[ceph-users] Changing monitors whilst running OpenNebula VMs

2015-09-30 Thread george.ryall
Hi, I have also posted on the OpenNebula community forum (https://forum.opennebula.org/t/changing-ceph-monitors-for-running-vms/1266). Does anyone have any experience of changing the monitors in their Ceph cluster whilst running OpenNebula VMs? We have recently bought new hardware to replace ou

Re: [ceph-users] Failed monitors

2014-07-16 Thread george.ryall
This now appears to have partially fixed itself. I am now able to run commands on the cluster, though one of the monitors is down. I still have no idea what was going on. George From: george.ry...@stfc.ac.uk [mailto:george.ry...@stfc.ac.uk] Sent: 16 July 2014 13:59 To: ceph-users@lists.ceph.co

[ceph-users] Failed monitors

2014-07-16 Thread george.ryall
On Friday I managed to run a command I probably shouldn't and knock half our OSDs offline. By setting the noout and nodown flags and bringing up the OSDS on the boxes that don't also have mons running on them I got most of the cluster back up by today (it took me a while to discover the nodown f

[ceph-users] 'osd pool set-quota' behaviour with CephFS

2014-06-24 Thread george.ryall
Last week I decided to take a look at the 'osd pool set-quota' option. I have a directory in cephFS that uses a pool called pool-2 (configured by following this: http://www.sebastien-han.fr/blog/2013/02/11/mount-a-specific-pool-with-cephfs/). I have a directory in that filled with cat picture

Re: [ceph-users] understanding rados df statistics

2014-06-20 Thread george.ryall
Thanks. I hadn’t actually found ‘ceph df’. It probably just needs a brief description of what the raw totals include. One question relating to this, the documentation you’ve linked to suggests that the pool usage stats are converted to megabytes and gigabytes where relevant, are they also conv

Re: [ceph-users] understanding rados df statistics

2014-06-19 Thread george.ryall
Having looked at a sample of OSDs it appears that it is indeed the case that for every GB of data we have 9 GB of Journal. Is this normal? Or are we not doing some Journal/cluster management that we should be? George From: Gregory Farnum [mailto:g...@inktank.com] Sent: 19 June 2014 13:53 To: R

[ceph-users] Error in documentation

2014-06-19 Thread george.ryall
Hi, I've come across an error in the Ceph documentation, what's the proper way for me to report it so that it gets fixed? (on http://ceph.com/docs/master/rados/operations/pools/#set-the-number-of-object-replicas "ceph osd pool set-quota {pool-name} [max-objects {obj-count}] [max_bytes {bytes}]

[ceph-users] understanding rados df statistics

2014-06-19 Thread george.ryall
Hi all, I'm struggling to understand some Ceph usage statistics and I was hoping someone might be able to explain them to me. If I run 'rados df' I get the following: # rados df pool name category KB objects clones degraded unfound rdrd K