On 17/12/1 上午10:38, Michael Lyle wrote:
> On 11/30/2017 06:30 PM, 彭良彦 wrote:
>> If the cache device is not persistent like ramdisk, all data will be lost after reboot. We have to use make-bcache to fix the inconsistent super block of backing device.
>
> Using a non-persistent writeback cache is guaranteed to lose data.
> (Writes will only go to the cache device and not make it to the
> persistent volume).
>
> Mike
If we use ramdisk as a writethrough cache to improve the read performance, the backing device is a network disk, the super block state of backing device still has chance to be inconsistent due to disconnected network. Like in above reproduce steps, i didn't use a cache device. :-)��.n��������+%������w��{.n�����{���{ay� ʇڙ���f���h������_�(�階�ݢj"��������G����?���&��
