Re: [ceph-users] ceph pg inconsistencies - omap data lost

On Tue, Apr 4, 2017 at 7:09 AM, Ben Morrice wrote: > Hi all, > > We have a weird issue with a few inconsistent PGs. We are running ceph 11.2 > on RHEL7. > > As an example inconsistent PG we have: > > # rados -p volumes list-inconsistent-obj 4.19 >

Re: [ceph-users] Why is cls_log_add logging so much?

On Tue, Apr 4, 2017 at 2:49 AM, Jens Rosenboom wrote: > On a busy cluster, I'm seeing a couple of OSDs logging millions of > lines like this: > > 2017-04-04 06:35:18.240136 7f40ff873700 0 > cls/log/cls_log.cc:129: storing entry at > 1_1491287718.237118_57657708.1 >

Re: [ceph-users] [Question] RBD Striping

Here is a background on Ceph striping [1]. By default, RBD will stripe data with a stripe unit of 4MB and a stripe count of 1. Decreasing the default RBD image object size will balloon the number of objects in your backing Ceph cluster but will also result in less data to copy during snapshot and

[ceph-users] osd and/or filestore tuning for ssds?

Hi everyone, Are there any osd or filestore options that operators are tuning for all-SSD clusters? If so (and they make sense) we'd like to introduce them as defaults for ssd-backed OSDs. BlueStore already has different hdd and ssd default values for many options that it chooses based on

Re: [ceph-users] deploy on centos 7

I don't recall. Perhaps later I can try a test and see. On Fri, Apr 28, 2017 at 10:22 AM Ali Moeinvaziri wrote: > Thanks. So, you didn't get any error on command "ceph-deploy mon > create-initial"? > -AM > > > On Fri, Apr 28, 2017 at 9:50 AM, Roger Brown

Re: [ceph-users] deploy on centos 7

Thanks. So, you didn't get any error on command "ceph-deploy mon create-initial"? -AM On Fri, Apr 28, 2017 at 9:50 AM, Roger Brown wrote: > I used ceph on centos 7. I check monitor status with commands like these: > systemctl status ceph-mon@nuc1 > systemctl stop

Re: [ceph-users] deploy on centos 7

I used ceph on centos 7. I check monitor status with commands like these: systemctl status ceph-mon@nuc1 systemctl stop ceph-mon@nuc1 systemctl start ceph-mon@nuc1 systemctl restart ceph-mon@nuc1 for me, the hostnames are nuc1, nuc2, nuc3 so you have to modify to suit your case. On Fri, Apr 28,

[ceph-users] deploy on centos 7

Hi, I'm just trying to install and test cephs with centos 7, which is the recommended version over centos 6 (if I read it correctly). However, the scripts seem to be still tuned for centos6. So here is the error I get on deploying monitor node: [ceph_deploy.mon][ERROR ] Failed to execute

Re: [ceph-users] Maintaining write performance under a steady intake of small objects

On 04/28/2017 08:23 AM, Frédéric Nass wrote: Le 28/04/2017 à 15:19, Frédéric Nass a écrit : Hi Florian, Wido, That's interesting. I ran some bluestore benchmarks a few weeks ago on Luminous dev (1st release) and came to the same (early) conclusion regarding the performance drop with many

Re: [ceph-users] Replication (k=1) in LRC

You can't have different EC profiles in the same pool either. You have to create the pool as either a specific EC profile or as Replica. If you choose EC you can't even change the EC profile later, however you can change the amount of copies a Replica pool has. An EC pool of 1:1 doesn't do

Re: [ceph-users] Replication (k=1) in LRC

On 04/28/2017 02:48 PM, David Turner wrote: > Wouldn't k=1, m=1 just be replica 2? Well yes. But Ceph does not support mixing replication and erasure code in the same pool. > EC will split the object into k pieces (1)... Ok, that's the whole object. I was just wondering if jerasure

Re: [ceph-users] Maintaining write performance under a steady intake of small objects

Le 28/04/2017 à 15:19, Frédéric Nass a écrit : Hi Florian, Wido, That's interesting. I ran some bluestore benchmarks a few weeks ago on Luminous dev (1st release) and came to the same (early) conclusion regarding the performance drop with many small objects on bluestore, whatever the

Re: [ceph-users] Maintaining write performance under a steady intake of small objects

Hi Florian, Wido, That's interesting. I ran some bluestore benchmarks a few weeks ago on Luminous dev (1st release) and came to the same (early) conclusion regarding the performance drop with many small objects on bluestore, whatever the number of PGs is on a pool. Here is the graph I

Re: [ceph-users] Replication (k=1) in LRC

Wouldn't k=1, m=1 just be replica 2? EC will split the object into k pieces (1)... Ok, that's the whole object. And then you want to be able to lose m copies of the object (1)... Ok, that's an entire copy of that whole object. That isn't erasure coding, that is full 2 copy replication. For

Re: [ceph-users] RGW 10.2.5->10.2.7 authentication fail?

Hello again, I can work around this issue. If the host header is an IP address, the request is treated as a virtual: So if I auth to to my backends via IP, things work as expected. Kind regards, Ben Morrice __ Ben Morrice

Re: [ceph-users] RGW 10.2.5->10.2.7 authentication fail?

Hello Radek, Thanks again for your anaylsis. I can confirm on 10.2.7, if I remove the conf "rgw dns name" I can auth to directly to the radosgw host. In our environment we terminate SSL and route connections via haproxy, but it's still sometimes useful to be able to communicate directly to