Here's my file /etc/exports: nhh221 /var/tmp # cat /etc/exports # /etc/exports: NFS file systems being exported. See exports(5). /var/log nhh221_uml(ro,sync) /var/tmp nhh221_uml(rw,sync,all_squash) If I mount /var/tmp under my UML - Client with the following /etc/fstab: nhh221 /var/tmp # mount -o loop /share/root_fs /mnt/loop0/ nhh221 /var/tmp # grep var /mnt/loop0/etc/fstab nhh221:/var/log /mnt/nfs/log nfs noauto,defaults,soft 0 0 nhh221:/var/tmp /mnt/nfs/tmp nfs noauto,defaults,soft 0 0 and made a nhh221_uml root # touch /mnt/nfs/tmp/l inside of my UML, I got on the host: nhh221 /var/tmp # ls -l /var/tmp/l -rw-r--r-- 1 4294967294 4294967294 0 Nov 25 13:52 /var/tmp/l that means instead of -2 the 2-complement 2^32 - 1 is displayed. With positive numbers for anonuid and anongid there is no problem. Here are some more info: nhh221 /var/tmp # uname -a Linux nhh221 2.6.9-gentoo-r6 #2 Thu Nov 25 12:21:46 CET 2004 i686 Intel(R) Pentium(R) M processor 1.70GHz GenuineIntel GNU/Linux nhh221 /var/tmp # qpkg -I -v -nc nfs net-fs/nfs-utils-1.0.6-r4 As usermode linux I use sys-kernel/usermode-sources-2.6.8.1-r4 Reproducible: Always Steps to Reproduce: 1. 2. 3. Portage 2.0.51-r3 (default-linux/x86/2004.3, gcc-3.3.4, glibc-2.3.4.20040808-r1, 2.6.9-gentoo-r6 i686) ================================================================= System uname: 2.6.9-gentoo-r6 i686 Intel(R) Pentium(R) M processor 1.70GHz Gentoo Base System version 1.4.16 Autoconf: sys-devel/autoconf-2.59-r5 Automake: sys-devel/automake-1.8.5-r1 Binutils: sys-devel/binutils-2.15.90.0.1.1-r3 Headers: sys-kernel/linux-headers-2.4.21-r1 Libtools: sys-devel/libtool-1.5.2-r7 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-O2 -march=pentium3 -pipe -mfpmath=sse -msse2 -mmmx" CHOST="i686-pc-linux-gnu" COMPILER="" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/share/config /usr/lib/mozilla/defaults/pref /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O2 -march=pentium3 -pipe -mfpmath=sse -msse2 -mmmx" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms" GENTOO_MIRRORS="http://www.gigaload.org/gentoo.org/ http://ftp.snt.utwente.nl/pub/os/linux/gentoo ftp://linux.rz.ruhr-uni-bochum.de/gentoo-mirror/ ftp://ftp.snt.utwente.nl/pub/os/linux/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X acpi alsa apm arts avi berkdb bitmap-fonts cddb cdparanoia cdr crypt cups doc dvd dvdr dvdread encode esd ethereal f77 fam foomaticdb fortran gdbm gif gnome gpm gstreamer gtk gtk2 imagemagick imlib innodb java joystick jpeg junit kde libg++ libwww live mad mbox mikmod mmx mmx2 motif mozilla mpeg mysql nagios-dns nagios-ntp nagios-ping nagios-s ncurses network nls oggvorbis opengl oss pam pcmcia pdflib perl png python qt quicktime readline samba sdl slang snmp spell sse sse2 ssl svga tcltk tcpd tetex tiff truetype x86 xml2 xmms xv zlib linguas_de"
oops, inode numbers are unsigned, I misinterpreted the manual page of exports
