Re: [ovirt-users] Live Migration / Snapshots- CentOS 6.5

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--_000_5F9E965F5A80BC468BE5F40576769F098C53909Bexchange21_--

There we go, sorry about that! Ill give these a test then. Thanks for the help On Sat, Jul 5, 2014 at 7:39 AM, Karli Sjöberg <Karli.Sjoberg@slu.se> wrote:
Den 5 jul 2014 16:22 skrev Brad Bendy <brad.bendy@gmail.com>:
Haha, yeah never have been a Fedora fan, and nothing has changed. Is the only big feature im missing out on is snapshots? From what I can tell, and in my testing, everything else seems to work. Was deploying GlusterFS but without the live migration to another host that is somewhat defeated.
VM live migration works, live _disk_ migration does not.
Only way to get that is with RHEL really then?
No, as I earlier pointed out, there is a place you can get the packages you need for CentOS: http://jenkins.ovirt.org/view/All/job/qemu-kvm-rhev_create-rpms_el6/lastStab...
You'll have to download- and force install them over the already installed versions of those packages on all Hosts and then it'll work.
Though, next time there are updates, yum will update from the standard repos and it just stops working again until you repeat the procedure.
/K
On Sat, Jul 5, 2014 at 7:05 AM, Karli Sjöberg <Karli.Sjoberg@slu.se> wrote:
Den 5 jul 2014 15:57 skrev Brad Bendy <brad.bendy@gmail.com>:
If I use Fedora will "everything" work? I had numerous issues, IIRC I could not even get the ovirtmgmt switch to install and a few other things. What version of Fedora do you recommend then?
None:) We switched long ago to CentOS and have never looked back, even with these issues. Not worth the headache that is Fedora.
/K
Ill do another install and give that a whirl again.
Thanks!
On Fri, Jul 4, 2014 at 10:33 PM, Karli Sjöberg <Karli.Sjoberg@slu.se> wrote:
Den 5 jul 2014 07:04 skrev Brad Bendy <brad.bendy@gmail.com>:
Hi,
Ive seeing conflicting info with what version of qemu rpms are needed to do live migration under CentOS. It appears the stock ones will not work and the RHEV ones are required. All the mailing list post I see are from 3-4 months ago, so not sure.
Im getting VDSGenericException: VDSErrorException: Failed to SnapshotVDS, error = Snapshot failed, code = 48 (Failed with error SNAPSHOT_FAILED and code 48)
I also saw this thread: http://comments.gmane.org/gmane.linux.centos.general/138593
Ive been having issues getting those to install, but before I spent to much more time I wanted to really see if I was on the right track.
Is there a better OS choice? I first started trying with Fedora 19 and 20 and has major issues, went to CentOS 6.5 and this is the first and only issue so far ive ran into.
Thanks! _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Well, going with Fedora would at least get you the snapshots working, if I remember correctly, but that's not something you run in production. As you said, "major issues".
For CentOS, you need "special" versions of certain packages, since RedHat wants you to pay for RHEV, they have chosen to cripple the standard packages so those features won't work: http://lists.ovirt.org/pipermail/devel/2014-June/007735.html
And here you can find the packages you need:
http://jenkins.ovirt.org/view/All/job/qemu-kvm-rhev_create-rpms_el6/lastStab...
/K

