#ceph IRC Log

Index

IRC Log for 2011-05-31

Timestamps are in GMT/BST.

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[4:58] <u3q> ok
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[13:45] <wonko_be> gents, any way to quickly determine which OSD is "offline"
[13:45] <wonko_be> 2011-05-31 13:45:34.409036 osd e95: 9 osds: 8 up, 8 in
[13:45] <wonko_be> what I want to know is osd.X which is down
[13:50] <nms> ceph osd dump -o - | grep down
[13:51] <wonko_be> ah, perfect
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[13:57] <alien_> hello
[13:57] <alien_> how well does ceph work across WAN links?
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[16:52] <greglap> allen_: depends on how fast your WAN is ;)
[16:53] <greglap> Ceph doesn't have any knowledge of different data centers in terms of routing traffic or anything
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[17:32] <alien_> greglap: maybe 50mbit, but the latency might be an issue
[17:34] <greglap> allen_: yeah, and you'll be limited to 50Mb writes...Ceph is really designed for operation within a single datacenter
[17:41] <alien_> greglap: do you know of any other solutions that would work under these constraints?
[17:42] <greglap> I don't have experience with any of them, others might know better....
[17:42] <greglap> depends on exactly what you're trying to do, but you could look at AFS (:P), XtreemFS, or running rsync on a cron job ;)
[17:43] <greglap> bbiab
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[18:07] <gregaf> back
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[19:24] <bchrisman> sage: sagewk1 got a mtg until around noon today???
[19:31] <Tv> are we doing the meeting? i see unrelated people in the meeting room..
[19:31] <gregaf> they're on some kind of call right now, I think
[19:31] <gregaf> done soon, hopefully
[19:32] <Tv> i'd like a clearer yes/no on these things, right now i'm not gonna start my next task if i'm going to be interrupted within 5 min..
[19:34] <gregaf> yeah, welcome to the club :(
[19:34] <gregaf> we were doing pretty well for several weeks at it but then other people started scheduling morning management meetings
[19:34] <Tv> it's more an attitude problem
[19:35] <Tv> we either do it at 11am, or we have no rhythm to it
[19:35] <Tv> if we do it at 11am, we do it if it means standing outside in the rain
[19:43] <bchrisman> Tv: agreed :)
[19:43] <bchrisman> if the time is consistent enough, I put that in my calendar and nobody will bug me for mtgs in that slot..
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[22:05] <sagewk1> so the librados flush does add a lock/unlock in the aio submission and completion paths. it should be noise given everything else going on in the objecter and over the wire..
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[22:27] * damien1 is now known as damoxc
[22:28] <damoxc> hey, what's the easiest way to check to see which osds are up?
[22:29] <Tv> damoxc: probably ceph -s
[22:29] <joshd> for seeing which ones are up/down you can do ceph osd dump -o -
[22:30] <damoxc> joshd: ah excellent thanks
[22:30] <damoxc> now to figure out why they are down
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