Hi Oliver,
can you post here on the mailing list the steps taken?
>From the IRC logs you said "if I use "choose .... osd", it works -- but
"chooseleaf ... host" doesn't work"
So, to have data balanced between 2 rooms, is the rule "step chooseleaf
firstn 0 type room" correct?
Thanks
--
Marco
2013/3/8 Olivier Bonvalet <ceph.l...@daevel.fr>
>
> >
> > Thanks for your answer. So I made some tests on a dedicated spool, I was
> > able to move data from «platter» to «SSD» very well, it's great.
> >
> > But I can't obtain that per "network" neither per "host" setup :
> > with 2 hosts, each one with 2 OSD, and with a pool with use only 1
> > replica (so, 2 copies), I tried this rule :
> >
> > rule rbdperhost {
> > ruleset 5
> > type replicated
> > min_size 1
> > max_size 10
> > step take default
> > step chooseleaf firstn 0 type host
> > step emit
> > }
> >
> >
> > As a result I obtain some PG which stuck in «active+remapped» state.
> > When querying one of this PG, I see that CRUSH find only one OSD up for
> > this one and can't find an other OSD to set replica.
> >
> > If I well understand, in this case the "chooseleaf firstn 0 type host"
> > say to Ceph to choose 2 differents hosts, then in each of them choose
> > one OSD. So with 2 hosts, it should works, no ?
> >
> > Thanks,
> > Olivier B.
> >
> >
>
> So, as said on IRC, it's solved. My rules were not working, and after
> use of «tunables» it's ok.
>
> I love that feature of changing data spreading on live !
>
>
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>
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