Package: user-mode-linux Version: 2.6.32-1um-4+35squeeze2 Severity: normal Mounting of a nfs (v3) folder in an uml host fails with the following error: # mount -v localhost:/srv /mnt mount: no type was given - I'll assume nfs because of the colon mount.nfs: timeout set for Wed Dec 7 16:32:14 2011 mount.nfs: trying text-based options 'vers=4,addr=127.0.0.1,clientaddr=127.0.0.1' NFS: bad mount option value specified: vers=4 mount.nfs: mount(2): Invalid argument mount.nfs: trying text-based options 'vers=4,addr=127.0.0.1,clientaddr=127.0.0.1' NFS: bad mount option value specified: vers=4 mount.nfs: mount(2): Invalid argument mount.nfs: an incorrect mount option was specified
Manually specifying -o vers=3 as the mount parameter works around the issue. When I manually recompile the kernel to include support for NFSv4 (I added both nfs server and nfs client, but maybe only client would suffice) the problem disappers (even though the folder is still exported as NFSv3). My guess is that the mount.nfs helper expects (because it was built against the "normal" debian kernel, which supports v4) that the kernel knows what v4 is and when that assumption fails, it goes berserk. I recommend includint the support for nfs4 in the uml kernel, to make it behave more like the default kernel. This will fix the issue, but it still might be a good idea to notify (nfs) upstream and let them know their that the mount helper is not very "robust". -- System Information: Debian Release: 6.0.2 APT prefers stable APT policy: (500, 'stable') Architecture: i386 (i686) Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages user-mode-linux depends on: ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib ii uml-utilities 20070815-1.1 User-mode Linux (utility programs) user-mode-linux recommends no packages. Versions of packages user-mode-linux suggests: pn rootstrap <none> (no description available) pn slirp <none> (no description available) ii user-mode-linux-doc 20060501-1 User-mode Linux (Documentation) pn vde2 <none> (no description available) pn x-terminal-emulator <none> (no description available) -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
