Hi Saverio, I first made a test on my test staging lab where I have only 4 OSD. On my mon servers (which run other services) I have 16BG RAM, 15GB used but 5 cached. On the OSD servers I have 3GB RAM, 3GB used but 2 cached. "ceph -s" tells me nothing about PGs, shouldn't I get an error message from its output?
Thanks Giuseppe 2015-04-14 18:20 GMT+02:00 Saverio Proto <ziopr...@gmail.com>: > You only have 4 OSDs ? > How much RAM per server ? > I think you have already too many PG. Check your RAM usage. > > Check on Ceph wiki guidelines to dimension the correct number of PGs. > Remeber that everytime to create a new pool you add PGs into the > system. > > Saverio > > > 2015-04-14 17:58 GMT+02:00 Giuseppe Civitella < > giuseppe.civite...@gmail.com>: > > Hi all, > > > > I've been following this tutorial to realize my setup: > > > http://www.sebastien-han.fr/blog/2014/08/25/ceph-mix-sata-and-ssd-within-the-same-box/ > > > > I got this CRUSH map from my test lab: > > http://paste.openstack.org/show/203887/ > > > > then I modified the map and uploaded it. This is the final version: > > http://paste.openstack.org/show/203888/ > > > > When applied the new CRUSH map, after some rebalancing, I get this health > > status: > > [-> avalon1 root@controller001 Ceph <-] # ceph -s > > cluster af09420b-4032-415e-93fc-6b60e9db064e > > health HEALTH_WARN crush map has legacy tunables; mon.controller001 > low > > disk space; clock skew detected on mon.controller002 > > monmap e1: 3 mons at > > {controller001= > 10.235.24.127:6789/0,controller002=10.235.24.128:6789/0,controller003=10.235.24.129:6789/0 > }, > > election epoch 314, quorum 0,1,2 > controller001,controller002,controller003 > > osdmap e3092: 4 osds: 4 up, 4 in > > pgmap v785873: 576 pgs, 6 pools, 71548 MB data, 18095 objects > > 8842 MB used, 271 GB / 279 GB avail > > 576 active+clean > > > > and this osd tree: > > [-> avalon1 root@controller001 Ceph <-] # ceph osd tree > > # id weight type name up/down reweight > > -8 2 root sed > > -5 1 host ceph001-sed > > 2 1 osd.2 up 1 > > -7 1 host ceph002-sed > > 3 1 osd.3 up 1 > > -1 2 root default > > -4 1 host ceph001-sata > > 0 1 osd.0 up 1 > > -6 1 host ceph002-sata > > 1 1 osd.1 up 1 > > > > which seems not a bad situation. The problem rise when I try to create a > new > > pool, the command "ceph osd pool create sed 128 128" gets stuck. It never > > ends. And I noticed that my Cinder installation is not able to create > > volumes anymore. > > I've been looking in the logs for errors and found nothing. > > Any hint about how to proceed to restore my ceph cluster? > > Is there something wrong with the steps I take to update the CRUSH map? > Is > > the problem related to Emperor? > > > > Regards, > > Giuseppe > > > > > > > > > > 2015-04-13 18:26 GMT+02:00 Giuseppe Civitella > > <giuseppe.civite...@gmail.com>: > >> > >> Hi all, > >> > >> I've got a Ceph cluster which serves volumes to a Cinder installation. > It > >> runs Emperor. > >> I'd like to be able to replace some of the disks with OPAL disks and > >> create a new pool which uses exclusively the latter kind of disk. I'd > like > >> to have a "traditional" pool and a "secure" one coexisting on the same > ceph > >> host. I'd then use Cinder multi backend feature to serve them. > >> My question is: how is it possible to realize such a setup? How can I > bind > >> a pool to certain OSDs? > >> > >> Thanks > >> Giuseppe > > > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > >
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