Hello, We should not touch the mount propagation of the host’s namespace. Instead, we should create our own mount namespace and that should be private. You can however try to see what happens when you add —-propagation=slave to the first unshare command. I just installed the plain Ubuntu Server, installed git, checkout out the repository, downloaded the toolchain and ran the build. -Michael > On 3 Aug 2024, at 12:22, Matthias Fischer wrote: > > On 03.08.2024 10:54, Michael Tremer wrote: >> Hello Matthias, > > Hi Michael, > > just looked through https://man7.org/linux/man-pages/man1/unshare.1.html > and ran 'findmnt -o+PROPAGATION' (see attachment). > > I don't know if this could help but does this differ from your test > installation? > > Best > Matthias > >>> On 3 Aug 2024, at 08:47, Matthias Fischer wrote: >>> >>> Hi Michael, >>> >>> [shortened some stuff] >>> >>> ... >>> >>>>>>> >>>>>>> Being curious I tried to build 'next', but I always get the same error: >>>>>>> >>>>>>> ***SNIP*** >>>>>>> root(a)Devel64-1: /git/ipfire-2.x # ./make.sh build >>>>>>> Packaged toolchain compilation >>>>>>> Building IPFire >>>>>>> stage2 >>>>>>> Jul 26 13:32:59: Building stage2 unshare: cannot change >>>>>>> /git/ipfire-2.x/build_x86_64/proc filesystem propagation: Invalid argument >>> >>>>>> ... >>> >>>> It looks like you can simply update the kernel staying on the same release: >>>> >>>> https://ubuntu.com/security/livepatch/docs/livepatch/reference/kernels >>>> >>>> For 22.04 LTS, there is a Linux 6.8 image available. >>>> >>>> Could you check that and confirm that it fixes the mount propagation problem? >>> >>> Done. >>> >>> Current state is as follows: >>> >>> ***SNIP*** >>> ... >>> root(a)Devel64-1: /git/ipfire-2.x # lsb_release -a >>> No LSB modules are available. >>> Distributor ID: Ubuntu >>> Description: Ubuntu 22.04.4 LTS >>> Release: 22.04 >>> Codename: jammy >>> ... >>> root(a)Devel64-1: /git/ipfire-2.x # uname -mrs >>> Linux 6.8.0-39-generic x86_64 >>> ... >>> ***SNAP*** >>> >>> But when I try to build 'next' I get exactly the same error as >>> before: >>> >>> ***SNIP*** >>> root(a)Devel64-1: /git/ipfire-2.x # ./make.sh build >>> Packaged toolchain compilation >>> Building IPFire >>> stage2 >>> Aug 2 21:21:15: Building stage2 unshare: cannot change >>> /git/ipfire-2.x/build_x86_64/proc filesystem propagation: Invalid argument >> >> Ah, this is good information. So it is not the kernel, it rather is Ubuntu handling something differently. >> >> I will have a look at this and get back to you. >> >>> ERROR: Downloading stage2 >>> [ FAIL ] >>> Check /git/ipfire-2.x/log_x86_64/_build.ipfire.log for errors if >>> applicable [ FAIL ] >>> ***SNAP*** >>> >>> Being curious, I commented line line 633 in 'make.sh' >>> ("--mount-proc=${BUILD_DIR}/proc") => Building starts but fails during >>> 'glib 2.77.0': >>> >>> ***SNIP*** >>> ... >>> glib (2.77.0) >>> [ 1:14 ][0/1011] >>> >>> [951/1374] Compiling C object gio/gio.p/gio-tool-tree.c.o >>> [952/1374] Linking target gio/gio >>> [953/1374] Compiling C object >>> gio/gio-querymodules.p/gio-querymodules.c.o >>> [954/1374] Linking target gio/gio-querymodules >>> [955/1374] Compiling C object gio/gresource.p/gresource-tool.c.o >>> [956/1374] Compiling C object >>> gio/glib-compile-schemas.p/.._subprojects_gvdb_gvdb_gvdb-reader.c.o >>> [957/1374] Linking target gio/gresource >>> [958/1374] Compiling C object >>> gio/glib-compile-schemas.p/.._subprojects_gvdb_gvdb_gvdb-builder.c.o >>> [959/1374] Compiling C object >>> gio/glib-compile-resources.p/.._subprojects_gvdb_gvdb_gvdb-reader.c.o >>> [960/1374] Compiling C object >>> gio/glib-compile-resources.p/.._subprojects_gvdb_gvdb_gvdb-builder.c.o >>> [961/1374] Compiling C object >>> gio/glib-compile-resources.p/glib-compile-resources.c.o >>> [962/1374] Linking target gio/glib-compile-resources >>> [963/1374] Compiling C object >>> gio/tests/modules/libtestmodulea.so.p/test-module-a.c.o >>> [964/1374] Compiling C object gio/gapplication.p/gapplication-tool.c.o >>> [965/1374] Compiling C object gio/gsettings.p/gsettings-tool.c.o >>> [966/1374] Linking target gio/tests/modules/libtestmodulea.so >>> [967/1374] Generating gio/tests/plugin-resources.c with a custom command >>> FAILED: gio/tests/plugin-resources.c >>> /usr/src/glib-2.77.0/builddir/gio/glib-compile-resources >>> --compiler=gcc --target=gio/tests/plugin-resources.c --sour >>> cedir=/usr/src/glib-2.77.0/gio/tests --internal --generate-source >>> --c-name _g_plugin ../gio/tests/test4.gresource.xml >>> /usr/src/glib-2.77.0/builddir/gio/glib-compile-resources: error >>> while loading shared libraries: libgio-2.0.so.0: can >>> not open shared object file: No such file or directory >>> [968/1374] Linking target gio/gapplication >>> [969/1374] Compiling C object >>> gio/glib-compile-schemas.p/glib-compile-schemas.c.o >>> [970/1374] Linking target gio/gsettings >>> [971/1374] Compiling C object >>> gio/tests/modules/libtestmoduleb.so.p/test-module-b.c.o >>> [972/1374] Compiling C object >>> gio/tests/gdbus-overflow.p/gdbus-overflow.c.o >>> [973/1374] Compiling C object gio/gdbus.p/gdbus-tool.c.o >>> [974/1374] Compiling C object >>> gio/tests/gdbus-object-manager-example/libgdbus-example-objectmanager.so.p/meson-gener >>> ated_.._objectmanager-gen.c.o >>> ninja: build stopped: subcommand failed. >>> make: *** [glib:75: /usr/src/log/glib-2.77.0] Error 1 >>> make: Leaving directory '/usr/src/lfs' >>> >>> ERROR: Building glib >>> [ FAIL ] >>> Check /git/ipfire-2.x/log_x86_64/_build.ipfire.log for errors if >>> applicable [ FAIL ] >>> ***SNAP*** >>> >>> Best >>> Matthias >>