Re: [libvirt-users] (Live) Migration safe vs. unsafe
On 04/03/2017 10:07 AM, Michael Hierweck wrote:
Hi all,
virsh checks whether a (live) migration is safe or unsafe. When a
migration is considered to be unsafe it is rejected unless the --unsafe
option is prodivided.
As a part of those checks virsh considers the cache settings for the
underlying storage resources. In this context only cache="none" is
considered to be safe.
I wonder why cache="directsync" might be harmfull as it bypasses the
host page cache completely.
That's a good question. I too think it isn't harmful. Maybe it's a bug
in our code?
Michal