#ceph IRC Log

Index

IRC Log for 2011-03-14

Timestamps are in GMT/BST.

[0:30] <greglap> lalaa: data is fully replicated based on the "size" parameter of each pool (it defaults to 2)
[0:30] <greglap> so if you have 2 OSDs, that's enough for complete safety
[0:30] * verwilst_ (~verwilst@dD576FAAE.access.telenet.be) Quit (Quit: Ex-Chat)
[0:30] <greglap> if you have multiple osd daemons per node, though, you'll need to make sure you set up your CRUSH map so replicas are on different nodes from eachother
[0:31] <greglap> http://ceph.newdream.net/wiki/Custom_data_placement_with_CRUSH
[0:58] <lalaa> thank you for the help, will look into it tomorrow!
[0:58] * lalaa (~baz@kssl-4db0c3c5.pool.mediaWays.net) Quit (Quit: sleep)
[1:05] <monrad-51468> will increasing the replication level also increase performance, or will requests only be served from one location?
[1:06] <greglap> right now reads are only serviced by the primary replica
[1:06] <greglap> and higher replication levels can slow down write performance
[1:06] <monrad-51468> i guess all have to say ok when writing
[1:07] <greglap> more like they all need to get the data :)
[1:07] <monrad-51468> :)
[1:11] <monrad-51468> we talked about using processing nodes (web, mail servers) as storage node also
[1:11] <monrad-51468> well at least testing it out
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[19:55] <Tv> gregaf: "Laszlo" from http://tracker.newdream.net/issues/837 is Laszlo Boszormenyi <gcs@debian.hu> right?
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[19:58] <Tv> ah yes i see the email
[19:59] <gregaf> Tv: uh, yes?
[19:59] <gregaf> do you know him?
[20:00] <Tv> asking him to try again
[20:01] <Tv> bleh the database backing our website is wonky :-(
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[20:32] <Tv> urr commit f294b26746a30960971757c42d679208a99995a7 confuses me
[20:32] <Tv> +int rados_write(rados_ioctx_t io, const char *oid, const char *buf, uint64_t len, off_t off);
[20:33] <Tv> that seems to use 64-bit for in-memory data, but plain old off_t (= can be 32-bit) for the position to write to
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[20:37] <cmccabe> tv: check head-of-line
[20:38] <cmccabe> tv: it's correct in master
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[20:46] <Tv> ah yeah wasn't pushed a few mins ago
[20:48] <rajeshr> Anybody else get a "Error establishing a database connection" from http://ceph.newdream.net/?
[20:48] <Tv> rajeshr: yup, every now and then
[20:49] <Tv> aftermath of http://www.dreamhoststatus.com/2011/03/14/network-outage-5/
[20:50] <rajeshr> Tv: oh ok. Is there an alternative/mirror? I was looking to git clone the latest sources.
[20:50] <Tv> rajeshr: git works just fine, at least for me
[20:50] <Tv> git://ceph.newdream.net/git/ceph.git
[20:52] <rajeshr> Tv: that is working. Thanks!
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