Is normal behavior a outage when a snapshot occurs? Ive got the rhev builds installed but when I take a snap im getting well over two minutes of downtime, on a VM with zero usage. The VM goes into "pause" state then, I guess the snapshot is a copy of the entire VM? I have not got a second host up with those rhev build to see the behavior when disk migrating Thanks On Sat, Jul 5, 2014 at 7:51 AM, Brad Bendy <brad.bendy@gmail.com> wrote:
There we go, sorry about that! Ill give these a test then. Thanks for the help
On Sat, Jul 5, 2014 at 7:39 AM, Karli Sjöberg <Karli.Sjoberg@slu.se> wrote:
Den 5 jul 2014 16:22 skrev Brad Bendy <brad.bendy@gmail.com>:
Haha, yeah never have been a Fedora fan, and nothing has changed. Is the only big feature im missing out on is snapshots? From what I can tell, and in my testing, everything else seems to work. Was deploying GlusterFS but without the live migration to another host that is somewhat defeated.
VM live migration works, live _disk_ migration does not.
Only way to get that is with RHEL really then?
No, as I earlier pointed out, there is a place you can get the packages you need for CentOS: http://jenkins.ovirt.org/view/All/job/qemu-kvm-rhev_create-rpms_el6/lastStab...
You'll have to download- and force install them over the already installed versions of those packages on all Hosts and then it'll work.
Though, next time there are updates, yum will update from the standard repos and it just stops working again until you repeat the procedure.
/K
On Sat, Jul 5, 2014 at 7:05 AM, Karli Sjöberg <Karli.Sjoberg@slu.se> wrote:
Den 5 jul 2014 15:57 skrev Brad Bendy <brad.bendy@gmail.com>:
If I use Fedora will "everything" work? I had numerous issues, IIRC I could not even get the ovirtmgmt switch to install and a few other things. What version of Fedora do you recommend then?
None:) We switched long ago to CentOS and have never looked back, even with these issues. Not worth the headache that is Fedora.
/K
Ill do another install and give that a whirl again.
Thanks!
On Fri, Jul 4, 2014 at 10:33 PM, Karli Sjöberg <Karli.Sjoberg@slu.se> wrote:
Den 5 jul 2014 07:04 skrev Brad Bendy <brad.bendy@gmail.com>: > > Hi, > > Ive seeing conflicting info with what version of qemu rpms are > needed > to do live migration under CentOS. It appears the stock ones will > not > work and the RHEV ones are required. All the mailing list post I see > are from 3-4 months ago, so not sure. > > Im getting VDSGenericException: VDSErrorException: Failed to > SnapshotVDS, error = Snapshot failed, code = 48 (Failed with error > SNAPSHOT_FAILED and code 48) > > I also saw this thread: > http://comments.gmane.org/gmane.linux.centos.general/138593 > > Ive been having issues getting those to install, but before I spent > to > much more time I wanted to really see if I was on the right track. > > Is there a better OS choice? I first started trying with Fedora 19 > and > 20 and has major issues, went to CentOS 6.5 and this is the first > and > only issue so far ive ran into. > > Thanks! > _______________________________________________ > Users mailing list > Users@ovirt.org > http://lists.ovirt.org/mailman/listinfo/users
Well, going with Fedora would at least get you the snapshots working, if I remember correctly, but that's not something you run in production. As you said, "major issues".
For CentOS, you need "special" versions of certain packages, since RedHat wants you to pay for RHEV, they have chosen to cripple the standard packages so those features won't work: http://lists.ovirt.org/pipermail/devel/2014-June/007735.html
And here you can find the packages you need:
http://jenkins.ovirt.org/view/All/job/qemu-kvm-rhev_create-rpms_el6/lastStab...
/K

While I have never tested or used this feature myself, I'm pretty sure this is not normal behaviour, this shouldn't take that long on an idle vm, unless something else puts your hardware under heavy load? Am 06.07.2014 08:17, schrieb Brad Bendy:
Is normal behavior a outage when a snapshot occurs? Ive got the rhev builds installed but when I take a snap im getting well over two minutes of downtime, on a VM with zero usage.
-- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen

This is a multi-part message in MIME format. --------------050300040906080907000804 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit On 07/05/2014 04:39 PM, Karli Sjöberg wrote:
Den 5 jul 2014 16:22 skrev Brad Bendy <brad.bendy@gmail.com>:
Haha, yeah never have been a Fedora fan, and nothing has changed. Is the only big feature im missing out on is snapshots? From what I can tell, and in my testing, everything else seems to work. Was deploying GlusterFS but without the live migration to another host that is somewhat defeated.
VM live migration works, live _disk_ migration does not.
Only way to get that is with RHEL really then?
No, as I earlier pointed out, there is a place you can get the packages you need for CentOS: http://jenkins.ovirt.org/view/All/job/qemu-kvm-rhev_create-rpms_el6/lastStab...
You'll have to download- and force install them over the already installed versions of those packages on all Hosts and then it'll work.
Though, next time there are updates, yum will update from the standard repos and it just stops working again until you repeat the procedure.
/K
Just add "exclude=qemu-kvm*" in /etc/yum.conf so yum will leave them allone Kind regards, Jorick Astrego Netbulae --------------050300040906080907000804 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> <br> <div class="moz-cite-prefix">On 07/05/2014 04:39 PM, Karli Sjöberg wrote:<br> </div> <blockquote cite="mid:5F9E965F5A80BC468BE5F40576769F098C53909B@exchange2-1" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <p dir="ltr"><br> Den 5 jul 2014 16:22 skrev Brad Bendy <a class="moz-txt-link-rfc2396E" href="mailto:brad.bendy@gmail.com"><brad.bendy@gmail.com></a>:<br> ><br> > Haha, yeah never have been a Fedora fan, and nothing has changed. Is<br> > the only big feature im missing out on is snapshots? From what I can<br> > tell, and in my testing, everything else seems to work. Was deploying<br> > GlusterFS but without the live migration to another host that is<br> > somewhat defeated.</p> <p dir="ltr">VM live migration works, live _disk_ migration does not.</p> <p dir="ltr">> Only way to get that is with RHEL really then?</p> <p dir="ltr">No, as I earlier pointed out, there is a place you can get the packages you need for CentOS:<br> <a class="moz-txt-link-freetext" href="http://jenkins.ovirt.org/view/All/job/qemu-kvm-rhev_create-rpms_el6/lastStableBuild/">http://jenkins.ovirt.org/view/All/job/qemu-kvm-rhev_create-rpms_el6/lastStableBuild/</a></p> <p dir="ltr">You'll have to download- and force install them over the already installed versions of those packages on all Hosts and then it'll work.</p> <p dir="ltr">Though, next time there are updates, yum will update from the standard repos and it just stops working again until you repeat the procedure.</p> <p dir="ltr">/K</p> <br> </blockquote> Just add "exclude=qemu-kvm*" in /etc/yum.conf so yum will leave them allone <br> <br> Kind regards, <br> Jorick Astrego<br> Netbulae<br> </body> </html> --------------050300040906080907000804--

