Hello,
Am 02.07.2012 22:30, schrieb Josh Durgin:
If you add admin_socket=/path/to/admin_socket for your client running
qemu (in that client's ceph.conf section or manually in the qemu
command line) you can check that caching is enabled:
ceph --admin-daemon /path/to/admin_socket show config | grep rbd_cache
And see statistics it generates (look for cache) with:
ceph --admin-daemon /path/to/admin_socket perfcounters_dump
This doesn't work for me:
ceph --admin-daemon /var/run/ceph.sock show config
read only got 0 bytes of 4 expected for response length; invalid
command?2012-07-03 09:46:57.931821 7fa75d129700 -1 asok(0x8115a0)
AdminSocket: request 'show config' not defined
Also perfcounters does not show anything:
# ceph --admin-daemon /var/run/ceph.sock perfcounters_dump
{}
~]# ceph -v
ceph version 0.48argonaut-2-gb576faa
(commit:b576faa6f24356f4d3ec7205e298d58659e29c68)
Stefan
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