virt December 2014

virt@lists.centos.org

9 participants
8 discussions

Joining the SIG - oVirt project
by Sandro Bonazzola 08 Jan '15

08 Jan '15

Hi, I just joined the CentOS-virt call yesterday for the first time and it was a pleasure to meet you there. My name is Sandro Bonazzola[1] and I'm a member of the integration team and the release engineering manager for oVirt project[2]. oVirt is an open source alternative to VMware vSphere, and provides an excellent KVM management interface for multi-node virtualization. On each release we provide packages for Fedora and CentOS 6 and starting with the upcoming release 3.5.1 we're going to provide packages also for CentOS 7. We started looking at the CentOS virt SIG a few months ago and we finally decided to join. With me there is also David Caro (in CC), he's member of the oVirt infra and CI team and he's also in oVirt release engineering team. As discussed in the call today, a first thing we're looking at is getting live snapshot capability in qemu-kvm package provided within CentOS. Currently we're delivering qemu-kvm-rhev within oVirt repositories, taking the src.rpm from CentOS repo and rebuilding it with the rhev flag for enabling the capability. Another interesting point for us is providing a live image with oVirt pre-installed. We're now composing oVirt Live[3] iso images using CentOS 6 packages as base also if original kickstart files came from Scientific Linux. We would like to make it fully CentOS based and hopefully move to CentOS 7. We also provide oVirt Node[4] which is also based on CentOS 6 and is a small, robust operating system image using minimal resources while providing the ability to control virtual machines running upon it. Both the spins can take advantage of having packages like qemu-kvm-rhev or in some cases glusterfs or libvirt or other dependencies updates as well as other projects that may rely on the CentOS virt SIG. On the other hand, having latest oVirt RPMs within CentOS will allow CentOS and oVirt users to work with a single repository. We're now looking at CentOS site gathering info about the SIG, how to join and how to contribute. [1] https://fedoraproject.org/wiki/User:Sbonazzo [2] http://www.ovirt.org [3] http://www.ovirt.org/OVirt_Live [4] http://www.ovirt.org/Node Thanks, -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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CentOS 6 Xen 4.4.1 packages available on virt6-testing
by George Dunlap 07 Jan '15

07 Jan '15

At long last, I've got some beta CentOS 6 4.4.1 packages up on the CBS. Major updates include: * Update to Xen 4.4.1. Also includes all XSAs through 114 * Update to latest blktap 2.5 * Updated libvirt packages (1.2.10), which work well with libxl To use, add the following to a file in /etc/yum.repos.d: [virt-testing] name=CentOS-$releasever - virt-testing baseurl=http://cbs.centos.org/repos/virt6-testing/$basearch/os/ gpgcheck=0 enabled=1 Notes: * git repo with all the changes to xen can be found here: https://github.com/gwd/sig-virt-xen out/virt6/update-4.4.1-4 * The signing infrastructure is not in place, so the binaries are not signed. * xend is now disabled by default. You can enable it by running chkconfig. xend has been removed from the tree entirely in Xen 4.5, so this should (hopefully) serve as a "wake-up-call" for people to begin the transition over to xend. * A lot have things have changed -- please to test this so we can get a good idea what may have broken. -George

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Virt SIG Meeting minutes for 16 Dec 2014
by George Dunlap 17 Dec '14

17 Dec '14

Minutes Attending: imcleod, lars_kurth, gwd, kbsingh, dcaro, jonludlam Meetings over Christmas: - Skip the one on 30 Dec; do IRC meeting Jan 13th. Xen update - 4.4.1, libvirt pushed - Notes: xend disabled by default - Plan: Sign, release soon, oVirt - RHEL 7.1 will already rebuild qemu with snapshotting on - But we may want to do the qemu rebuild for 6 as well. - kbsingh: I think oVirt is fine in the sig - sandro to be maintainer, dcaro to also have access / co-maintainer FOSDEM - Probably a hackathon / dojo thing the Friday before - Further discussion to happen on centos-promo Docker update (from Lokesh) - 1.4.0 into c7-testing - working on rocket

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Virt SIG meeting minutes
by George Dunlap 16 Dec '14

