Re: Question Blackout

["Jesus Chavez (jeschave)" <jeschave@xxxxxxxxx>]

Thank you Craig thats the Kind of answer I was expecting for :) actually we have had an outage and 1 server never came up but was because of human error and 1 osd from order node were down so we Couldnt even access to the filesystem but At last I saw that the 90% of the nodes didnt crush or something :)

So thats fine for Now 

Thank you so much!


Jesus Chavez
SYSTEMS ENGINEER-C.SALES

jeschave@xxxxxxxxx
Phone: +52 55 5267 3146
Mobile: +51 1 5538883255

CCIE - 44433

On Mar 20, 2015, at 4:39 PM, Craig Lewis <clewis@xxxxxxxxxxxxxxxxxx> wrote:

I'm not a CephFS user, but I have had a few cluster outages.

Each OSD has a journal, and Ceph ensures that a write is in all of the journals (primary and replicas) before it acknowledges the write.  If an OSD process crashes, it replays the journal on startup, and recovers the write.

I've lost power at my data center, and had the whole cluster down.  Ceph came back up when power was restored without me getting involved.

You might want the paid support package.  For extra piece of mind, you can get a paid cluster review, and an engineer will go through your use case with you.

On Tue, Mar 17, 2015 at 8:32 PM, Jesus Chavez (jeschave) <jeschave@xxxxxxxxx> wrote:

Hi everyone, I am ready to launch ceph on production but there is one thing that keeps on my mind... If there was a Blackout where all the ceph nodes went off what would really  happen with the filesystem? It would get corrupt? Or ceph has any Kind of mechanism to survive to something like that?

Thanks


Jesus Chavez
SYSTEMS ENGINEER-C.SALES

jeschave@xxxxxxxxx
Phone: +52 55 5267 3146
Mobile: +51 1 5538883255

CCIE - 44433

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com