David Boyd
2015-Apr-21 14:46 UTC
AUTOFS (automount) and NFS server not playing together nicely
At the risk of being dubbed insane, here goes: On five FreeBSD 10.1-RELEASE-p9 production servers autofs(5) is enabled and working as advertised. On the same servers nfs v3 clients are also fat, dumb and happy. On a test server where autofs(5) is also enabled and working well, I am testing nfs v3 (later v4) server. Strange things are happening. When nfs mountd(8) is running, the autofs(5) auto-mount (via automountd) function seems to work, but the autofs(5) auto-unmount (via autounmountd) never occurs. Without nfs mountd(8), when the filesystem /disc is auto-mounted (via autoumountd), the mount(8) command shows status of (ufs, local, journaled soft-updates, auto-mounted) for the auto-mounted filesystem and after the autofs(5) timeout period (600 seconds) the filesystem is auto-unmounted (via autounmountd). No problem. With nfs mountd(8) the mount(8) command shows (ufs, local, journaled soft-updates). The auto-mounted filesystem is never (a long, long time) unmounted. Big problem. Without nfs mountd(8) running, the mount(8) command "mount -o automounted /dev/ada0p8 /disc" mounts the filesystem and the mount(8) command shows (ufs, local, journaled soft-updates, automounted) for the manually mounted filesystem and after the autofs(5) timeout period (600 seconds) the filesystem is auto-unmounted even though it was not mounted automatically. No problem. With nfs mountd(8), the mount(8) command "mount -o automounted /dev/ada0p8 /disc" mounts the filesystem but the mount(8) command shows (ufs, local, journaled soft-updates) and after the timeout period (600 seconds) the filesystem is remains mounted. Big problem. It appears that nfs mountd(8) is interferring with the mount(8) command's -o option processing but admittedly that is just a very weak SWAG. I have adequate hardware (real and virtual) to do any testing that may be suggested. Most days there is no time constraint either. -------------------------------------------------------- The /etc/auto_master file is two lines: 1:/net -hosts -nobrowse,nosuid (original) 2:/- /etc/autofs/auto_disc -------------------------------------------------------- The /etc/autofs/auto_disc file is one line: 1:/disc -fstype=ufs :/dev/ada0p8 -------------------------------------------------------- Once again, everything works well when nfs mountd(8) is not present in the system. Thanks for any assistance that you may be able to supply. David Boyd.