16 Dec '14

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Attendees: Lars, Lokesh, George, KB (eventually) Docker update: - - Docker 1.3.1 for virt7-testing Xen update: - Xen 4.4.1 in virt6-testing - Can't do a release of xen without libvirt because libvirt depends on a specific version of libxl - Plan: update to libvirt-1.2.9 before test then release Signing - C7 we want to use the CBS signing system which isn't up yet - All SIGs will just wait to release C7 stuff until then - x4c C6 is signed with distro key, so we'll keep having Johnny sign those Target: C6 xen/libvirt beta release in mid-November, release early December C7 docker: release when sig ready C7 xen: beta maybe mid-December Mid-December: Dojo schedule - Biggest one: US in early Summer - 30 Jan before FOSDEM - ~300 people - Sponsorship? - Talk / workshop / hack session re virt sig Pre-FOSDEM dojo: - kbsingh: It would be good to have virt-sig presence at dojo before FOSDEM - gwd: I may not be able to make it; I'll try to find someone to cover me. IRC chat log: <gwd> Virt SIG meeting in 2 minutes *** jonludlam (~jonludlam(a)guest-gw.chu.cam.ac.uk) has joined channel #centos-devel [13:59] *** tazz (~gaurav(a)triband-mum-120.60.128.133.mtnl.net.in) has joined channel #centos-devel *** dominic_ (~dgeevarg(a)59.93.70.149) has quit: Quit: Leaving <pasik> hello [14:00] <gwd> OK, who have we got present? I see pasik and jonludlam [14:02] <gwd> kbsingh: You around? <gwd> lsm5? [14:04] <gwd> OK, well I guess let's get started. [14:05] *** agrimm (agrimm@nat/redhat/x-lypwfoeufylzzmdt) has joined channel #centos-devel <jonludlam> gwd, is there an agenda? [14:06] <gwd> The main agenda was updates: update on Xen, on Docker, and on the CBS. <gwd> The CBS is the main blocker for a Docker release <gwd> And really for me doing anything useful as far as a Xen update as well. [14:07] <jonludlam> I still don't have my cbs account <gwd> And quaid had asked about oVirt joining the Virt SIG as well <gwd> jonludlam: Right, I didn't realize you'd asked for one. [14:08] * gwd tries to remember the nick of the guy who was working on that... <gwd> Well the Xen status is: <gwd> * I've got Xen 4.4.1 built in the CBS (unsigned) <gwd> * It's using an "updated" blktap2.5, but I'm not sure how stable it is (needs more testind) [14:09] <jonludlam> (tbh I hadn't been pinging about it as I've had to work on other things recently...) <gwd> * And before we can do a proper release, I'd need to rebuild libvirt <jonludlam> gwd, is it using the dkms blktap module? <jzb> Evolution: ping <Evolution> jzb: pong [14:10] <gwd> I think the kernel probably is, not positive. <jzb> Evolution: where can I find minutes from last week's meeting? <jzb> Evolution: Atomic SIG meeting, I mean, in case that was vague. :-) <gwd> jonludlam: Any reason for asking? :-) <Evolution> everything should be at -> http://www.centos.org/minutes/ [14:11] <jonludlam> gwd, the dkms module is quite old, and I've had issues using it under ubuntu. The newer kernel module source can't be built out of tree though <gwd> Yes, the whole blktap thing is something which needs to be sorted out. [14:12] <jonludlam> given we're providing a new kernel, it might make sense to have the in-tree patches in the kernel <jonludlam> gwd, totally agree <pasik> i think the current linux 3.10 kernel in xen4c6 is based on some citrix patches <pasik> for blktap2.5 [14:13] <gwd> That would make sense -- I haven't had time to actually get to look at the kernel package and see what's in it. <pasik> i remember some discussions/emails with David Vrabel about those patches <jzb> Evolution: found, thx <jonludlam> pasik, might be worth refreshing the patches - we've done a lot of testing on them recently [14:14] <pasik> jonludlam: ok, good to know <pasik> jonludlam: can you point to a git tree with the latest patches? <jonludlam> pasik, not sure - I'll have a look <pasik> jonludlam: thanks! [14:15] <jonludlam> https://github.com/xenserver/linux-3.x.pg/tree/master/master I believe *** telex (teletype(a)freeshell.de) has quit: Remote host closed the connection [14:17] <gwd> pasik: