Hi Burkhard,
I seemed to have missed that part but even though allowing access (rwx) to the cache pool it still has a similar (not same) problem. The VM process starts but it looks more like a dead or stuck process trying forever to start and has high CPU (for the qemu-system-x86 process). When I kill the process, as it never times out, I get the following error.
internal error: early end of file from monitor: possible problem: libust[6583/6583]: Warning: HOME environment variable not set. Disabling LTTng-UST per-user tracing. (in setup_local_apps() at lttng-ust-comm.c:305) libust[6583/6584]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886) libust[6583/6584]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886) libust[6583/6584]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886) libust[6583/6584]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886) libust[6583/6584]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886) libust[6583/6584]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886) libust[6583/6584]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:886)
I understand that there is something similar on launchpad and some replies refer to hammer disabling the feature causing the error with "lttng-ust-wait-5" but I still seem to get it.
Thanks
Pieter
On Aug 05, 2015, at 01:42 PM, Burkhard Linke <Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Hi,
On 08/05/2015 02:13 PM, Pieter Koorts wrote:Hi All,This seems to be a weird issue. Firstly all deployment is done with "ceph-deploy" and 3 host machines acting as MON and OSD using the Hammer release on Ubuntu 14.04.3 and running KVM (libvirt).When using vanilla CEPH, single rbd pool no log device or cache tiering, the virtual machine will start without any problem. I can see CEPH doing data work and the virtual machine runs the OS installer fine.However when I enable cache tiering so that I have a separate RBD and SSD pool, libvirt is unable to start and virtual machines at all with an error of a feature I think CEPH disabled (not sure). This is entirely repeatable as I did re-installs of software and even the operating system.I'm not sure if it is CEPH in this case but it only seems to happen when doing cache tiering which leads me to believe it has some of the blame.
*snipsnap*
Did you grant access to the cache tier pool for the libvirt ceph user?
Best regards,
Burkhard
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