(1) ceph 修改 ceph.conf, 配置參考如下:
rbd_cache = true
rbd_cache_size = 10737418240
rbd_cache_max_dirty = 10737418240
rbd_cache_target_dirty = 10737418240
rbd_cache_writethrough_until_flush = false
rbd_cache_max_dirty_age = 100
(2) qemu 修改 xml 配置, 參考如下:
<driver name='qemu' type='raw' cache='writeback'/>
以上僅供測試參考