You haven't tested the 4.4.1 patches in virt6-testing, have you? [14:18] *** telex (teletype(a)freeshell.de) has joined channel #centos-devel <kbsingh> gwd: here now <kbsingh> +1 for prepatching the kernel for needed support, dkms is never worked for me in prod [14:20] <gwd> kbsingh: OK -- I've just done a status update for Xen (basically not much update since last time, except that I found a pretty nasty bug upstream and fixed it) <kbsingh> on the CBS update : [14:21] <pasik> gwd: hmm, i *think* i did test the rpms you linked <pasik> gwd: but i'm not totally sure. i've been way too busy with other things <pasik> gwd: i'll test again to be sure :) <gwd> pasik: Sure. :_) <kbsingh> lots of progress, MerlinTHP is working on closing up the lookaside binary sources import script, and I am working on the gitblit update for git.centos.org - having those two things done will allow prettymuch the entire workflow to move from srpms to git <lsm5> gwd: yup [14:22] <pasik> kbsingh: any eta? <kbsingh> w.r.t signing packages, we have a sign process setup, need to sync with the koji guys and workout a release process. <kbsingh> pasik: 2 weeks is a good eta to plan against <gwd> C6 isn't going to use the CBS signing anyway, since the existing C6 packages use the CentOS signing key. <lsm5> sorry about the delay, Re: docker, we have 1.3.1 up, nothing else to update :\ [14:23] <kbsingh> we'll likely have chunk of the work done for the next buildsys meeting on Monday coming, and i'd give it another week for people to break i <kbsingh> gwd: if we can find a migration path, would you prefer it went through cbs ( c6 ) <lsm5> lsm5: and i'm back at RH if that matters :) *** chorrell (~chorrell(a)72.15.63.49) has joined channel #centos-devel <kbsingh> lsm5: we;ll try not holding that against you <lsm5> :) [14:24] <gwd> kbsingh: That would be fine with me, but I don't know any of the details there... *** arielb (~arielb@fedora/arielb) has joined channel #centos-devel <kbsingh> gwd: ok, maybe we can thrash out the detalis on the virt-list. it will involve shipping a xen that requires: centos-release-xen <version>; which then has the new key <kbsingh> and have the centos-release-xen conflict with the older xen <kbsingh> gwd: in terms of targets, are we looking for a 4.4 into c6 or c7 now ? [14:26] <kbsingh> as in, what are we doing first ? *** BRLX (~Thunderbi(a)rtr.ak-p.at) has quit: Quit: BRLX [14:27] <gwd> kbsingh: Well I thought changing one thing at a time would be good. :-) So I'm aiming at 4.4 in c6 <kbsingh> cool <gwd> Also, updating to 4.4 in c6 doesn't require kernel changes; just xen & libvirt packages *** BRLX (~Thunderbi(a)rtr.ak-p.at) has joined channel #centos-devel <kbsingh> second question i had was for jonludlam i guess, there was talk of updating to a 3.14 kernel, is that still on the cards ? to better align with upstream expectations [14:28] <gwd> kbsingh: Do we want to update to 3.14 in c6? We were definitely planning on doing a kernel update for c7 <kbsingh> if there is a good reason to, we can update in c6 as well as c7 - specially if its going to mean only having to maintain one kernel tree [14:29] <jonludlam> I have no particular opinion on kernel version <jonludlam> David V might though [14:30] <gwd> jonludlam: I can ask the Linux Xen crowd what they think is a good option <kbsingh> maybe something to thrash out a bit then, for now for 4.4 into c6, if its not a blocker then lets not bring it to the agenda [14:31] <jonludlam> gwd, sounds like a good idea <kbsingh> col [14:32] <kbsingh> cool even <gwd> OK, so the plan is: First c6 xen+libvirt; then possibly c6 kernel update; then c7 everything. <gwd> Anything else for Xen? <pasik> libvirt status? [14:33] <pasik> for xen4.4 <gwd> pasik: I was planning on updating it to whatever the most recent release. <gwd> But I haven't had a chance to look at it. <pasik> ok [14:35] <pasik> libvirt obviously needs to be built and tested before we can push the xen 4.4 update to c6 [14:36] <gwd> Yes, that's basically the delay at this point... *** smerrill-offline (~smerrill(a)ec2-174-129-193-80.compute-1.amazonaws.com) is