Re: [ceph-users] Newbie Ceph Design Questions

2014-09-21 Thread Udo Lembke
Hi Christian, On 21.09.2014 07:18, Christian Balzer wrote: ... Personally I found ext4 to be faster than XFS in nearly all use cases and the lack of full, real kernel integration of ZFS is something that doesn't appeal to me either. a little bit OT... what kind of ext4-mount options do you

Re: [ceph-users] Merging two active ceph clusters: suggestions needed

2014-09-21 Thread Robin H. Johnson
On Sun, Sep 21, 2014 at 02:33:09PM +0900, Christian Balzer wrote: For a variety of reasons, none good anymore, we have two separate Ceph clusters. I would like to merge them onto the newer hardware, with as little downtime and data loss as possible; then discard the old hardware.

Re: [ceph-users] [Single OSD performance on SSD] Can't go over 3, 2K IOPS

2014-09-21 Thread Zhang, Jian
Thanks. The results looked close to our results now. Thanks Jian -Original Message- From: Alexandre DERUMIER [mailto:aderum...@odiso.com] Sent: Friday, September 19, 2014 8:54 PM To: Zhang, Jian Cc: ceph-users@lists.ceph.com Subject: Re: [ceph-users] [Single OSD performance on SSD]

Re: [ceph-users] Newbie Ceph Design Questions

2014-09-21 Thread Christian Balzer
Hello, On Sun, 21 Sep 2014 21:00:48 +0200 Udo Lembke wrote: Hi Christian, On 21.09.2014 07:18, Christian Balzer wrote: ... Personally I found ext4 to be faster than XFS in nearly all use cases and the lack of full, real kernel integration of ZFS is something that doesn't appeal to

Re: [ceph-users] Troubleshooting down OSDs: Invalid command: ceph osd start osd.1

2014-09-21 Thread Piers Dawson-Damer
Hi Loïc, It seams there is another error in the documentation at (http://ceph.com/docs/argonaut/init/stop-cluster/) I believe sudo service -a ceph stop Should probably read sudo service ceph -a stop Cheers On 19 Sep 2014, at 6:33 pm, Loic Dachary l...@dachary.org wrote: Hi, The