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oVirt 4.0 Reporting
by aleksey.maksimov＠it-kb.ru 31 Oct '16

31 Oct '16

Hello oVirt guru`s! In the first half of 2016 was the following information: http://lists.ovirt.org/pipermail/users/2016-June/040549.html Are there any news about the built-in oVirt 4.0 reporting mechanism? Is there any chance that we will see reports in the oVirt web console?

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when engine broken
by 张余歌 31 Oct '16

31 Oct '16

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Fwd: Re: Local and Shared storage in same datacenter
by Mike 30 Oct '16

30 Oct '16

Hi Barak, Op 30-10-2016 om 11:19 schreef Barak Korren: >> While I understand that this makes having local storage impossible, I >> believe there is a use case to have local storage in a shared storage >> datacenter. >> Consider the following: >> I have a few applications that require 1 milli second latency and at most 2 >> milli second. >> That is not consistenly achievable with shared storage, to that end I added >> flash storage to a few hypervisors. >> About 5% of my servers require this and are not that resource hungry to >> require a dedicated physical server. >> That same 5% also has no requirement to be migrated if a host fails. >> > > I mentioned this in another thread already, please look into the VDSM > scratchpad hook. It will allow you to attach (files on) the local SSDs > (as disks) to VMs when those VMs start up. It will perfectly meet your > use case if you only need to keep the data on the SSD while the VM is > up. > > The data should not be lost if we power down the VM. If the data is lost during a host failure we have options to restore the data, but do not want to do it on a weekly/monthly basis. The scratchpad is useful for other options we are exploring, thanks!

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Persist files node-ng
by Jonas Israelsson 28 Oct '16

28 Oct '16

How do I persist files on a ng-node ? I forgot to add some needed network-configuration during install. While these manually added config files seem to survive a reboot, updating the node via the web-ui will wipe them. TIA Jonas

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gluster setup in ovirt
by Thing 28 Oct '16

28 Oct '16

Hi, I have 3 machines imported into ovirt 4.0.4 just to do storage. I have no storage setup. I am a bit confused, can I add new storage from scratch via ovirt? ie picking mount points (I have /gv1 so set on each) or do I create the gluster replicated setup manually on each of the three nodes first? and import "ready made"?

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messed up gluster attempt
by Thing 28 Oct '16

28 Oct '16

Hi, So was was trying to make a 3 way mirror and it reported failed. Now I get these messages, On glusterp1, ========= [root@glusterp1 ~]# gluster peer status Number of Peers: 1 Hostname: 192.168.1.32 Uuid: ef780f56-267f-4a6d-8412-4f1bb31fd3ac State: Peer in Cluster (Connected) [root@glusterp1 ~]# gluster peer probe glusterp3.graywitch.co.nz peer probe: failed: glusterp3.graywitch.co.nz is either already part of another cluster or having volumes configured [root@glusterp1 ~]# gluster volume info No volumes present [root@glusterp1 ~]# ========= on glusterp2, ========= [root@glusterp2 ~]# systemctl status glusterd.service ● glusterd.service - GlusterFS, a clustered file-system server Loaded: loaded (/usr/lib/systemd/system/glusterd.service; disabled; vendor preset: disabled) Active: active (running) since Fri 2016-10-28 15:22:34 NZDT; 5min ago Main PID: 16779 (glusterd) CGroup: /system.slice/glusterd.service └─16779 /usr/sbin/glusterd -p /var/run/glusterd.pid --log-level INFO Oct 28 15:22:32 glusterp2.graywitch.co.nz systemd[1]: Starting GlusterFS, a clustered file-system server... Oct 28 15:22:34 glusterp2.graywitch.co.nz systemd[1]: Started GlusterFS, a clustered file-system server. [root@glusterp2 ~]# gluster volume info No volumes present [root@glusterp2 ~]# gluster peer status Number of Peers: 2 Hostname: 192.168.1.33 Uuid: 0fde5a5b-6254-4931-b704-40a88d4e89ce State: Sent and Received peer request (Connected) Hostname: 192.168.1.31 Uuid: a29a93ee-e03a-46b0-a168-4d5e224d5f02 State: Peer in Cluster (Connected) [root@glusterp2 ~]# ========== on glusterp3, ========== [root@glusterp3 glusterd]# systemctl status glusterd.service ● glusterd.service - GlusterFS, a clustered file-system server Loaded: loaded (/usr/lib/systemd/system/glusterd.service; disabled; vendor preset: disabled) Active: active (running) since Fri 2016-10-28 15:26:40 NZDT; 1min 16s ago Main PID: 7033 (glusterd) CGroup: /system.slice/glusterd.service └─7033 /usr/sbin/glusterd -p /var/run/glusterd.pid --log-level INFO Oct 28 15:26:37 glusterp3.graywitch.co.nz systemd[1]: Starting GlusterFS, a clustered file-system server... Oct 28 15:26:40 glusterp3.graywitch.co.nz systemd[1]: Started GlusterFS, a clustered file-system server. [root@glusterp3 glusterd]# gluster volume info No volumes present [root@glusterp3 glusterd]# gluster peer probe glusterp1.graywitch.co.nz peer probe: failed: glusterp1.graywitch.co.nz is either already part of another cluster or having volumes configured [root@glusterp3 glusterd]# gluster volume info No volumes present [root@glusterp3 glusterd]# gluster peer status Number of Peers: 1 Hostname: glusterp2.graywitch.co.nz Uuid: ef780f56-267f-4a6d-8412-4f1bb31fd3ac State: Sent and Received peer request (Connected) [root@glusterp3 glusterd]# =========== How do I clean this mess up? thanks

