Backports repository provides packages for stable system that are recompiled from testing or unstable distribution. It is important to know that these packages are provided as is without any security support guarantee.
Configure backports repository
Add stretch-backports repository.
$ cat <<EOF | sudo tee /etc/apt/sources.list.d/stretch-backports.list deb http://http.debian.net/debian stretch-backports main contrib non-free EOF
deb http://http.debian.net/debian stretch-backports main
Update package index.
$ sudo apt-get update
Install packages directly from backports repository
Display available package versions.
$ apt-cache policy zfs-dkms
zfs-dkms:
Installed: (none)
Candidate: 0.6.5.11-1~bpo9+1
Version table:
0.6.5.11-1~bpo9+1 100
100 http://http.debian.net/debian stretch-backports/contrib amd64 Packages
Backports repository has priority of 100. It is a default value since squeeze-backports, so it will be ignored during standard operations as distribution packages have priority of 500.
Specify defined earlier repository on the command-line to install package and its dependencies directly from backports repository.
$ sudo apt-get install -t stretch-backports zfs-dkms --dry-run Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: binutils cpp cpp-6 dkms fakeroot gcc gcc-6 libasan3 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libfakeroot libgcc-6-dev libgomp1 libisl15 libitm1 liblsan0 libmpc3 libmpfr4 libmpx2 libnvpair1linux libquadmath0 libtsan0 libubsan0 libuutil1linux libzfs2linux libzpool2linux linux-compiler-gcc-6-x86 linux-headers-4.13.0-0.bpo.1-amd64 linux-headers-4.13.0-0.bpo.1-common linux-headers-amd64 linux-kbuild-4.13 linux-libc-dev make manpages manpages-dev patch spl spl-dkms zfs-zed zfsutils-linux Suggested packages: binutils-doc cpp-doc gcc-6-locales python3-apport menu gcc-multilib autoconf automake libtool flex bison gdb gcc-doc gcc-6-multilib gcc-6-doc libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan3-dbg liblsan0-dbg libtsan0-dbg libubsan0-dbg libcilkrts5-dbg libmpx2-dbg libquadmath0-dbg glibc-doc make-doc ed diffutils-doc nfs-kernel-server samba-common-bin zfs-initramfs | zfs-dracut The following NEW packages will be installed: binutils cpp cpp-6 dkms fakeroot gcc gcc-6 libasan3 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libfakeroot libgcc-6-dev libgomp1 libisl15 libitm1 liblsan0 libmpc3 libmpfr4 libmpx2 libnvpair1linux libquadmath0 libtsan0 libubsan0 libuutil1linux libzfs2linux libzpool2linux linux-compiler-gcc-6-x86 linux-headers-4.13.0-0.bpo.1-amd64 linux-headers-4.13.0-0.bpo.1-common linux-headers-amd64 linux-kbuild-4.13 linux-libc-dev make manpages-dev patch spl spl-dkms zfs-dkms zfs-zed zfsutils-linux The following packages will be upgraded: manpages 1 upgraded, 43 newly installed, 0 to remove and 78 not upgraded. Inst libisl15 (0.18-1 Debian:9.2/stable [amd64]) Inst libmpfr4 (3.1.5-1 Debian:9.2/stable [amd64]) Inst libmpc3 (1.0.3-1+b2 Debian:9.2/stable [amd64]) Inst cpp-6 (6.3.0-18 Debian:9.2/stable [amd64]) Inst cpp (4:6.3.0-4 Debian:9.2/stable [amd64]) Inst libcc1-0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst binutils (2.28-5 Debian:9.2/stable [amd64]) Inst libgomp1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libitm1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libatomic1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libasan3 (6.3.0-18 Debian:9.2/stable [amd64]) Inst liblsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libtsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libubsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libcilkrts5 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libmpx2 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libquadmath0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libgcc-6-dev (6.3.0-18 Debian:9.2/stable [amd64]) Inst gcc-6 (6.3.0-18 Debian:9.2/stable [amd64]) Inst gcc (4:6.3.0-4 Debian:9.2/stable [amd64]) Inst make (4.1-9.1 Debian:9.2/stable [amd64]) Inst patch (2.7.5-1+b2 Debian:9.2/stable [amd64]) Inst dkms (2.3-2 Debian:9.2/stable [all]) Inst libc-dev-bin (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Inst linux-libc-dev (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libc6-dev (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Inst spl-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Conf libisl15 (0.18-1 Debian:9.2/stable [amd64]) Conf