+# for new btrfs features, get latest stable kernel and btrfs progs,
+# update ver= as needed.
+case $HOSTNAME in
+ sy)
+ mkdir -p $FAI_ROOT/tmp/kernel-debs
+ files=($FAI_ROOT/tmp/kernel-debs/*)
+ if (( ${#files[@]} >= 1 )); then
+ rm -rf "${files[@]}"
+ fi
+ cd $FAI_ROOT/tmp/kernel-debs
+ ver='6\.6'
+ va=$(curl -s https://kernel.ubuntu.com/mainline/ | \
+ sed -rn 's,.*alt="\[DIR\]".*href="([^/]+).*,\1,p' | \
+ grep -v -- -rc | sed 's/^v//' | grep "^$ver" | sort -V | tail -n1)
+
+ # note the wiki page about these says to install linux-headers.*generic.*amd64, but
+ # as of 2024, they have a requirement of a very new glibc, and people report
+ # that installing it is not needed.
+ pkgs=$(curl -s https://kernel.ubuntu.com/mainline/v$va/amd64/CHECKSUMS | awk '$2 ~ /^linux-/ { print $2 }' | sort -u | grep -iv 'linux-headers.*generic.*amd64' )
+
+ urls=()
+ for p in $pkgs; do
+ if ! dpkg -s -- "${p%%_*}" 2>&1 | grep -Fx "Status: install ok installed" &>/dev/null; then
+ urls+=(https://kernel.ubuntu.com/mainline/v$va/amd64/$p)
+ fi
+ done
+ if (( ${#urls[@]} >= 1 )); then
+ wget "${urls[@]}"
+ $chroot bash <<EOF
+cd /tmp/kernel-debs
+dpkg -i *.deb
+EOF
+ fi
+ ;;
+ *)
+ $chroot apt-get -y install linux-libre
+ ;;
+esac
+
+pre=https://mirrors.edge.kernel.org/pub/linux/kernel/people/kdave/btrfs-progs
+tarball=$(curl -s $pre/sha256sums.asc \
+ | awk '$2 ~ /^btrfs-progs-v/ { print $2 }' | grep -v -- -rc | grep "^btrfs-progs-v${ver}.*gz\$" | sort -V | tail -n1)
+url="$pre/$tarball"
+dir=${tarball%.tar.gz}
+ver=${dir#btrfs-progs}
+cur_ver=$(btrfs --version 2>/dev/null | awk '{print $2}') ||:
+if [[ $ver != "$cur_ver" ]]; then
+ if [[ $HOST2 == $HOSTNAME && $ver != "$($bprogs_dir/btrfs --version 2>/dev/null | awk '{print $2}')" ]]; then
+ rm -rf $bprogs_dir
+ cd /tmp
+ wget $url
+ sudo -u iank tar xzf $tarball
+ mv ${tarball%.tar.gz} $bprogs_dir
+ cd $bprogs_dir
+ apt-get -y build-dep btrfs-progs
+ sudo -u iank ./configure --disable-documentation
+ sudo -u iank make
+ make install
+ else
+ $chroot bash -xe <<EOF
+cd $bprogs_dir
+make install
+EOF
+ fi
+fi
+