Thought I was smooth sailing, guess not. When I did this clone would I need to reset the Sanlock UUIDs? Im getting a bunch of weird errors when going to activate a gluster storage domain to the datacenter. 2014-07-09 07:24:40,211 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStoragePoolVDSCommand] (org.ovirt.thread.pool-6-thread-6) [5338d906] Command CreateStoragePoolVDSCommand(HostName = phx-kvm-01, HostId = dfcb3d3d-32c0-40ec-8c96-6abb6f0589b1, storagePoolId=00000002-0002-0002-0002-0000000003e7, storagePoolName=Default, masterDomainId=cd39b203-e95a-4580-8070-eb283cce0e16, domainsIdList=[cd39b203-e95a-4580-8070-eb283cce0e16], masterVersion=5) execution failed. Exception: VDSErrorException: VDSGenericException: VDSErrorException: Failed to CreateStoragePoolVDS, error = Cannot acquire host id: ('cd39b203-e95a-4580-8070-eb283cce0e16', SanlockException(22, 'Sanlock lockspace add failure', 'Invalid argument')), code = 661 2014-07-09 07:24:40,215 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStoragePoolVDSCommand] (org.ovirt.thread.pool-6-thread-6) [5338d906] FINISH, CreateStoragePoolVDSCommand, log id: 30f5b525 2014-07-09 07:24:40,216 ERROR [org.ovirt.engine.core.bll.storage.AddStoragePoolWithStoragesCommand] (org.ovirt.thread.pool-6-thread-6) [5338d906] Command org.ovirt.engine.core.bll.storage.AddStoragePoolWithStoragesCommand throw Vdc Bll exception. With error message VdcBLLException: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to CreateStoragePoolVDS, error = Cannot acquire host id: ('cd39b203-e95a-4580-8070-eb283cce0e16', SanlockException(22, 'Sanlock lockspace add failure', 'Invalid argument')), code = 661 (Failed with error AcquireHostIdFailure and code 661) Any insight into this? On Mon, Jul 7, 2014 at 12:14 AM, Jorick Astrego <j.astrego@netbulae.eu> wrote:
On 07/05/2014 04:39 PM, Karli Sjöberg wrote:
Den 5 jul 2014 16:22 skrev Brad Bendy <brad.bendy@gmail.com>:
Haha, yeah never have been a Fedora fan, and nothing has changed. Is the only big feature im missing out on is snapshots? From what I can tell, and in my testing, everything else seems to work. Was deploying GlusterFS but without the live migration to another host that is somewhat defeated.
VM live migration works, live _disk_ migration does not.
Only way to get that is with RHEL really then?
No, as I earlier pointed out, there is a place you can get the packages you need for CentOS: http://jenkins.ovirt.org/view/All/job/qemu-kvm-rhev_create-rpms_el6/lastStab...
You'll have to download- and force install them over the already installed versions of those packages on all Hosts and then it'll work.
Though, next time there are updates, yum will update from the standard repos and it just stops working again until you repeat the procedure.
/K
Just add "exclude=qemu-kvm*" in /etc/yum.conf so yum will leave them allone
Kind regards, Jorick Astrego Netbulae
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
participants (4)
-
Brad Bendy
-
Jorick Astrego
-
Karli Sjöberg
-
Sven Kieske