January 2016 - Devel - oVirt List Archives

TransactionSupport during command validation
by Tomer Saban 13 Jan '16

13 Jan '16

Hi, I wanted to draw your attention to something I found out while fixing a bug involving the use of transactions in commands. When calling a command using getBackend().runAction() when another transaction is open, by default the command will become part of the open transaction because by default CommandBase specifies TransactionScopeOption.Required as the default 'scope'. Unfortunately, validation function(formerly CanDoAction()) will not be aware of the opened transaction. This get be problematic in cases where the validation() method check things that are fixed in the opened transaction and not committed yet. For example, In my case I'm using the AddVdsGroupCommand which creates a new cluster (In an open tranasction) and then, calls the AddCpuProfileCommand which creates a default cpu profile. The default cpu profile validation() check then, Check if the cluster exists which fails because it's not part of the opened transaction. They way to over come this is to add the validation() method to the open transaction by adding @ValidateSupportsTransaction annotation on the command. The associated part of the code in CommandBase(line 817) : """ if (!isValidateSupportsTransaction()) { transaction = TransactionSupport.suspend(); } """ isValidateSupportsTransaction() - Checks that the annotation exists and if it's not it suspends the TransactionSupport. FYI, Tomer

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Non Responding Treatment not working?
by Roy Golan 13 Jan '16

13 Jan '16

I have seen 2 diferent installations not moving a host to non responsive. One host was failing to install and stayed in "Installing" and on my setup a host just stays in "Connecting" and the treatment doesn't kick in. Anyone seen this?

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Request permissions for ovirt-host-deploy maintainership
by Sandro Bonazzola 12 Jan '16

12 Jan '16

Hi, ovirt-host-deploy access lists have as unique member Alon Bar-Lev which recently left the project. Since the python part is otopi based and I already had worked on it on the past, I'm stepping in, proposing myself as maintainer for that project. Thanks, -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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oVirt 3.6.2 RC2 build starting
by Sandro Bonazzola 12 Jan '16

12 Jan '16

Fyi oVirt products maintainers, An oVirt build for an official release candidate is going to start right now. If you're a maintainer for any of the projects included in oVirt distribution and you have changes in your package ready to be released please: - bump version and release to be GA ready - tag your release within git (implies a GitHub Release to be automatically created) - build your packages within jenkins / koji / copr / whatever - verify all bugs on MODIFIED have target release and target milestone set. -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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Vdsm sync 5/1 summary after short delay
by Yaniv Bronheim 12 Jan '16

12 Jan '16

(fromani, nsoffer, ybronhei, alitke) - Removing xmlrpc for good - who should accept it? where do we stand with full jsonrpc client ? (we didn't get to any conclusions and said that we'll reraise this topic next week with pioter) - Moving from nose to pytest - generally good approach to achieve. It requires some changes in current testlib.py code. must be an item for next major version (nir already managed to run most of the tests with it, and stated few gaps) - Exception patches - still on progress, please review ( https://gerrit.ovirt.org/48868) - python3 effort to cover all asyncProc usage, and allowing utils import without having python3-cpopen - https://gerrit.ovirt.org/51421 https://gerrit.ovirt.org/49441 . still under review We didn't take notes during that talk, so if I forgot to mention something I apologize. Feel free to reply and raise it Greetings, -- *Yaniv Bronhaim.*

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oVirt Community Newsletter, December 2015
by Mikey Ariel 11 Jan '16