libmpfr4 (3.1.5-1 Debian:9.2/stable [amd64]) Conf libmpc3 (1.0.3-1+b2 Debian:9.2/stable [amd64]) Conf cpp-6 (6.3.0-18 Debian:9.2/stable [amd64]) Conf cpp (4:6.3.0-4 Debian:9.2/stable [amd64]) Conf libcc1-0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf binutils (2.28-5 Debian:9.2/stable [amd64]) Conf libgomp1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libitm1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libatomic1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libasan3 (6.3.0-18 Debian:9.2/stable [amd64]) Conf liblsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libtsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libubsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libcilkrts5 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libmpx2 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libquadmath0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libgcc-6-dev (6.3.0-18 Debian:9.2/stable [amd64]) Conf gcc-6 (6.3.0-18 Debian:9.2/stable [amd64]) Conf gcc (4:6.3.0-4 Debian:9.2/stable [amd64]) Conf make (4.1-9.1 Debian:9.2/stable [amd64]) Conf patch (2.7.5-1+b2 Debian:9.2/stable [amd64]) Conf dkms (2.3-2 Debian:9.2/stable [all]) Conf libc-dev-bin (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Conf linux-libc-dev (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libc6-dev (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Conf spl-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Inst zfs-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Inst manpages [4.10-2] (4.13-3~bpo9+2 Debian Backports:stretch-backports [all]) Inst libfakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Inst fakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Inst libuutil1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libnvpair1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libzpool2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libzfs2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-compiler-gcc-6-x86 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-headers-4.13.0-0.bpo.1-common (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [all]) Inst linux-kbuild-4.13 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-headers-4.13.0-0.bpo.1-amd64 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-headers-amd64 (4.13+86~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst manpages-dev (4.13-3~bpo9+2 Debian Backports:stretch-backports [all]) Inst spl (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst zfsutils-linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst zfs-zed (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfs-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Conf manpages (4.13-3~bpo9+2 Debian Backports:stretch-backports [all]) Conf libfakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Conf fakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Conf libuutil1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libnvpair1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libzpool2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libzfs2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-compiler-gcc-6-x86 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-headers-4.13.0-0.bpo.1-common (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [all]) Conf linux-kbuild-4.13 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-headers-4.13.0-0.bpo.1-amd64 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-headers-amd64 (4.13+86~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf manpages-dev (4.13-3~bpo9+2 Debian Backports:stretch-backports [all]) Conf spl (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfsutils-linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfs-zed (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64])
This package will be upgraded from the same repository as apt will install the most recent version if it encounters two or more package versions that have the same priority.
Install package indirectly from backports repository
Assign the same priority as stable release to every package located in stretch-backports repository.
$ cat << EOF | sudo tee /etc/apt/preferences.d/89_stretch-backports_default Package: * Pin: release n=stretch-backports Pin-Priority: 500 EOF
Install package using the standard way, dependencies will be automatically satisfied.
