[pve-devel] Default cache mode for VM hard drives

[Stanislav German-Evtushenko]

Eneko,

> Note that without O_DIRECT you won't get a "correct" result either; disk
> may end not containing the data in the buffer when write was called.
> Softmirror data will be identically uncertain :)

You are right. That is why I suppose there is a bug (operations with
buffer are not ensured to be thread-safe) in QEMU-KVM.

Stanislav