On Feb 10, 2026, at 8:27 PM, Paul Vixie <[email protected]> wrote: > > Do both p9fs and virtiofs both support mmap() such that two or more guests, > and the host, can all map a file on the host for read/write access, and each > see writes made by the others? This is my pain point with nfs and smb.
At least read-access works fine in p9fs. Haven't tried anything else. I suspect writes would be not seen across VMs (at least for p9fs). For that to work you'd have to map the same host page in both VMs. > Is either one as lightweight as zvol and ufs, such that I could consider > using it for the os? > > I appreciate all the effort both teams have put in. > Paul Vixie
