Re: [ceph-users] RHEL 7.1 ceph-disk failures creating OSD

Hi Bruce, I think the problem comes from using /dev/disk/by-id/wwn-0x53959bd02f56 instead of /dev/sdw for the data disk, because ceph-disk has a device name parsing logic that works with /dev/XXX. Could you run the ceph-disk prepare command again with --verbose to confirm ? If that's the ca

Re: [ceph-users] Trying to understand Cache Pool behavior

Hi Reid, Yes they will, but if the object which the user is writing to (Disk Block if using RBD, which then maps to an object) has never been written to before, it won't have to promote the object from the base pool before being able to write it. However as you write each object, once the cache p

Re: [ceph-users] kernel 3.18 io bottlenecks?

Dear Ilya, Am 25.06.2015 um 14:07 schrieb Ilya Dryomov: On Wed, Jun 24, 2015 at 10:29 PM, Stefan Priebe wrote: Am 24.06.2015 um 19:53 schrieb Ilya Dryomov: On Wed, Jun 24, 2015 at 8:38 PM, Stefan Priebe wrote: Am 24.06.2015 um 16:55 schrieb Nick Fisk: That kernel probably has the bug

Re: [ceph-users] Trying to understand Cache Pool behavior

Sounds good, thanks for the info and will wait and test with next releases. > On Jun 27, 2015, at 9:24 AM, Nick Fisk wrote: > > Hi Reid, > > Yes they will, but if the object which the user is writing to (Disk Block if > using RBD, which then maps to an object) has never been written to bef

Re: [ceph-users] kernel 3.18 io bottlenecks?

On Sat, Jun 27, 2015 at 6:20 PM, Stefan Priebe wrote: > Dear Ilya, > > Am 25.06.2015 um 14:07 schrieb Ilya Dryomov: >> >> On Wed, Jun 24, 2015 at 10:29 PM, Stefan Priebe >> wrote: >>> >>> >>> Am 24.06.2015 um 19:53 schrieb Ilya Dryomov: On Wed, Jun 24, 2015 at 8:38 PM, Stefan Prieb

[ceph-users] Redundant networks in Ceph

The current network design in Ceph (http://ceph.com/docs/master/rados/configuration/network-config-ref) uses nonredundant networks for both cluster and public communication. Ideally, in a high load environment these will be 10 or 40+ GbE networks. For cost reasons, most such installation will use

Re: [ceph-users] Redundant networks in Ceph

Hi Alex, I think the answer is you do 1 of 2 things. You either design your network so that it is fault tolerant in every way so that network interruption is not possible. Or go with non-redundant networking, but design your crush map around the failure domains of the network. I'm interested in y

[ceph-users] Ubuntu -Juno Openstack - Ceph integrated - Istalling ubuntu server instance

Hello everyone, I created a bootable volume on openstack and trying to boot a ubuntu-server 14.04 image . I am able to get to the initial setup screen of Ubuntu, but after asking for the timezone and location I am not able to proceed further as it says it's not able to access the CDrom drive

Re: [ceph-users] Redundant networks in Ceph

Hi Nick, Thank you fro writing back: > I think the answer is you do 1 of 2 things. You either design your network > so that it is fault tolerant in every way so that network interruption is > not possible. Or go with non-redundant networking, but design your crush map > around the failure domains

Re: [ceph-users] Redundant networks in Ceph

> -Original Message- > From: Alex Gorbachev [mailto:a...@iss-integration.com] > Sent: 27 June 2015 21:55 > To: Nick Fisk > Cc: ceph-users@lists.ceph.com > Subject: Re: [ceph-users] Redundant networks in Ceph > > Hi Nick, > > Thank you fro writing back: > > > I think the answer is you

[ceph-users] SSL Certificate failure when attaching volume to VM

Dear Ceph Community, We are trying to integrate Ceph with OpenStack, and facing certificate issues when attaching a Cinder volume to a Nova vm. We have the environment variable OS_CACERT set to the correct certificate address, which is read to set cacert. The certificate is verified successful