Hi all,
I'm working on filling a cluster to near capacity for testing purposes.
Though I'm noticing that it isn't storing the data uniformly between OSDs
during the filling process. I currently have the following levels:
Node 1:
/dev/sdb1 3904027124 2884673100 1019354024
On 01/08/2015 03:35 PM, Michael J Brewer wrote:
Hi all,
I'm working on filling a cluster to near capacity for testing purposes.
Though I'm noticing that it isn't storing the data uniformly between
OSDs during the filling process. I currently have the following levels:
Node 1:
/dev/sdb1
Hi,
first of all, I am a “ceph-beginner“ so i am sorry for the trivial questions :).
I have build a ceph three node cluster for virtualization.
Hardware:
Dell Poweredge 2900
8 x 300GB SAS 15k7 with Dell Perc 6/i in Raid 0
2 x 120GB SSD in Raid 1 with Fujitsu Raid Controller for Journal
On Thu, 8 Jan 2015 05:36:43 PM Patrik Plank wrote:
Hi Patrick, just a beginner myself, but have been through a similar process
recently :)
With these values above, I get a write performance of 90Mb/s and read
performance of 29Mb/s, inside the VM. (Windows 2008/R2 with virtio driver
and
On Thu, 8 Jan 2015 15:35:22 -0600 Michael J Brewer wrote:
Hi all,
I'm working on filling a cluster to near capacity for testing purposes.
Though I'm noticing that it isn't storing the data uniformly between OSDs
during the filling process. I currently have the following levels:
Lindsay,
Yes, I would suggest starting with the 'RBD and libRados' use case from
the drop down, then adjusting the percentages / pool names (if you desire)
as appropriate. I don't have a ton of experience with CephFS, but I would
suspect that the metadata is less than 5% of the total data usage
that depends.. with which block size do you get those numbers? Ceph is
really good with block sizes 256kb, 1M, 4M...
German Anders
--- Original message ---
Asunto: [ceph-users] slow read-performance inside the vm
De: Patrik Plank pat...@plank.me
Para:
On Thu, 8 Jan 2015 11:41:37 -0700 Robert LeBlanc wrote:
On Wed, Jan 7, 2015 at 10:55 PM, Christian Balzer ch...@gol.com wrote:
Which of course begs the question of why not having min_size at 1
permanently, so that in the (hopefully rare) case of loosing 2 OSDs at
the same time your cluster
On Wed, Jan 7, 2015 at 9:55 PM, Christian Balzer ch...@gol.com wrote:
On Wed, 7 Jan 2015 17:07:46 -0800 Craig Lewis wrote:
On Mon, Dec 29, 2014 at 4:49 PM, Alexandre Oliva ol...@gnu.org wrote:
However, I suspect that temporarily setting min size to a lower number
could be enough for the
On Wed, Jan 7, 2015 at 10:55 PM, Christian Balzer ch...@gol.com wrote:
Which of course begs the question of why not having min_size at 1
permanently, so that in the (hopefully rare) case of loosing 2 OSDs at the
same time your cluster still keeps working (as it should with a size of 3).
The
You can have a look of what I did here with Christian:
* https://github.com/stackforge/swift-ceph-backend
* https://github.com/enovance/swiftceph-ansible
If you have further question just let us know.
On 08 Jan 2015, at 15:51, Robert LeBlanc rob...@leblancnet.us wrote:
Anyone have a
On Wed, Jan 7, 2015 at 10:15 PM, Noah Watkins noah.watk...@inktank.com wrote:
I'm trying to install Firefly on an up-to-date FC20 box. I'm getting
the following errors:
[nwatkins@kyoto cluster]$ ../ceph-deploy/ceph-deploy install --release
firefly kyoto
[ceph_deploy.conf][DEBUG ] found
Hi Nico.
If you are experiencing such issues it would be good if you provide more info
about your deployment: ceph version, kernel versions, OS, filesystem btrfs/xfs.
Thx Jiri
- Reply message -
From: Nico Schottelius nico-eph-us...@schottelius.org
To: ceph-users@lists.ceph.com
Subject:
Awesome, thanks Michael.
Regards
William
From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of
Michael J. Kidd
Sent: Wednesday, January 07, 2015 2:09 PM
To: ceph-us...@ceph.com
Subject: [ceph-users] PG num calculator live on Ceph.com
Hello all,
Just a quick heads up that
I just finished configuring ceph up to 100 TB with openstack ... Since we
are also using Lustre in our HPC machines , just wondering what is the
bottle neck in ceph going on Peta Scale like Lustre .
any idea ? or someone tried it
--
Regards
Zeeshan Ali Shah
System Administrator - PDC HPC
On Thu, 8 Jan 2015, Christopher Kunz wrote:
Am 05.01.15 um 15:16 schrieb Christopher Kunz:
Hi all,
I think I have a subtle problem with either understanding CRUSH or in
the actual implementation of my CRUSH map.
Consider the following CRUSH map:
Hi Noah,
The root cause has been found. Please see
http://tracker.ceph.com/issues/10476 for details.
In short, it's an issue between RPM obsoletes and yum priorities
plugin. Final solution is pending, but details of a work around are
in the issue comments.
- Travis
On Wed, Jan 7, 2015 at
Thanks for your answer. But another doubt raised…
Suppose I have 4 hosts with a erasure pool created with k=3, m=1 and failure
domain by host and I lost a host. On this case I’ll face with the same issue on
the beginning of this thread because k+m number of hosts, right?
- On this scenario,
Anyone have a reference for documentation to get Ceph to be a backend for Swift?
Thanks,
Robert LeBlanc
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Am 05.01.15 um 15:16 schrieb Christopher Kunz:
Hi all,
I think I have a subtle problem with either understanding CRUSH or in
the actual implementation of my CRUSH map.
Consider the following CRUSH map: http://paste.debian.net/hidden/085b3f20/
I have 3 chassis' with 7 nodes each (6 of
I had problems in CentOS 7, with the normal Ceph's mirrors... try
using the eu.ceph.com ones... it helped me at the time!
Good luck!
Marco Garcês
#sysadmin
Maputo - Mozambique
On Thu, Jan 8, 2015 at 1:09 PM, John Spray john.sp...@redhat.com wrote:
On Tue, Jan 6, 2015 at 7:40 AM, Nur Aqilah
On Thu, Jan 8, 2015 at 11:22 AM, Nur Aqilah aqi...@impact-multimedia.com
wrote:
Do you mind telling me which guide you were following, that is, if you
were using any?
(copying list back in)
I was just doing it off the top of my head in this instance. Running
ceph-deploy install myhostname
Thanks, Craig!
I'll try to do crush reweight if OSDs get more different. For now it is
mostly okay.
It looks like this could be automated by external tool that does 0.05 step
for the biggest OSD, waits for data to settle down and decides/asks if
another step should be performed. Balancing 106
The short answer is that uniform distribution is a lower priority feature
of the CRUSH hashing algorithm.
CRUSH is designed to be consistent and stable in it's hashing. For the
details, you can read Sage's paper (
http://ceph.com/papers/weil-rados-pdsw07.pdf). The goal is that if you
make a
On Tue, Jan 6, 2015 at 7:40 AM, Nur Aqilah aqi...@impact-multimedia.com
wrote:
I was wondering if anyone can give me some guidelines in installing ceph
on Centos 7. I followed the guidelines on ceph.com on how to do the Quick
Installation. But there was always this one particular error. When i
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