11 Jan '16

Happy 2016! December was a great closing month for 2015, with more FOSDEM updates, software releases, technical articles, and some new meetups! Check out the newsletter for all the updates. ----------------- Software Releases ----------------- oVirt 3.6.2 First Release Candidate is now available for testing http://lists.ovirt.org/pipermail/announce/2015-December/000224.html Async release for ovirt-hosted-engine-ha is now available http://lists.ovirt.org/pipermail/announce/2015-December/000223.html oVirt 3.6.1 Final Release is now available http://lists.ovirt.org/pipermail/announce/2015-December/000220.html oVirt 3.5 won't receive further updates http://lists.ovirt.org/pipermail/announce/2015-December/000213.html oVirt 3.5.6 Final Release is now available http://lists.ovirt.org/pipermail/announce/2015-December/000212.html ---------------- In the Community ---------------- oVirt goes to FOSDEM 2016 - Devroom, Stand, Social Event http://lists.ovirt.org/pipermail/users/2016-January/037091.html All oVirt-related sessions at FOSDEM 2016 https://fosdem.org/2016/schedule/event/virt_iaas_host_lifecycle_content_man… https://fosdem.org/2016/schedule/event/virt_iaas_reactive_processing_ovirt/ https://fosdem.org/2016/schedule/event/virt_iaas_sweep_away_the_garbage/ https://fosdem.org/2016/schedule/event/managing_ceph_through_cinder_using_o… https://fosdem.org/2016/schedule/event/virt_iaas_ovirt_hyperconverge/ https://fosdem.org/2016/schedule/event/virt_iaas_containers_and_virtualizat… Cockpit 0.87 is released, contains candidate bits for oVirt node https://lists.fedorahosted.org/archives/list/cockpit-devel%40lists.fedoraho… A Puzzle Called oVirt Node Next http://dummdida.tumblr.com/post/135713197955/a-puzzle-called-ovirt-node-next Global view of oVirt (and friends) meetups http://ovirt.meetup.com/ ------------------------------------ Deep Dives and Technical Discussions ------------------------------------ How to fix oVirt error: “Failed to attach Storage Domain [ ] to Data Center [ ]” https://bobcares.com/blog/how-to-fix-ovirt-error-failed-to-attach-storage-d… oVirt VM “unknown status” solved http://matthewxspencer.com/2015/12/17/196/ How we setup high availability in oVirt cloud system https://bobcares.com/blog/how-we-setup-high-availability-in-ovirt-cloud-sys… Converting Debian/Ubuntu to oVirt http://andrewwippler.com/2015/12/18/converting-debianubuntu-to-ovirt/ How to backup and restore oVirt engine https://bobcares.com/blog/how-to-backup-and-restore-ovirt-engine/ oVirt Integration with Satellite/Foreman https://www.runlevelone.net/wordpress/index.php/2015/12/31/ovirt-integratio… Building an open source Cloud Hosting solution using oVirt (open virtualization) https://bobcares.com/blog/building-a-cost-effective-cloud-hosting-solution-… Converting VMs for oVirt http://andrewwippler.com/2015/12/11/converting-vms-for-ovirt/ New article series: oVirt Virtualization http://blog.vikki.in/ovirt-virtualization-part-1/ Planning the Deployment of oVirt http://andrewwippler.com/2015/12/04/planning-the-deployment-of-ovirt/ -- Mikey Ariel Community Lead, oVirt www.ovirt.org "To be is to do" (Socrates) "To do is to be" (Jean-Paul Sartre) "Do be do be do" (Frank Sinatra) Mobile: +420-702-131-141 IRC: mariel / thatdocslady Twitter: @ThatDocsLady

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Installing the oVirt Node Next Early-Preview
by Fabian Deutsch 11 Jan '16

11 Jan '16

Hey, finally we've got continous builds of [oVirt Node Next](http://www.ovirt.org/Node/4.0) in [oVirt's jenkins instance](http://jenkins.ovirt.org/user/fabiand/my-views/view/Node.next/job… which are consumable by Anaconda. **Note:** This is an early preview, the basic oVirt bit's (vdsm) are there and you should be able to add such a host to Engine. But updates are not yet working, and if they were, then they'd be broken. You want to try it? Read on. ## Starting the anaconda installer Independently if you continue with a VM or a bare metal server, the host you will use - needs at least 3GB of free space - is connected to the internet ### Using a VM The safe way to try the oVirt Node Next is to install it into a VM, this is quite easy: qemu-img create -f qcow2 dst.img 20G qemu-system-x86_64 \ -enable-kvm \ -m 2048 \ -cdrom http://jenkins.ovirt.org/job/fabiand_boo_build_testing/lastSuccessfulBuild/… \ -hda dst.img \ -serial stdio \ -net nic -net user,hostfwd=tcp::19090-:9090 Now select _"Interactive installation"_ and wait for the anaconda installer to come up, this can take a while, as data is downloaded from the internet. ### Using bare metal (easy - iPXE ISO) Trying oVirt node Next on bare metal is not much more difficult. 1. Download our pre-built PXE ISO: <http:> 2. Write the `ovirt-ipxe.iso` onto a CD-ROM, DVD, USB, virtual media 3. Boot your bare metal server using the previously created media Now select _"Interactive installation"_ and wait for the anaconda installer to come up, this can take a while, as data is downloaded from the internet. ### Using bare metal (medium - CentOS 7 ISO + kernel arguments) Trying oVirt Node Next on bare metal is not much more difficult. 1. Grab a CentOS 7 (Node Next is based on CentOS 7) netinstall `boot.iso` from a [mirror close to you](http://mirror.centos.org/centos-7/7/os/x86_64/images/boot.iso). 2. Boot the `boot.iso` on your bare metal server and wait for ISOLINUX bootloader 3. Select the default entry and append the following arguments: `inst.ks=https://gerrit.ovirt.org/gitweb?p=ovirt-node-ng.git;a=blob_plain;f=docs/kickstart/minimal-kickstart.ks;hb=HEAD inst.updates=http://jenkins.ovirt.org/job/fabiand_boo_build_testing/lastSuc… inst.stage2=http://mirror.centos.org/centos-7/7/os/x86_64/` Now wait for the anaconda installer to come up, this can take a while, as data is downloaded from the internet. # Performing the installation Once anaconda is up you need to answer a few questions 1. Select your prefered language and continue 2. On the next page, select your keyboard layout and timezone 3. Select the disk to be used - Enter the spoke (the thing which opens when you click on the disk icon), and select the disk to use. Sometimes you need to deselect and select the disk icon again. **Note: Leave the partitioning to automatic. If you are brave you can do your own partitioning layout, but ensure to use LVM thin-provisioning.** 4. Now you should have answered all necessary questions, and can proceed by hitting `Continue` 5. The installation is started, use the time to at least set a _root_ user password. **Note: The installation can take a while, because now the installation image is pulled from our jenkins instance (~500MB).** 6. Once the installation is done and you've set a password, you can reboot the host and it should be ready to use. The host can now be added to Engine. **Note:** In case you encounter issues, enable permissive mode on the host by calling `setenforce 0` ## Trying Cockpit This is an early preview with cockpit installed. But currently cockpit is not enabled and the firewall prevents access. Yes, it will be fixed. Until then: Perform the following steps to take a look at cockpit: 1. Use the VM installation above 2. After installation, log intot the VM 3. Start cockpit: `systemctl start cockpit` 4. Stop firewalld: `systemctl stop firewalld` 5. Browse to <http:> (on the host, not inside the VM), this request will be forwarded to port 9090 inside the VM, where cockpit is running. ## Feedback Is this working for you or not? Could you install Node? Could you add Node? Could you browse Cockpit? Or did your host explode? Let us know what you think. ## Next steps The next big step is to enable updates. On behalf of the Node Team - fabian

