Package: release.debian.org Severity: normal Tags: bookworm User: release.debian....@packages.debian.org Usertags: pu X-Debbugs-Cc: l...@packages.debian.org, alk...@gmail.com, vagr...@debian.org Control: affects -1 + src:ltsp
While prepare the initial Debian Edu 12 release, we came across a problem in LTSP. Thin client machines and diskless workstations started failing to boot from NFS-located chroot environments. [ Reason ] The underlying cause is a regression in the linux kernel since version 5.15 (see #1049885 [1]) for details. [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1049885 A workaround could be found for LTSP in Debian 12 (it is not just a Debian Edu problem). This upload provides this workaround and brings back above named functionality (PXE-booting Debian systems via LTSP when the system is a chroot tree on NFS). [ Impact ] LTSP with rootfs on NFS stays broken. [ Tests ] Manual tests on a Debian Edu 12 network. [ Risks ] Another regression might have been introduced into LTSP with that workaround. [ Checklist ] [x] *all* changes are documented in the d/changelog [x] I reviewed all changes and I approve them [x] attach debdiff against the package in (old)stable [x] the issue is verified as fixed in unstable [ Changes ] + * debian/patches: + + Add 0001_Avoid-mv-on-init-symlink-in-order-to-work-around-ove.patch + (cherry-picked from upstream). Avoid mv on init symlink in order to + work around overlayfs issue. (Closes: #1049397). [ Other info ] This issue has been discussed with and approved by LTSP upstream. See: https://github.com/ltsp/ltsp/issues/860#issuecomment-1682047744
diff -Nru ltsp-23.02/debian/changelog ltsp-23.02/debian/changelog --- ltsp-23.02/debian/changelog 2023-02-28 04:27:32.000000000 +0100 +++ ltsp-23.02/debian/changelog 2023-08-19 17:33:29.000000000 +0200 @@ -1,3 +1,12 @@ +ltsp (23.02-1+deb12u1) bookworm; urgency=medium + + * debian/patches: + + Add 0001_Avoid-mv-on-init-symlink-in-order-to-work-around-ove.patch + (cherry-picked from upstream). Avoid mv on init symlink in order to + work around overlayfs issue. (Closes: #1049397). + + -- Mike Gabriel <sunwea...@debian.org> Sat, 19 Aug 2023 17:33:29 +0200 + ltsp (23.02-1) unstable; urgency=medium * Match both memtest86+x32.bin and memtest86+ia32.bin (#801) diff -Nru ltsp-23.02/debian/patches/0001_Avoid-mv-on-init-symlink-in-order-to-work-around-ove.patch ltsp-23.02/debian/patches/0001_Avoid-mv-on-init-symlink-in-order-to-work-around-ove.patch --- ltsp-23.02/debian/patches/0001_Avoid-mv-on-init-symlink-in-order-to-work-around-ove.patch 1970-01-01 01:00:00.000000000 +0100 +++ ltsp-23.02/debian/patches/0001_Avoid-mv-on-init-symlink-in-order-to-work-around-ove.patch 2023-08-19 17:33:29.000000000 +0200 @@ -0,0 +1,31 @@ +From 19ccbb7c4a5daeebacb4157bea772e26c3fb0f44 Mon Sep 17 00:00:00 2001 +From: gber <guido+github....@berhoerster.name> +Date: Thu, 17 Aug 2023 09:45:49 +0200 +Subject: [PATCH] Avoid mv on init symlink in order to work around overlayfs + issue (#860) + +Signed-off-by: Mike Gabriel <mike.gabr...@das-netzwerkteam.de> +--- + ltsp/client/initrd-bottom/55-initrd-bottom.sh | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +diff --git a/ltsp/client/initrd-bottom/55-initrd-bottom.sh b/ltsp/client/initrd-bottom/55-initrd-bottom.sh +index 633ef47..bf68ae0 100644 +--- a/ltsp/client/initrd-bottom/55-initrd-bottom.sh ++++ b/ltsp/client/initrd-bottom/55-initrd-bottom.sh +@@ -73,8 +73,10 @@ install_ltsp() { + fi + # To avoid specifying an init=, we override the real init. + # We can't mount --bind as it's in use by libraries and can't be unmounted. +- re mv "$rootmnt/sbin/init" "$rootmnt/sbin/init.ltsp" +- re ln -s ../../usr/share/ltsp/client/init/init "$rootmnt/sbin/init" ++ # With Linux 6.1 rename(2) on the symlink fails with ENXIO, so do not use ++ # mv for now (see #860). ++ re cp -a "$rootmnt/sbin/init" "$rootmnt/sbin/init.ltsp" ++ re ln -sf ../../usr/share/ltsp/client/init/init "$rootmnt/sbin/init" + # Jessie needs a 3.18+ kernel and this initramfs-tools hack: + if grep -qs jessie /etc/os-release; then + echo "init=${init:-/sbin/init}" >> /scripts/init-bottom/ORDER +-- +2.39.2 + diff -Nru ltsp-23.02/debian/patches/README ltsp-23.02/debian/patches/README --- ltsp-23.02/debian/patches/README 1970-01-01 01:00:00.000000000 +0100 +++ ltsp-23.02/debian/patches/README 2023-08-19 17:33:29.000000000 +0200 @@ -0,0 +1,3 @@ +0xxx: Grabbed from upstream development. +1xxx: Possibly relevant for upstream adoption. +2xxx: Only relevant for official Debian release. diff -Nru ltsp-23.02/debian/patches/series ltsp-23.02/debian/patches/series --- ltsp-23.02/debian/patches/series 2023-02-28 04:27:32.000000000 +0100 +++ ltsp-23.02/debian/patches/series 2023-08-19 17:33:29.000000000 +0200 @@ -0,0 +1 @@ +0001_Avoid-mv-on-init-symlink-in-order-to-work-around-ove.patch