[ceph-users] Replace OSD drive without remove/re-add OSD

Hi, May I know if it's possible to replace an OSD drive without removing / re-adding back the OSD? I want to avoid the time and the excessive I/O load which will happen during the recovery process at the time when: - the OSD is removed; and - the OSD is being put back into the cluster. I read

[ceph-users] Migrate system VMs from local storage to CEPH

Hi. I was wondering what would be correct way to migrate system VMs (storage,console,VR) from local storage to CEPH. I'm on CS 4.2.1 and will be soon updating to 4.3... Is it enough to just change global setting system.vm.use.local.storage = true, to FALSE, and then destroy system VMs

[ceph-users] help to tune ceph

Hi to all, I need your help to understand how to tune my ceph configuration to achieve some performance result. my installation is built as follow: 5 server with 16gb ram and 8 core 5 client (same machine) Each computer is connected with a 1gb/s ethernet to the same switch. The device storage

[ceph-users] ceph mom help

Hello All, I am using “ceph-deploy” to setup my ceph cluster with 3 nodes. I am getting an error when running “sudo ceph-deploy mon create gfsnode5”. Would you someone please give me a pointer what the problem is? Thanks in advance! -Jimmy [cuser@gfsnode5 my-cluster]$ sudo ceph-deploy mon

Re: [ceph-users] ceph mom help

This is a possible bug which was resolved. It was due to leveldb version. My node is already running on version 1.12. [root@gfsnode5 my-cluster]# rpm -qa | grep -i leveldb leveldb-1.12.0-3.el6.x86_64 [root@gfsnode5 my-cluster]# Thanks, Jimmy From: J L

Re: [ceph-users] ceph mom help

I was able to dig up an archive of an IRC chat from Sage. The suggestion from the chat was to downgrade leveldb from 1.12 to 1.7.0. After the downgrade, I was able to run sudo ceph-deploy mon create gfsnode5. -Jimmy From: J L j...@yahoo-inc.commailto:j...@yahoo-inc.com Date: Friday, May 2,

[ceph-users] Ceph User Committee elections

Hi, It is time for the first elections of the Ceph User Committee ! I've enjoyed the position for the past six months. It is a little time consuming (about eight hours a week) but it's also a great opportunity to be in the center of the storage (r)evolution. If you're tempted, feel free to add

Re: [ceph-users] ceph editable failure domains

On 5/2/14 05:15 , Fabrizio G. Ventola wrote: Hello everybody, I'm making some tests with ceph and its editable cluster map and I'm trying to define a rack layer for its hierarchy in this way: ceph osd tree: # id weight type name up/down reweight -1 0.84 root default -7 0.28 rack rack1 -2 0.14

Re: [ceph-users] Replace OSD drive without remove/re-add OSD

Sorry forgot to cc the list. On 3 May 2014 08:00, Indra Pramana in...@sg.or.id wrote: Hi Andrey, I actually wanted to try this (instead of remove and readd OSD) to avoid remapping of PGs to other OSDs and the unnecessary I/O load. Are you saying that doing this will also trigger remapping?