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oVirt 3.6.2 RC2 merge / tag / bugzilla reminder
by Sandro Bonazzola 11 Jan '16

11 Jan '16

All stable branch maintainers, please make sure to - merge all relevant open bugs until Tuesday morning 11:00 AM TLV time. - https://bugzilla.redhat.com/buglist.cgi?quicksearch=target_milestone%3A3.6.… Every package build (i.e oVirt product) - please make sure every bug in MODIFIED has the right Target Release and Target Milestone. A Target release should state the version of the package you're building and should include the same version you used for the tag you just used for this build. (e.g. for ovirt-engine, tag: ovirt-engine-3.6.2.5, tr: 3.6.2.5) -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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oVirt 3.6.2 RC2 build planned
by Simone Tiraboschi 11 Jan '16

11 Jan '16

Fyi oVirt developers, An oVirt build is planned for this Tuesday 11:00 AM, please make sure to backport any open patches to the stable branch for review by the stable branch maintainers. Here's a list of open blockers: https://bugzilla.redhat.com/buglist.cgi?quicksearch=target_milestone%3A3.6.…

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[VDSM] exceptions cleanup
by Nir Soffer 11 Jan '16

11 Jan '16

Hi all, I started the exceptions topic[1], trying to: - gather all exceptions in vdsm.exception - make all exceptions inherit from same base class - add exceptions for virt errors, currently managed in vdsm.define (unfinished) - add missing tests for the exception logic Having exceptions for all api errors, we can simplify error handling in virt so you can raise an exception in any level, and have one top level error handler that knows how to create an error response. See Piotr patch [2] adding such handler. One issue raised by Pitor was ensuring that we don't have duplicate error codes. We have tests/main.py, checking that storage exceptions and gluster exceptions use unique error codes. Another issue raised by Pitor is having single location for vdsm error codes, instead of duplicating the information in both vdsm and engine. Actually this info is duplicated also in hosted engine setup and agent, and maybe in other places. I think the best solution for this is to generate the java module used by engine from vdsm.exception. Python applications can depend on vdsm-api package, and import vdsm.exception. Future changes: - Merge storage_exception, into vdsm.exception - Move vdsm.exception into api pacakge - Cover all exceptions in the unique error code tests - Replace the error response dict in all verbs with raising an exception - Dropping the error handler in vdsm.storage.dispatcher. The first 4 patches in [1] should be ready for merge. Thoughts? [1] https://gerrit.ovirt.org/#/q/status:open+project:vdsm+branch:master+topic:e… [2] https://gerrit.ovirt.org/#/c/51549/2/vdsm/rpc/Bridge.py Nir

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