#ceph IRC Log

Index

IRC Log for 2012-09-07

Timestamps are in GMT/BST.

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[0:16] <dmick> looks like teuthology-lock works again
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[0:30] <wido_> congrats on DreamObjects!
[0:30] <wido_> I'm on the list for a beta ;)
[0:35] <dmick> woohoo!
[0:52] <nhmlap> wido_: nice! :)
[0:53] <wido_> We are gearing up here as well with a nice Ceph setup behind CloudStack
[0:53] <nhmlap> wido_: Is that going well?
[0:54] <wido_> nhmlap: Yes, I'm putting a lot of effort into CloudStack 4.0, not all Ceph related
[0:54] <wido_> to get that out of the door
[0:54] <nhmlap> wido_: what OS are you using for ceph in that setup?
[0:54] <wido_> Ubuntu 12.04
[0:54] <nhmlap> Cool
[0:55] <wido_> dmick: Did it work out today with CS?
[0:55] <dmick> no
[0:56] <dmick> but I didn't try the complete thing
[0:56] <dmick> I finally did manage to get it running from source
[0:56] <dmick> the last problem was getting the connector in the right place; I ended up throwing it in the tomcat ... bin/, I think
[0:56] <dmick> and finally got the system up. I did not try to provision anything yet
[0:57] <wido_> dmick: Ok, I'm working on 4.0 RC1 right now
[0:57] <dmick> I was making sure I understood that 3.0.2 had no way forward
[0:57] <wido_> Let me know how RBD works out
[0:57] <dmick> and making sure the Ceph Centos RPMs worked (they do)
[0:57] <dmick> do I *really* need an NFS server, or can I use local files?
[0:58] <wido_> dmick: No, you can turn on local storage for System VMs
[0:58] <wido_> in the Global Configuration
[0:59] <wido_> and then you should only add a RBD primary storage
[0:59] <wido_> make sure though you run libvirt 0.10.0
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[1:14] <dmick> ok; thanks
[1:14] <dmick> I hope to get back to that soon
[1:14] <dmick> things keep piling up :)
[1:15] <dmick> wido_: we did finally put in your doc, I guess you saw; thanks for that too
[1:15] <wido_> dmick: Yes, noticed it. I'll update it soon with some more information
[1:17] <joshd> btw wido_, cloning is ready (other than docs) in the master branch if you want to start testing and thinking about how to integrate it with cloudstack
[1:18] <joshd> it may involve changing the libvirt storage pool to create images with layering enabled
[1:18] <wido_> joshd: Nice! I'll start playing with that. A refactor of the storage layer in CloudStack is needed, but that is being worked on
[1:19] <joshd> cool, that's good to hear
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[1:57] <joao> sage, sagewk, just got home; was completely unable to get to IRC all day because it's blocked on the campus; looking at wip-mon-gv now
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[6:11] <dmick> sage, you wouldn't happen to be around, would you?
[6:11] <dmick> or sagelap, sagewk?
[6:12] <elder> Apparently not.
[6:12] <elder> And I'm only here for a minute...
[6:13] <dmick> looking at a teuthology run that claims a SHA1 that I cannot find in github at all
[6:13] <elder> What is it?
[6:13] <dmick> ca7fb8381633225272cd4477a76f441680c31419
[6:13] <dmick> (and this is the ceph sha1, not the kernel)
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[6:14] <elder> That's a ceph branch
[6:14] <elder> rather commit.
[6:14] <elder> It's a merge.
[6:14] <dmick> dammit
[6:14] <elder> {2002} elder@speedy-> git show ca7fb8381633225272cd4477a76f441680c31419
[6:14] <elder> commit ca7fb8381633225272cd4477a76f441680c31419
[6:14] <elder> Merge: 2266876 0c78a03
[6:14] <elder> Author: John Wilkins <john.wilkins@inktank.com>
[6:14] <elder> Date: Tue Sep 4 17:17:07 2012 -0700
[6:14] <elder> Merge branch 'master' of github.com:ceph/ceph
[6:14] <dmick> sigh, yes, I was out of date again
[6:15] <dmick> ty
[6:15] <elder> np
[6:15] <dmick> sadly, its build output seems to have gone away. it's one that has a broken ceph-osd coredump
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[6:25] <elder> Talk to you tomorrow.
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[17:06] <sagelap> joao: take a look at teh just-pushed wip-mon-gv for the improved approach
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[17:53] <sagelap> joshd: re: librbd discard, these may need to get backported to argonaut too: b2d6ea7feaf326a8745b3f566349e5b86fdaf36f a3ad98a3eef062e9ed51dd2d1e58c593e12c9703
[17:54] <sagelap> hmm, which makes me wonder if we have a fsx test in the suite that actually triggers/ed that bug?
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[18:05] <elder> Taking my dog to the vet. I expect to be back in time for the stand up meeting, but if I'm not there, that's why.
