Try 3.x from elrepo repo...works for me, cloudstack/ceph...
Sent from Google Nexus 4
On May 14, 2014 11:56 AM, "maoqi1982" wrote:
> Hi list
> our ceph(0.72) cluster use ubuntu12.04 is ok . client server run
> openstack install "CentOS6.4 final", the kernel is up to
> kernel-2.6.32-358.123.2.ope
etter than our old setup so it was good enough.
>>
>> hth
>>
>>
>>
>> On Tue, Aug 25, 2015 at 12:07 PM, Andrija Panic
>> wrote:
>>
>>> We have some 850 pro 256gb ssds if anyone interested to buy:)
>>>
>>> And also there was
kind of workload are you running? Do you use Samsung SSD as separate
> journaling disk, right?
>
>
>
> Thanks so much.
>
>
>
> James
>
>
>
> *From:* ceph-users [mailto:ceph-users-boun...@lists.ceph.com] *On Behalf
> Of *Quentin Hartman
> *Sent:* Thursday
ogether a report with my
> pertinent information in it to forward on to someone.
>
> FWIW, I tried to get your 845's for this deploy, but couldn't find them
> anywhere, and since the 850's looked about as durable on paper I figured
> they would do ok. Seems not to b
with CloudStack , am I
> correct? The 2 SSDs vanished in 2~3 weeks is brand new Samsung 850 Pro
> 128GB, right?
>
>
>
> Thanks,
>
> James
>
>
>
> *From:* Andrija Panic [mailto:andrija.pa...@gmail.com]
> *Sent:* Friday, September 04, 2015 11:53 AM
> *To:* James
only achieve 200IOPS
> with Samsung 850Pro, right?
>
>
>
> Theoretically, Samsung 850 Pro can get up to 100,000 IOPS with 4k Random
> Read with certain workload. It is a little bit strange over here.
>
>
>
> Regards,
>
> James
>
>
>
>
>
> *From
There is
http://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/
On the other hand, I'm not sure if SSD vendors would be happy to see their
device listed performing total crap (for Journaling) ...but yes, I vote for
having some oficial page if poss
"enough 4k read iop/s for multithreaded apps (around 23 000) with qemu
2.2.1."
That is very nice number if I'm allowed to comment - may I know what is
your setup (in 2 lines, hardware, number of OSDs) ?
Thanks
On 10 September 2015 at 15:39, Jan Schermer wrote:
> Get faster CPUs (sorry, nothing
We also get 2ms for writes, INtel S3500 Journals (5 journals on 1 SSD) and
4TB OSDs...
On 10 September 2015 at 16:41, Jan Schermer wrote:
> What did you tune? Did you have to make a human sacrifice? :) Which
> release?
> The last proper benchmark numbers I saw were from hammer and the latencies
Another one bites the dust...
This is Samsung 850 PRO 256GB... (6 journals on this SSDs just died...)
[root@cs23 ~]# smartctl -a /dev/sda
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-3.10.66-1.el6.elrepo.x86_64]
(local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.
find anyone with their DC-class drives actually in stock so
> I ended up switching the to Intel S3700s. My users will be happy to have
> some SSDs to put in their workstations though!
>
> QH
>
> On Thu, Sep 17, 2015 at 4:49 PM, Andrija Panic
> wrote:
>
>> Another one bit
Hi,
depending on cache mode etc - from what we have also experienced (using
CloudStack) - CEPH snapshot functionality simply stops working in some
cache configuration.
This means, we were also unable to deploy new VMs (base-gold snapshot is
created on CEPH and new data disk which is child of snaps
Jiri,
if you colocate more Journals on 1 SSD (we do...), make sure to understand
the following:
- if SSD dies, all OSDs that had their journals on it, are lost...
- the more journals you put on single SSD (1 journal being 1 partition),
the worse performance, since total SSD performance is not i.e
Make sure to check this blog page
http://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/
Since Im not sure if you are playing arround with CEPH, or plan it for
production and good performance.
My experience SSD as journal: SSD Samsung 850 PRO = 20
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