No error message. You just finish the RAM memory and you blow up the cluster because of too many PGs. Saverio 2015-04-14 18:52 GMT+02:00 Giuseppe Civitella <giuseppe.civitella@xxxxxxxxx>: > 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 <zioproto@xxxxxxxxx>: >> >> 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.civitella@xxxxxxxxx>: >> > 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.civitella@xxxxxxxxx>: >> >> >> >> 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@xxxxxxxxxxxxxx >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > > > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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