. When done, destroy tmpcontainer. Yes, one of the key differences though is that writes to aufs never hit disk; they don't need to block on fsync and so forth: we're running postgresql, so this can make quite a difference to IO contention. So one alternative workflow for this would be to extend lxc-clone to support aufs as an alternative to lvm, using your model. So then start an aufs container would be a two-step process, i.e. lxc-clone --aufs -o basecontainer -n tmpcontainer lxc-start -n tmpcontainer -d lxc-destroy -n tmpcontainer It's an extra step at startup, but OTOH it allows tmpcontainer to more easily persist, sort of like schroot sessions. You could then also script the steps into a single 'lxc-aufsstart'. Does that sound sufficiently useful to you, or do you see advantages to extending lxc-start to have a --aufs option to emulate your script? I'm completely agnostic about how and where it lives ;) We'd like the functionality though. -Rob -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807351 Title: it would be cool to be able to clone an lxc container onto aufs for test runs - ephemeral containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/807351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
