Recently , I want to enable rbd cache to identify performance benefit. I add
rbd_cache=true option in my ceph configure file, I use 'virsh attach-device' to
attach rbd to vm, below is my vdb xml file.
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I do not know this i
On 11/25/2013 07:21 AM, Shu, Xinxin wrote:
Recently , I want to enable rbd cache to identify performance benefit. I
add rbd_cache=true option in my ceph configure file, I use ’virsh
attach-device’ to attach rbd to vm, below is my vdb xml file.
Ceph configuration files are a bit confusing becaus
On Mon, Nov 25, 2013 at 5:58 AM, Mark Nelson wrote:
> On 11/25/2013 07:21 AM, Shu, Xinxin wrote:
>>
>> Recently , I want to enable rbd cache to identify performance benefit. I
>> add rbd_cache=true option in my ceph configure file, I use ’virsh
>> attach-device’ to attach rbd to vm, below is my vd
Greg is right, you need to enable RBD admin sockets. This can be a bit
tricky though, so here are a few tips:
1) In ceph.conf on the compute node, explicitly set a location for the
admin socket:
[client.volumes]
admin socket = /var/run/ceph/rbd-$pid.asok
In this example, libvirt/qemu is
Re: [ceph-users] how to enable rbd cache
Greg is right, you need to enable RBD admin sockets. This can be a bit tricky
though, so here are a few tips:
1) In ceph.conf on the compute node, explicitly set a location for the admin
socket:
[client.volumes]
admin socket = /var/run/ceph/rbd-$pid.aso
ter(l_objectcacher_cache_ops_hit, "cache_ops_hit");
plb.add_u64_counter(l_objectcacher_cache_ops_miss, "cache_ops_miss");
plb.add_u64_counter(l_objectcacher_cache_bytes_hit, "cache_bytes_hit");
plb.add_u64_counter(l_objectcacher_cache_bytes_miss, "cache_bytes_mi