$ sudo apt-get install zfs-dkms --dry-run Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: binutils cpp cpp-6 dkms fakeroot gcc gcc-6 libasan3 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libfakeroot libgcc-6-dev libgomp1 libisl15 libitm1 liblsan0 libmpc3 libmpfr4 libmpx2 libnvpair1linux libquadmath0 libtsan0 libubsan0 libuutil1linux libzfs2linux libzpool2linux linux-compiler-gcc-6-x86 linux-headers-4.13.0-0.bpo.1-amd64 linux-headers-4.13.0-0.bpo.1-common linux-headers-amd64 linux-kbuild-4.13 linux-libc-dev make manpages manpages-dev patch spl spl-dkms zfs-zed zfsutils-linux Suggested packages: binutils-doc cpp-doc gcc-6-locales python3-apport menu gcc-multilib autoconf automake libtool flex bison gdb gcc-doc gcc-6-multilib gcc-6-doc libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan3-dbg liblsan0-dbg libtsan0-dbg libubsan0-dbg libcilkrts5-dbg libmpx2-dbg libquadmath0-dbg glibc-doc make-doc ed diffutils-doc nfs-kernel-server samba-common-bin zfs-initramfs | zfs-dracut The following NEW packages will be installed: binutils cpp cpp-6 dkms fakeroot gcc gcc-6 libasan3 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libfakeroot libgcc-6-dev libgomp1 libisl15 libitm1 liblsan0 libmpc3 libmpfr4 libmpx2 libnvpair1linux libquadmath0 libtsan0 libubsan0 libuutil1linux libzfs2linux libzpool2linux linux-compiler-gcc-6-x86 linux-headers-4.13.0-0.bpo.1-amd64 linux-headers-4.13.0-0.bpo.1-common linux-headers-amd64 linux-kbuild-4.13 linux-libc-dev make manpages-dev patch spl spl-dkms zfs-dkms zfs-zed zfsutils-linux The following packages will be upgraded: manpages 1 upgraded, 43 newly installed, 0 to remove and 78 not upgraded. Inst libisl15 (0.18-1 Debian:9.2/stable [amd64]) Inst libmpfr4 (3.1.5-1 Debian:9.2/stable [amd64]) Inst libmpc3 (1.0.3-1+b2 Debian:9.2/stable [amd64]) Inst cpp-6 (6.3.0-18 Debian:9.2/stable [amd64]) Inst cpp (4:6.3.0-4 Debian:9.2/stable [amd64]) Inst libcc1-0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst binutils (2.28-5 Debian:9.2/stable [amd64]) Inst libgomp1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libitm1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libatomic1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libasan3 (6.3.0-18 Debian:9.2/stable [amd64]) Inst liblsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libtsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libubsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libcilkrts5 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libmpx2 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libquadmath0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libgcc-6-dev (6.3.0-18 Debian:9.2/stable [amd64]) Inst gcc-6 (6.3.0-18 Debian:9.2/stable [amd64]) Inst gcc (4:6.3.0-4 Debian:9.2/stable [amd64]) Inst make (4.1-9.1 Debian:9.2/stable [amd64]) Inst patch (2.7.5-1+b2 Debian:9.2/stable [amd64]) Inst dkms (2.3-2 Debian:9.2/stable [all]) Inst libc-dev-bin (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Inst linux-libc-dev (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libc6-dev (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Inst spl-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Conf libisl15 (0.18-1 Debian:9.2/stable [amd64]) Conf libmpfr4 (3.1.5-1 Debian:9.2/stable [amd64]) Conf libmpc3 (1.0.3-1+b2 Debian:9.2/stable [amd64]) Conf cpp-6 (6.3.0-18 Debian:9.2/stable [amd64]) Conf cpp (4:6.3.0-4 Debian:9.2/stable [amd64]) Conf libcc1-0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf binutils (2.28-5 Debian:9.2/stable [amd64]) Conf libgomp1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libitm1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libatomic1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libasan3 (6.3.0-18 Debian:9.2/stable [amd64]) Conf liblsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libtsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libubsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libcilkrts5 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libmpx2 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libquadmath0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libgcc-6-dev (6.3.0-18 Debian:9.2/stable [amd64]) Conf gcc-6 (6.3.0-18 Debian:9.2/stable [amd64]) Conf gcc (4:6.3.0-4 Debian:9.2/stable [amd64]) Conf make (4.1-9.1 Debian:9.2/stable [amd64]) Conf patch (2.7.5-1+b2 Debian:9.2/stable [amd64]) Conf dkms (2.3-2 Debian:9.2/stable [all]) Conf libc-dev-bin (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Conf linux-libc-dev (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libc6-dev (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Conf spl-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Inst zfs-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Inst manpages [4.10-2] (4.13-3~bpo9+2 Debian Backports:stretch-backports [all]) Inst libfakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Inst fakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Inst libuutil1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libnvpair1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libzpool2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libzfs2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-compiler-gcc-6-x86 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-headers-4.13.0-0.bpo.1-common (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [all]) Inst linux-kbuild-4.13 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-headers-4.13.0-0.bpo.1-amd64 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-headers-amd64 (4.13+86~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst manpages-dev (4.13-3~bpo9+2 Debian Backports:stretch-backports [all]) Inst spl (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst zfsutils-linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst zfs-zed (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfs-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Conf manpages (4.13-3~bpo9+2 Debian Backports:stretch-backports [all]) Conf libfakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Conf fakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Conf libuutil1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libnvpair1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libzpool2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libzfs2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-compiler-gcc-6-x86 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-headers-4.13.0-0.bpo.1-common (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [all]) Conf linux-kbuild-4.13 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-headers-4.13.0-0.bpo.1-amd64 (4.13.13-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-headers-amd64 (4.13+86~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf manpages-dev (4.13-3~bpo9+2 Debian Backports:stretch-backports [all]) Conf spl (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfsutils-linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfs-zed (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64])
This solution is not suitable for production environment because every installed package will get updated.
