Re: [Qemu-devel] disk cache question and drawback of cache

2014-04-16 Thread Fam Zheng
On Wed, 04/16 22:07, longguang.yue wrote: > hi,all > libvirt supply "default", "none", "writethrough", "writeback", "directsync", > "unsafe" disk cache options > > > 1. > as for qemu, how qemu uses those options? and what are the differences? > better tell me where are the codes correspond

[Qemu-devel] disk cache question and drawback of cache

2014-04-16 Thread longguang.yue
hi,all libvirt supply "default", "none", "writethrough", "writeback", "directsync", "unsafe" disk cache options 1. as for qemu, how qemu uses those options? and what are the differences? better tell me where are the codes corresponding to those options? 2. after a long time of running