On Wed, May 01, 2019 at 08:53:18AM -0600, James Gritton wrote: > On 2019-04-30 12:03, squiggly foo wrote: > > Hi All, > > > > I use the mount.fstab parameter to mount a number of file systems > > before starting a jail which works without any problem. However since > > it is an application jail, there are no other processes running inside > > the jail other than the one application. As soon as that application > > terminates the jail is removed by the host. > > > > This is actually my preferred behavior; I want the jail to be removed > > when the process inside of it terminates. But the problem is that the > > mount points are not unmounted after the jail is removed that way. > > The only way I can get the jails to unmount is if I do a "jail -r > > jailname" which is what I want to avoid as I would not do that while > > the process inside the jail is still running. > > > > > > Does anyone know of a way for the jails to umount the mount points in > > its fstab file when the only process inside the jail exits? > > No easy way. Those filesystems have to be unmounted by somebody; the > jail can't do it because it doesn't have the permission (because it > didn't > mount them). So some process needs to be watching to see when the jail > goes away. That would be some kind of watcher that wakes up > occasionally > and sees if the jail is still there. It might be nice to have some > kqueue > support for jails.
Maybe I'm not understanding the problem. Is there a reason why exec.poststop="umount -aF /whatever/jail.fstab" won't do the trick? ==ml -- Michael W. Lucas https://mwl.io/ author of: Absolute OpenBSD, SSH Mastery, git commit murder, Immortal Clay, PGP & GPG, Absolute FreeBSD, etc, etc, etc... _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-jail To unsubscribe, send any mail to "[email protected]"
