Perl 6 - the future is here, just unevenly distributed

IRC log for #fuel, 2014-10-20

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All times shown according to UTC.

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01:15 ianunruh I'm having an awful time with rabbitmq closing the connection to my openstack services
01:15 ianunruh they're all on the same LAN segment, I've tried restarting rabbitmq.. not sure what's up
01:17 ianunruh My logs are mainly filled with "failed to publish errors" with stacktraces containing "error: [Errno 32] Broken pipe"
01:17 ianunruh eventually it will reconnect and work
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04:30 ianunruh starting nova-api resolves that problem.. so odd
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06:09 mihgen ianunruh: it's https://bugs.launchpad.net/mos/+bug/1371723. I hope this package contains the fix, but not sure - http://fuel-repository.mirantis.com/fwm/5.1.1/centos/os/x86_64/Packages/python-oslo-messaging-1.3.0-fuel5.1.mira4.noarch.rpm. Will try to clarify.
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07:41 sc-rm kaliya: I have one instance running with ubuntu 14.04. I have done some changes to it, but when doing a snapshot, the snapshot does not contain the changes.
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08:01 kaliya sc-rm: hi. Do you take the snap with a command?
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08:11 sc-rm kaliya: nope, I did it from horizon
08:14 sc-rm kaliya: “#fsfreeze -f / && sleep 30 && fsfreeze -u /“ on the instance did the trick
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10:32 klonhj Hi all ! In fuel 5.0.1, what is the primary-controller's
10:45 kaliya klonhj: sorry, are you talking about controller roles?
10:47 hyperbaba_ Hi there, I've noticed that in 5.1 ceph is a little bit slower than in 5.0. Does anybody else noticed the same behavior?
10:47 kaliya hyperbaba_: did you perform benchmarks?
10:48 hyperbaba_ kalya: yes. Bonnie++ said around 120MB for block input. On 5.0 on the same hardware I've got around 160MB
10:49 kaliya we've upgraded to 0.80
10:49 hyperbaba_ kaliya: of course there is a zero other activity on the cloud during tests...
10:49 kaliya but this seems a specific ceph issue
10:50 hyperbaba_ kaliya: You also noticed slowdown?
10:51 kaliya hyperbaba_: we noticed also other issues related to this ceph version...
10:52 hyperbaba_ kaliya: I hope issues are not show stoppers?
10:54 kaliya hyperbaba_: sorry?
10:54 hyperbaba_ kaliya: are issues critical for production use? For example complete data loss or similiar
10:54 kaliya hyperbaba_: no
10:55 hyperbaba_ kaliya: thank godness.
10:56 kaliya hyperbaba_: this might be relevant to be aware of, if you're using ceph https://bugs.launchpad.net/fuel/+bug/1373096
10:56 hyperbaba_ kaliya: Is there anyway to increase mtu on bonded interface which i use for all the treffic exept admin? MTU of 9000 on that bridge would be better for block transfers for ceph. Also it will allow mtu of 1500 for instances without fragmentation.
10:57 kaliya hyperbaba_: I'll ask the team and I will document this
10:57 hyperbaba_ kaliya: MiroslavAnashkin told me about this . I've patched the system with this option and new oslo package he gave me
11:02 hyperbaba_ kaliya: of course this large MTU can only be used when switch is supporiting it. I think all the switches can do that today. Even switches 10 years old
11:11 evg hyperbaba_: not all really support. What is the problem to set mtu for bond?
11:11 hyperbaba_ evg: duno where to set it upp :(
11:13 hyperbaba_ evh: this "ovs switch" is a still mistery for me
11:14 evg hyperbaba_: do you want to change it on already  deployed env?
11:14 hyperbaba_ evg: yes
11:14 hyperbaba_ evg: to benchmark ceph again to se the gains/losses
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11:16 evg hyperbaba_: just for benchmarking? I think you have to change it on bond device via "ip link set" command.
11:16 evg hyperbaba_: not in ovs I mean
11:17 hyperbaba_ evg: are eth1-3 (which are in bond) going to inherit that setting?
11:19 evg hyperbaba_: I'm really not sure, need to test
11:20 evg hyperbaba_: supposedly they should...
11:20 hyperbaba_ evg: As i hinted from your question , is it possible to setup mtu at deployment stage?
11:20 evg hyperbaba_: yes, sure
11:21 hyperbaba_ evg: ip link list shows a lot of br- interfaces and other. Which i need to change?
11:23 evg hyperbaba_: as i understand you wanted to change it on bond interface you use for ceph
11:24 hyperbaba_ evg: but i do not know what interface is that. Only with the bond in it's name is br-ovs-bond0
11:27 evg hyperbaba_: here is about changing mtu for deployment https://answers.launchpad.net/fuel/+question/251704
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12:48 hyperbaba_ I have heterogenous environment of cpu's on my compute nodes. What is the best value for libvirt_cpu_model option to allow live migration (kvm64 does not work for windows machines)
12:55 hyperbaba_ What's going on? Everybody left the channel ?
12:56 kaliya hyperbaba_: I don't think that matters if hosts where live-migration is done has the same libvirt_cpu_model
12:56 hyperbaba_ kaliya: but i use host-setting
12:57 hyperbaba_ kaliya: and if you have different cpu-s, you can "jump" to extended feature set cpu, but can't go back.
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13:35 kaliya hyperbaba_: we discussed internally, and that option seems not that important as storage availability
13:35 kaliya hyperbaba_: did you find some specific issue?
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13:37 hyperbaba_ kaliya: Did not. Just a bit of slowdown. But i was monitoring the ceph lists also and this 0.80 is suppose to be faster.  Even tried to increase the mtu on br-storage interface. No gain in speed but a lot of gain in CS.
13:37 kaliya hyperbaba_: thanks for reporting
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13:54 Dr_Drache kaliya, I decided I want 6.0 this week
13:55 Dr_Drache :P
13:57 merdoc Dr_Drache: you not alone (%
13:57 kaliya hi guys
13:57 merdoc kaliya: morning (%
13:57 kaliya Dr_Drache merdoc no 6.0 this week unfortunately
13:58 kaliya we're hardly working on it, and importing Juno. you can try the community builds in the meanwhile...
13:59 Dr_Drache I know, :P
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18:18 Dr_Drache blah
18:18 Dr_Drache it's soo late in germany
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