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[18:48] <SpamapS> Doh, I hate when nick collisions reverse my palindrome
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[19:04] <amatter> Morning all. I'm running into a problem adding an additional monitor to an existing cluster. I've added others with out trouble, but now getting the following:
[19:04] <amatter> root@rmi-orem-ceph1-mds2:~# ceph mon getmap -o /tmp/monmap
[19:04] <amatter> got latest monmap
[19:04] <amatter> root@rmi-orem-ceph1-mds2:~# ceph auth get mon. -o /tmp/monkey
[19:04] <amatter> exported keyring for mon.
[19:04] <amatter> root@rmi-orem-ceph1-mds2:~# ceph-mon -i d --mkfs --monmap /tmp/monmap --keyring /tmp/monkey --mon-data=/var/lib/ceph/mon/ceph-d
[19:04] <amatter> ceph-mon: error decoding monmap /tmp/monmap: buffer::end_of_buffer
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[19:57] <nhmlap> mikeryan: fyi I talked to Carl about memory performance on the quad socket interlagos boxes and we'll probably try to look at a similar box later today.
[19:59] <mikeryan> nhmlap: ok, "look at" in what context?
[20:00] <nhmlap> mikeryan: check bios settings for interleaving, memory speed, maybe dimm placement.
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[20:01] <mikeryan> ok, should i expect the machine i'm working on to disappear without warning?
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[20:02] <yehudasa> gregaf1: there are a few branches that would love to be reviewed: wip-1776, wip-rgw-refcount, wip-swift-manifest2, and wip-2923 if you feel adventurous
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[20:09] <nhmlap> mikeryan: Carl said he's got another one we can examine
[20:09] <mikeryan> ok, sounds good
[20:09] <mikeryan> wouldn't be the end of the world if this one disappeared, i'm backed up
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[20:09] <nhmlap> mikeryan: if it looks like it's configured wrong we can arrange some time to fix that one.
[20:12] <joao> sagewk, around?
[20:12] <gregaf1> yehudasa: I'll see what I can do
[20:12] <gregaf1> joao: he's out today
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[20:13] <joao> gregaf1, thanks :)
[20:13] <gregaf1> anything I can help with? or did you want to talk about mon-gv?
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[20:19] <joao> mon-gv
[20:19] <joao> will post it on gh :)
[20:19] <gregaf1> okay — haven't even looked at it yet myself :)
[20:19] <gregaf1> (unfortunately)
[20:26] <amatter> if I have two mds nodes on active, are both required to be operating (ie, I need an additional standby mds?) or will one take over all activity if the second active mds fails?
[20:26] <gregaf1> amatter: both need to be operating
[20:27] <gregaf1> if you have a standby MDS that isn't attached to a specific MDS it can take over for anybody, though
[20:29] <amatter> gregaf: thanks
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[21:20] <joao> looks like the github-related email is being ignored by thunderbird
[21:20] <joao> this is annoying
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[21:45] <nhmlap> mikeryan: We ran numademo on the other node and got a small memory performance bump by enabling iommu. We did see about 10-11GB/s with STREAM tests against local memory though. Did you see that in your numademo test?
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[22:02] <amatter> the (negative?) id number listed for a host in the crushmap- where does this come from?
[22:09] <mikeryan> nhmlap: no idea
[22:09] <mikeryan> i really have no idea what i'm doing with numademo
[22:09] <mikeryan> can you give me a command line?
[22:09] <mikeryan> or better yet, i can give you the machine's IP
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[23:15] <elder> Whew!
[23:17] <elder> yehudasa, could you take a look at the updated patches 03 and 06 and my explanation on 05 from my 11-patch series from a week or two ago?
[23:18] <elder> The updates were sent out yesterday.
[23:18] <yehudasa> elder, ok
[23:18] <elder> Thank you.
[23:23] <gregaf1> amatter: "host" is a type of CRUSH bucket, and buckets are identified by negative IDs (as opposed to devices, which have positive IDs)
[23:24] <gregaf1> the actual IDs are just monotonically decreasing
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[23:41] <elder> Thanks a lot yehudasa. If I revisit the ceph options stuff again I'll have in the back of my mind that adding refcounting might be in order.
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[23:47] <nhmlap> mikeryan: find anything interesting with the messenger?

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