Hi Karan/All, Thanks.I guess Joao Eduardo missunderstood me too. 1. yes there is 1 SSD on each server. There is also 4 data drive on each server. so i will have 4 OSD's on each server. 2. I want to know if its a good idea to use 1 partition on the SSD for the journals of the 4 OSD's. 3. considering if the SSD FAILS WHAT HAPPENS TO THE OSD's? if i have 3 replicas set, what is a good PLACEMENT GROUP NUMBER for the data pool, THAT ENSURES the 3 replicas don't end up on the same node. because if it does then crush map etc can never recover the my data. Any idea? /regards Charles. ________________________________ > Date: Thu, 31 Oct 2013 16:27:02 +0200 > From: ksingh@xxxxxx > To: charlesboy009@xxxxxxxxxxx > CC: majordomo@xxxxxxxxxxxxxxx; ceph-users@xxxxxxxx > Subject: Re: testing ceph > > Hello Charles > > Need some more clarification with your setup , Did you mean > > 1) There is 1 SSD ( 60 GB ) on each server i.e 6 SSD on all 6 servers ? > > 2) your osd.3 , osd.4 , osd.5 uses same journal ( /dev/sdf2 ) ? > > Regards > Karan Singh > > ________________________________ > From: "charles L" <charlesboy009@xxxxxxxxxxx> > To: "ceph dev" <majordomo@xxxxxxxxxxxxxxx>, ceph-users@xxxxxxxx > Sent: Thursday, 31 October, 2013 6:24:13 AM > Subject: testing ceph > > Hi, > Pls is this a good setup for a production environment test of ceph? My > focus is on the SSD ... should it be partitioned(sdf1,2 ,3,4) and > shared by the four OSDs on a host? or is this a better configuration > for the SSD to be just one partition(sdf1) while all osd uses that one > partition? > my setup: > - 6 Servers with one 250gb boot disk for OS(sda), > four-2Tb Disks each for the OSDs i.e Total disks = 6x4 = 24 disks (sdb -sde) > and one-60GB SSD for Osd Journal(sdf). > -RAM = 32GB on each server with 2 GB network link. > hostname for servers: Server1 -Server6 > > [osd.0] > host = server1 > devs = /dev/sdb > osd journal = /dev/sdf1 > [osd.1] > host = server1 > devs = /dev/sdc > osd journal = /dev/sdf2 > > [osd.3] > host = server1 > devs = /dev/sdd > osd journal = /dev/sdf2 > > [osd.4] > host = server1 > devs = /dev/sde > osd journal = /dev/sdf2 > [osd.5] > host = server2 > devs = /dev/sdb > osd journal = /dev/sdf2 > ... > [osd.23] > host = server6 > devs = /dev/sde > osd journal = /dev/sdf2 > > Thanks. > > _______________________________________________ > 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
 |