>From what I understand in Jewel+ Ceph has the concept of an authorative
shard, so in the case of a 3x replica pools, it will notice that 2 replicas
match and one doesn't and use one of the good replicas. However, in a 2x
pool your out of luck.
However, if someone could confirm my suspicions that
Hi,
I have a need to support a small cluster with 3 hosts and 3 replicas given
that in normal operation each replica will be placed on a separate host
but in case one host dies then its replicas could be stored on separate
osds on the 2 live hosts.
I was hoping to write a rule that in case it co
I work for Seagate and have done over a hundred of tests using SMR 8TB disks in
a cluster. It all depends on what your access is if SMR hdd would be the best
choice. Remember SMR hdd don't perform well doing random writes, but are
excellent for reads and sequential writes.
I have many tests whe
Hi Nick,
The short answer to your question is that barring a hole in the
sandbox (or loading a modified version of the plugin which is an
option), any dependencies need to be packaged up into the the request
and can't be loaded dynamically from the host file system. In version
1 of the Lua plugin
Hi Noah,
Thanks for confirming that.
My use case is more for learning, rather than an actual working project. I
thought it was a really elegant way of harnessing the distributed power of Ceph
and wanted to learn more. For this example I wanted to do something like
calculate an MD5 hash of all
On Sat, Feb 18, 2017 at 2:39 PM, Nick Fisk wrote:
> My use case is more for learning, rather than an actual working project. I
> thought it was a really elegant way of harnessing the distributed power of
> Ceph and wanted to learn more. For this example I wanted to do something like
> calculat
Hi Rick,
If you have some numbers and info on the setup that would be greatly
appreciated.
I noticed Wildo's blog post about SMR drives:
https://blog.widodh.nl/2017/02/do-not-use-smr-disks-with-ceph/ so I guess he
ran into some problems?
Cheers,
Maxime
On Feb 18, 2017 23:04, rick stehno w