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gluster how to setup a volume across 3 nodes via ovirt
by Thing 27 Oct '16

27 Oct '16

Hi, I have 3 gluster nodes running, ====== [root@glusterp1 ~]# gluster peer status Number of Peers: 2 Hostname: 192.168.1.33 Uuid: 0fde5a5b-6254-4931-b704-40a88d4e89ce State: Peer in Cluster (Connected) Hostname: 192.168.1.32 Uuid: ef780f56-267f-4a6d-8412-4f1bb31fd3ac State: Peer in Cluster (Connected) ====== I have a 900gb partition on each of the three nodes ready to go, formatted xfs. However when I go into host---> storage devices it says gv_1-lvgv1 is already in use and "create brick" is greyed out. So how do I get "create brick" un-greyed? The partition isnt mounted, just setup and xfs'd ready for use. Or am I better to set it up via the CLI on glusterp1? I assume I can then import it into ovirt for use?

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power management configuration.
by Thing 27 Oct '16

27 Oct '16

So far from reading it appears this only applies to "proper" servers? ie without a iLo card there is nothiing to do?

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host gaga and ovirt cannt control it.
by Thing 27 Oct '16

27 Oct '16

Ok, I have struggled with this for 2 hours now, glusterp2 and the ovirt server are basically not talking at all. I have rebooted both, I dont know how many times. Reading via google there seems to be no fix for this bar a manual hack of the ovirt server's database to delete the host glusterp2? or it it re-install from scratch time? If I have to re-install from scratch, is it best to go back a version of ovirt say to 3.6?

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fakevdsm templates per datacenter
by joost＠familiealbers.nl 27 Oct '16

27 Oct '16

Hi All, i have two ovirt / fakevdsm questions. I am using fakevdsm to test my ovirt 4.0.5 engine. I have a somewhat awkward setup where i have a relatively large amount of dc's. I cannot get nfs master domain to work from the api. The api code is solid and is used on a ovirt-engine 3.5 production cluster. When creating the nfs storage domain i have no issues (it is created as id (00000-00000 more zeros here......) but when i try to attach it to a dc it fails. I am not sure this is an ovirt of fakevdsm issue. When i manually add the nfs storage domain it does get created which is somewhat worrying. My real aim would be to run 500 dc's with 2 hosts and around 5 vms. Not being able to use the nfs storage master domain is one of the issues. To work around this i decided to try and create 1000 dcs with a single host using local storage. Allthough this works it looks like the hosts and vms within the dc's are actually not having their own storage pool. In our prod environment we run at a much lower scale serveral dc's with shared gluster storage (shared between the two hosts in the cluster) This is considered per dc its own storage pool. In my tests when reaching dc,cluster, host 249 things fail, this is likely because of the value of 'maxnumberofhostsinstoragepool'. I would expect this to be bound to the dcs and not the overall server. In short i expect each dc to be able to run 249 hosts as each dc is its own storage pool? Similarly when i look at the ovirt ui some hosts actually show they are running the total amount of running vms. Again i am not sure if i am correct in assuming each dc is its own storage pool. Finally. As this setup is somewhat awkward i would like to tweak the diverse flags in ovirt engine to be more relaxed about obtaining data from the hosts and storage domains. I believe ovirt engine now checks every 3 seconds the host but i am guessing i can live with every 60 seconds for example, the same would apply for the storage part. what i am not sure about though is if there is a golden ratio between these config items. I.e. there is vdsRefreshRate, if i set this to 60 instead of 3 do i need to also change the vdsTimeout value which is set to 180 by default? sorru for the lenght of this message. the most critical items are. Should i worry about not being eable to create an nfs master domain or is this a fakevdsm thing Why are my dcs, for someone reason related to the main storage pool or am i right in thinking a dc + cluster +host with local storage, is its own storage pool? Thanks you so much.

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