Package: initramfs-tools Version: 0.120 Followup-For: Bug #784234 Hi, I also still got this error, after purged and reinstalled btrfs-tools.
$ sudo update-initramfs -u update-initramfs: Generating /boot/initrd.img-3.16.0-4-amd64 cryptsetup: WARNING: failed to detect canonical device of /dev/sda3 cryptsetup: WARNING: failed to detect canonical device of /dev/sda2 Warning: /sbin/fsck.btrfs doesn't exist, can't install to initramfs, ignoring. -- Package-specific info: -- initramfs sizes -rw-r--r-- 1 root root 17M May 10 10:13 /boot/initrd.img-3.16.0-4-amd64 -- /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-3.16.0-4-amd64 root=UUID=5334a911-628f-463d-aba2-7920bcd5ae4e ro -- resume RESUME=/dev/sda2 -- /proc/filesystems btrfs fuseblk vfat -- /etc/initramfs-tools/modules -- /etc/kernel-img.conf # Kernel image management overrides # See kernel-img.conf(5) for details do_symlinks = yes do_bootloader = no do_initrd = yes link_in_boot = no -- /etc/initramfs-tools/initramfs.conf MODULES=most BUSYBOX=y KEYMAP=n COMPRESS=gzip DEVICE= NFSROOT=auto -- /etc/initramfs-tools/update-initramfs.conf update_initramfs=yes backup_initramfs=no -- /etc/crypttab # <target name> <source device> <key file> <options> sda4_crypt /dev/sda4 none luks -- mkinitramfs hooks /etc/initramfs-tools/hooks/: /usr/share/initramfs-tools/hooks: btrfs busybox cryptgnupg cryptkeyctl cryptopenct cryptopensc cryptpassdev cryptroot dmsetup fsck fuse intel_microcode keymap klibc kmod lvm2 ntfs_3g resume thermal udev zz-busybox -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable'), (2, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages initramfs-tools depends on: ii busybox 1:1.22.0-15 ii cpio 2.11+dfsg-4.1 ii klibc-utils 2.0.4-2 ii kmod 20-1 ii module-init-tools 20-1 ii udev 215-17 Versions of packages initramfs-tools recommends: ii busybox 1:1.22.0-15 Versions of packages initramfs-tools suggests: ii bash-completion 1:2.1-4.1 -- no debconf information -- Adam Lee http://adam8157.info -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org