; 在 2014年8月22日，22:52，Haomai Wang 写道：
>
> Seriously it's safe to use rbd cache for vm. Rbd cache behavior like
> disk cache which is flushed via "fsync" or "fdatasync" calls.
> A serious application will take care of it.
>
> On Fri, Aug 22, 20
iers supported is maybe not implemented in virtio devices,lvm,dm raid
> and some filesystem,
> depend of the kernel version.
>
> Not sure what is backported in rhel5 kernel
>
>
> see
> http://monolight.cc/2011/06/barriers-caches-filesystems/
>
>
>
> ---
ybody give some
suggestion? Really appreciate your help.
Yufang
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