Kevin Wolf <kw...@redhat.com> wrote: > Am 09.11.2011 20:16, schrieb Juan Quintela: >> Linux allows to invalidate block devices. This is needed for the incoming >> migration part. >> >> Signed-off-by: Juan Quintela <quint...@redhat.com> > > I think Christoph said that this ioctl kills ramdisks? Or was that > something different?
On patch 0/2 I said that I was not proposing this. That this "kind" of fixed the problem for iscsi and linux, but that it is not "reliable". Patch 2/2 was to start discussion, and to show the problem we had to fix, not a "solution". As said during the discussion: - clustered filesystems: they are good - non-coherentent shared storage (NFS, iSCSI, ...): needs cache=none, anything else is insane - formats (qcow2): needs reopen, or at least reload metadata. And the discussion is how to go from here. Later, Juan.