Install particular package indirectly from backports repository
Assign the lowest priority to every package located in stretch-backports repository.
$ cat << EOF | sudo tee /etc/apt/preferences.d/89_stretch-backports_default Package: * Pin: release n=stretch-backports Pin-Priority: -1 EOF
Assign higher priority to the zfs-dkms package and its dependencies that are located in stretch-backports repository. You need to include dependencies here.
$ cat << EOF | sudo tee /etc/apt/preferences.d/90_stretch-backports_packages Package: zfs-dkms zfs-zed zfsutils-linux spl-dkms libnvpair1linux libuutil1linux libzfs2linux libzpool2linux spl Pin: release n=stretch-backports Pin-Priority: 1000 EOF
Mentioned earlier packages will be installed by default from stretch-backports repository due to their priority.
$ sudo apt-get install zfs-dkms --dry-run Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: binutils cpp cpp-6 dkms fakeroot gcc gcc-6 libasan3 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libfakeroot libgcc-6-dev libgomp1 libisl15 libitm1 liblsan0 libmpc3 libmpfr4 libmpx2 libnvpair1linux libquadmath0 libtsan0 libubsan0 libuutil1linux libzfs2linux libzpool2linux linux-compiler-gcc-6-x86 linux-headers-4.9.0-4-amd64 linux-headers-4.9.0-4-common linux-headers-amd64 linux-kbuild-4.9 linux-libc-dev make manpages-dev patch spl spl-dkms zfs-zed zfsutils-linux Suggested packages: binutils-doc cpp-doc gcc-6-locales python3-apport menu gcc-multilib autoconf automake libtool flex bison gdb gcc-doc gcc-6-multilib gcc-6-doc libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan3-dbg liblsan0-dbg libtsan0-dbg libubsan0-dbg libcilkrts5-dbg libmpx2-dbg libquadmath0-dbg glibc-doc make-doc ed diffutils-doc nfs-kernel-server samba-common-bin zfs-initramfs | zfs-dracut The following NEW packages will be installed: binutils cpp cpp-6 dkms fakeroot gcc gcc-6 libasan3 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libfakeroot libgcc-6-dev libgomp1 libisl15 libitm1 liblsan0 libmpc3 libmpfr4 libmpx2 libnvpair1linux libquadmath0 libtsan0 libubsan0 libuutil1linux libzfs2linux libzpool2linux linux-compiler-gcc-6-x86 linux-headers-4.9.0-4-amd64 linux-headers-4.9.0-4-common linux-headers-amd64 linux-kbuild-4.9 linux-libc-dev make manpages-dev patch spl spl-dkms zfs-dkms zfs-zed zfsutils-linux 0 upgraded, 43 newly installed, 0 to remove and 61 not upgraded. Inst libisl15 (0.18-1 Debian:9.2/stable [amd64]) Inst libmpfr4 (3.1.5-1 Debian:9.2/stable [amd64]) Inst libmpc3 (1.0.3-1+b2 Debian:9.2/stable [amd64]) Inst cpp-6 (6.3.0-18 Debian:9.2/stable [amd64]) Inst cpp (4:6.3.0-4 Debian:9.2/stable [amd64]) Inst libcc1-0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst binutils (2.28-5 Debian:9.2/stable [amd64]) Inst libgomp1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libitm1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libatomic1 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libasan3 (6.3.0-18 Debian:9.2/stable [amd64]) Inst liblsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libtsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libubsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libcilkrts5 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libmpx2 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libquadmath0 (6.3.0-18 Debian:9.2/stable [amd64]) Inst libgcc-6-dev (6.3.0-18 Debian:9.2/stable [amd64]) Inst gcc-6 (6.3.0-18 Debian:9.2/stable [amd64]) Inst gcc (4:6.3.0-4 Debian:9.2/stable [amd64]) Inst make (4.1-9.1 Debian:9.2/stable [amd64]) Inst patch (2.7.5-1+b2 Debian:9.2/stable [amd64]) Inst dkms (2.3-2 Debian:9.2/stable [all]) Inst libc-dev-bin (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Inst linux-libc-dev (4.9.51-1 Debian:9.2/stable [amd64]) Inst libc6-dev (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Inst spl-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Conf libisl15 (0.18-1 Debian:9.2/stable [amd64]) Conf libmpfr4 (3.1.5-1 Debian:9.2/stable [amd64]) Conf libmpc3 (1.0.3-1+b2 Debian:9.2/stable [amd64]) Conf cpp-6 (6.3.0-18 Debian:9.2/stable [amd64]) Conf cpp (4:6.3.0-4 Debian:9.2/stable [amd64]) Conf libcc1-0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf binutils (2.28-5 Debian:9.2/stable [amd64]) Conf libgomp1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libitm1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libatomic1 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libasan3 (6.3.0-18 Debian:9.2/stable [amd64]) Conf liblsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libtsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libubsan0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libcilkrts5 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libmpx2 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libquadmath0 (6.3.0-18 Debian:9.2/stable [amd64]) Conf libgcc-6-dev (6.3.0-18 Debian:9.2/stable [amd64]) Conf gcc-6 (6.3.0-18 Debian:9.2/stable [amd64]) Conf gcc (4:6.3.0-4 Debian:9.2/stable [amd64]) Conf make (4.1-9.1 Debian:9.2/stable [amd64]) Conf patch (2.7.5-1+b2 Debian:9.2/stable [amd64]) Conf dkms (2.3-2 Debian:9.2/stable [all]) Conf libc-dev-bin (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Conf linux-libc-dev (4.9.51-1 Debian:9.2/stable [amd64]) Conf libc6-dev (2.24-11+deb9u1 Debian:9.2/stable, Debian-Security:9/stable [amd64]) Conf spl-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Inst zfs-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Inst libfakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Inst fakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Inst libuutil1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libnvpair1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libzpool2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst libzfs2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst linux-compiler-gcc-6-x86 (4.9.51-1 Debian:9.2/stable [amd64]) Inst linux-headers-4.9.0-4-common (4.9.51-1 Debian:9.2/stable [all]) Inst linux-kbuild-4.9 (4.9.51-1 Debian:9.2/stable [amd64]) Inst linux-headers-4.9.0-4-amd64 (4.9.51-1 Debian:9.2/stable [amd64]) Inst linux-headers-amd64 (4.9+80+deb9u2 Debian:9.2/stable [amd64]) Inst manpages-dev (4.10-2 Debian:9.2/stable [all]) Inst spl (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst zfsutils-linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Inst zfs-zed (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfs-dkms (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [all]) Conf libfakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Conf fakeroot (1.21-3.1 Debian:9.2/stable [amd64]) Conf libuutil1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libnvpair1linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libzpool2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf libzfs2linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf linux-compiler-gcc-6-x86 (4.9.51-1 Debian:9.2/stable [amd64]) Conf linux-headers-4.9.0-4-common (4.9.51-1 Debian:9.2/stable [all]) Conf linux-kbuild-4.9 (4.9.51-1 Debian:9.2/stable [amd64]) Conf linux-headers-4.9.0-4-amd64 (4.9.51-1 Debian:9.2/stable [amd64]) Conf linux-headers-amd64 (4.9+80+deb9u2 Debian:9.2/stable [amd64]) Conf manpages-dev (4.10-2 Debian:9.2/stable [all]) Conf spl (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfsutils-linux (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64]) Conf zfs-zed (0.6.5.11-1~bpo9+1 Debian Backports:stretch-backports [amd64])
Additional notes
Priorities are extensively described in apt_preferences manual page.