now known as smerrill <gwd> lsm5: Anything you're blocked on for a c7 docker release, other than the cbs being set up? [14:37] <kbsingh> do we want to include the upstream libvirt people as well ? <kbsingh> DV: ping <lsm5> gwd: no blockers <gwd> lsm5: Cool. *** mbrysa (mbrysa@nat/redhat/x-toigkxrcipgtvkod) has quit: Quit: Leaving [14:39] <gwd> quaid also mentioned oVirt potentially wanting to do join the Virt SIG; I presume to have a re-build of qemu with some extra features enabled <gwd> Is there anything to discuss about that? *** blip (~dewey@unaffiliated/blip) has quit: Ping timeout: 258 seconds <gwd> kbsingh: Also, I have in the last meeting minutes something about dojos and sponsorship? Was there an action item there for anyone? [14:40] <kbsingh> unsure, but there are a few ovirt people on the virt-list now, so we can ping there *** mattgriffin (~textual(a)99-181-54-51.lightspeed.rcsntx.sbcglobal.net) has joined channel #centos-devel <kbsingh> gwd: we have a dojo on the day before Fosdem, I think virt-sig should do something there, either a hack session or a talk session <gwd> kbsingh: quaid responded to my e-mail announcing the Virt SIG meeting on centos-virt <gwd> Hrm <gwd> fosdem> It's looking somewhat likely that I won't be able to make it to FOSDEM next year, due to some personal stuff I have to sort out in the US around that time. [14:41] <kbsingh> gwd: ok, we should then try and find someone who can cover ? [14:43] <kbsingh> brb <kbsingh> back [14:44] <gwd> kbsingh: Yes, that would be good. [14:45] <gwd> kbsingh: Let me see if I can find someone to get involved. [14:46] <kbsingh> thanks *** chandankumar (chandankum@nat/redhat/x-kxxugjygxkcyqqlh) has quit: Quit: Leaving <gwd> OK, anything else to cover? <kbsingh> the cloudsig is starting to finally get off the ground, do we want to cross polinate with them a bit ? [14:47] <kbsingh> maybe have someone from virtsig hangout in their meetings and ask them to come along here as well <pasik> jonludlam: would you like to email about the blktap2.5 kernel patches once you figure it out? <gwd> kbsingh: They're doing stuff like openstack, right? <jonludlam> pasik, if there's anything actually to do, I will [14:48] <kbsingh> gwd: yeah, openstack and eucalyptus looks to be what they are starting with, then cloudstack and opennebula miht comealong later. <jonludlam> it looks like the recent activity on the patch in our tree has been to do with very large scalability <jonludlam> which might not be of much interest <pasik> jonludlam: thanks! [14:49] <pasik> jonludlam: well, at least all the bugfixes are of interest :) <jonludlam> pasik, for sure :-) [14:50] <gwd> kbsingh: Yes. I'll see if I can start lurking on their meetings. <jonludlam> talking of other SIGs, what needs to happen to kick off the ocaml SIG? [14:51] <gwd> Just real quick -- any other business we need to cover before we close the Virt SIG meeting? <kbsingh> jonludlam: not much, we just need to find a couple of problem definitions that sig will try and solve, then propose it and bob's your uncle *** lvv (~loganaden(a)RNT-ENG2.dhcp.mu.afrinic.net) has quit: Quit: lvv <kbsingh> gwd: not from me. <jonludlam> is 'we need it for xapi' a sufficient problem definiton? [14:52] <jonludlam> I'm sure there are more problems it solve too... :-) [14:53] <kbsingh> jonludlam: thats a good place to start from [14:54] <kbsingh> jonludlam: lets pickup on that over email, i need to rebase over to another call <jonludlam> sure *** santana (9f99820a(a)gateway/web/freenode/ip.159.153.130.10) has joined channel #centos-devel <gwd> Great, thanks everyone! [14:55] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQEcBAEBCgAGBQJUa15LAAoJELIVx6fHhBvt6R0H/29i5r7sTPChWEa6r4d7LfC9 /nkEwTP/K/eYmcfLy5tZZr09dQWyrSoQnbVK4mudTiy7s0+I4EEj8+8bSTCDWuNV CgUUB0vP18O2Zw7VMbevaM64MgmFNn/TwHyOOIJyiXQZWAdPVMfDHpz2chnV3jzC aS1E16RPHEuxppnteZXmfdbRrXQ+CM3uI5AodpHDvk1kN10OciHjNXknk8ok82nz AGrgH0BmxYyu+BxRgAqivIO65YlIQvLIKHwphElY33rXTFkucH59o6gMmTWOR4DE Y5olalxIrFvIHEWDh8BY/Jbytvewf3KO0Jpw+2YBHi2xzDAzYhJyXPPb/z3/hnY= =5z5s -----END PGP SIGNATURE-----

