Re: [ceph-users] Instance filesystem corrupt

in ceph So that explains why restarting the vm later solvs the problem. On Friday, 28 October 2016, Ahmed Mostafa <ahmedmostafa...@gmail.com> wrote: > So i couldn't actually wait till the morning > > I sat rbd cache to false and tried to create the same number of instances, >

Re: [ceph-users] Instance filesystem corrupt

can result in read corruption that affects hammer and prior > releases. > > [1] http://tracker.ceph.com/issues/16002 > > On Thu, Oct 27, 2016 at 1:34 AM, Ahmed Mostafa <ahmedmostafa...@gmail.com> > wrote: > >> This is more or less the same bahaviour i have in ky environme

[ceph-users] Qcow2 and RBD Import

Hello, Going through the documentation I am aware that I should be using RAW images instead of Qcow2 when storing my images in ceph. I have carried a small test to understand how this is going. [root@ ~]# qemu-img create -f qcow2 test.qcow2 100G Formatting 'test.qcow2', fmt=qcow2

Re: [ceph-users] Instance filesystem corrupt

This is more or less the same bahaviour i have in ky environment By any chance is anyone running their osds and their hypervisors on the same machine ? And could high workload, like starting 40 - 60 or above virtual machines have an effect on this problem ? On Thursday, 27 October 2016,

Re: [ceph-users] Instance filesystem corrupt

Actually i have the same problem when starting an instance backed up by librbd But this only happens when trying to start 60+ instance But I decided that this is due to the fact that we are using old hardware that is not able to respond to high demand. Could that be the same issue that you are

Re: [ceph-users] ceph on two data centers far away

May i ask how are your two data centers are connected together ? On Thursday, 20 October 2016, yan cui wrote: > The two data centers are actually cross US. One is in the west, and the > other in the east. > We try to sync rdb images using RDB mirroring. > > 2016-10-20 9:54

Re: [ceph-users] qemu-rbd and ceph striping

er, if you were to use a > small stripe unit that matched your normal IO size (or a small > multiple thereof), your small, sequential IO requests would be sent to > PGs -- spreading the load. > > On Wed, Oct 19, 2016 at 12:32 PM, Ahmed Mostafa > <ahmedmostafa...@gmail.com

[ceph-users] qemu-rbd and ceph striping

Hello >From the documentation i understand that clients that uses librados must perform striping for themselves, but i do not understand how could this be if we have striping options in ceph ? i mean i can create rbd images that has configuration for striping, count and unite size. So my