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Reminder: CentOS Virt SIG meeting tomorrow
by George Dunlap 15 Dec '14

15 Dec '14

Hey all! Just a reminder, the CentOS Virt SIG meeting is tomorrow, 2pm, on #centos-devel (freenode IRC). Agenda items I've got: * Xen 4.4.1 for C6 update (finally) - Got xen 4.4.1 w/ updated XenServer blktap working, + libvirt - Other changes to consider: xend off by default, revert "favor qdisk" change * oVirt joining SIG? * Meetings over Christmas - proposal: Cancel phone meeting 29 Dec; do regular IRC meeting on 12 January Anything else? -George

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xen-c6 fails to boot
by Bob Ball 09 Dec '14

09 Dec '14

Hi all, Following instructions at http://wiki.centos.org/QaWiki/Xen4 to setup Xen on CentOS 6.4. Unfortunately after installing Xen and modifying the boot line there is a kernel panic during the boot process causing the host to enter a reboot loop. Console log attached. [<ffffffff81575480>] panic+0xc4/0x1e1 [<ffffffff81054836>] find_new_reaper+0x176/0x180 [<ffffffff81055345>] forget_original_parent+0x45/0x2c0 [<ffffffff81107214>] ? task_function_call+0x44/0x50 [<ffffffff810555d7>] exit_notify+0x17/0x140 [<ffffffff81057053>] do_exit+0x1f3/0x450 [<ffffffff81057305>] do_group_exit+0x55/0xd0 [<ffffffff81057397>] sys_exit_group+0x17/0x20 [<ffffffff815806a9>] system_call_fastpath+0x16/0x1b xen-4.2.2-23.el6.centos.alt.x86_64 kernel-3.4.53-8.el6.centos.alt.x86_64 title xen root (hd0,0) kernel /xen.gz dom0_mem=256M,max:256M loglvl=all guest_loglvl=all module /vmlinuz-3.4.53-8.el6.centos.alt.x86_64 ro root=/dev/mapper/vg_cs-lv_root rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=uk LANG=en_US.UTF-8 rd_LVM_LV=vg_cs/lv_root rd_Np module /initramfs-3.4.53-8.el6.centos.alt.x86_64.img This issue was found in an automated environment that actually uses Dave Scott's Xen 4.4 branch (http://xenbits.xen.org/djs/centos-xen-4-4/) however in trying to diagnose the issue we found that the base xen-c6 combination failed in the same way. Note also that the last successful run (which was a while ago due to a configuration issue) used the same xen and kernel as the now-failing environments. Both the failing and passing environments are using xen-4.4.0-2.el6.x86_64 and kernel-3.4.53-8.el6.centos.alt.x86_64. Is the current combination of xen/kernel in xen-c6 working for others at the moment? Are there any thoughts on what might be causing this regression? Bob

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Virt SIG meeting minutes 2 Dec 2014
by George Dunlap 02 Dec '14

02 Dec '14

Below are the meeting minutes from today's meeting. Let me know if there are any additions or corrections. -George --- Attendees: Lokesh, George, Sandro, Lars. Agenda: - Docker update - Xen update - CBS (Can't do w/o KB) - oVirt questions Docker update (Lokesh): - Docker 1.3.2 in centos virt7-testing - "Not giving much trouble in CentOS" - going to update Docker registry to 0.9.0 - Tested from people on Fedora - Docker has automated test suite, failed for weird reasons - RHEL QE Xen (George): - Xen 4.4.1 with blktap 2.5 0.92 in virt6-testing - Found qdisk bug, need to backport - Now writing automated testing system - Then need to update & test libvirt - Hopefully by then we'll have a more functional CBS CBS: - Signing? - Build from git repos? - George has git.c.o access, but Lokesh doesn't - George got something from git.c.o built w/ koji back in October - But a lot of necessary repos are not on git.c.o yet. - And at that time there was no way for non-Centos folks to upload new tarballs Events: Dojo before FOSDEM - Need to know if it's still finalized - XenProject will make sure there's someone at the dojo representing Xen oVirt: - Want: re-build of RHEL qemu package with snapshotting (IIRC) - Sandro & David Caro probably to get involved - Sandro: Release manager, Integration - David: Release engineer, &c - Main delay: oVirt 3.5 release (now done)

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Reminder: CentOS Virt SIG call today, 2pm GMT
by George Dunlap 02 Dec '14

02 Dec '14

Just a reminder to everyone, we've got our bi-weekly Virt SIG meeting today. It's on a phone bridge this time; e-mail me if you want the dial-in information. Lars, will you be hosting the call, or shall I? -George

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virt December 2014