Package: initramfs-tools
Version: 0.130
Severity: normal
Dear Maintainer,
I encountered a strange problem mounting the rootfs with a freshly
debootstrapped system.
Note: possible duplicate of #845302 but due to the details I found it probably
warrants its own topic.
Steps:
- used debootstrap with --variant=minbase to create an armhf rootfs
- added custom packages such as vendor kernel, systemd, initramfs-tools
- created extlinux.conf to boot
- bootargs: root=UUID=... rootfstype=auto rootwait
Observations:
- root=/dev/mmcblk0p1 rootfstype=auto: fails
- root=/dev/mmcblk0p1 rootfstype=ext4: works
- root=UUID=... rootfstype=ext4: works
How did I find this?
I added "set -x" to
- /usr/share/initramfs-tools/init
- /usr/share/initramfs-tools/scripts/init-bottom/udev
The serial console then finally revealed what is going wrong.
When it fails (rootfstype=auto):
+ [ auto != unknown ]
+ mount -r -t auto /dev/mmcblk0p1 /root
mount: No such device
When it works (rootfstype=ext4):
+ [ ext4 != unknown ]
+ mount -r -t ext4 /dev/mmcblk0p1 /root
[ 9.979060] EXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode.
Opts: (null)
So I see two solutions:
- If rootfstype=auto, and the actual type is known through a previous call to
blkid, e.g. while running fsck, use the known type
- fix the mount command to deal with type auto
I am submitting the full boot logs by email as follow-up.
Yours sincerely
Josua Mayer
-- Package-specific info:
-- initramfs sizes
-rw-r--r-- 1 root root 8.5M Sep 16 20:04 /boot/initrd.img-4.9.124-imx6-sr
-- /proc/cmdline
root=UUID=febfadf2-ffa2-48ad-9802-d7b67b5e7818 rootfstype=ext4 rootwait
-- /proc/filesystems
ext3
ext2
ext4
vfat
fuseblk
f2fs
-- lsmod
Module Size Used by
bnep 20480 2
mxc_v4l2_capture 40960 0
ipu_bg_overlay_sdc 16384 1 mxc_v4l2_capture
ipu_still 16384 1 mxc_v4l2_capture
ipu_prp_enc 16384 1 mxc_v4l2_capture
ipu_csi_enc 16384 1 mxc_v4l2_capture
ipu_fg_overlay_sdc 20480 1 mxc_v4l2_capture
hci_uart 49152 0
btbcm 16384 1 hci_uart
nvmem_core 24576 1 hci_uart
ov5647_camera_mipi 36864 0
v4l2_int_device 16384 3 ov5647_camera_mipi,ipu_csi_enc,mxc_v4l2_capture
xt_connmark 16384 2
iptable_nat 16384 0
nf_conntrack_ipv4 16384 3
nf_defrag_ipv4 16384 1 nf_conntrack_ipv4
nf_nat_ipv4 16384 1 iptable_nat
nf_nat 24576 1 nf_nat_ipv4
nf_conntrack 106496 4 nf_conntrack_ipv4,xt_connmark,nf_nat_ipv4,nf_nat
iptable_mangle 16384 1
iptable_filter 16384 0
ir_lirc_codec 16384 0
galcore 372736 0
ir_rc6_decoder 16384 0
lirc_dev 20480 1 ir_lirc_codec
rc_rc6_mce 16384 0
gpio_ir_recv 16384 0
bluetooth 360448 12 hci_uart,bnep,btbcm
rfkill 24576 4 bluetooth
ip_tables 24576 3 iptable_mangle,iptable_filter,iptable_nat
x_tables 28672 4
iptable_mangle,ip_tables,iptable_filter,xt_connmark
imx_sdma 28672 8
virt_dma 16384 1 imx_sdma
-- /etc/initramfs-tools/modules
-- /etc/initramfs-tools/initramfs.conf
MODULES=most
BUSYBOX=auto
KEYMAP=n
COMPRESS=gzip
DEVICE=
NFSROOT=auto
-- /etc/initramfs-tools/update-initramfs.conf
update_initramfs=yes
backup_initramfs=no
-- /proc/mdstat
Personalities :
unused devices: <none>
-- mkinitramfs hooks
/etc/initramfs-tools/hooks/:
imx-sdma
/usr/share/initramfs-tools/hooks:
dmsetup
fsck
fuse
keymap
klibc-utils
kmod
ntfs_3g
resume
thermal
udev
-- System Information:
Debian Release: 9.5
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: armhf (armv7l)
Kernel: Linux 4.9.124-imx6-sr (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=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 initramfs-tools-core 0.130
ii linux-base 4.5
initramfs-tools recommends no packages.
Versions of packages initramfs-tools suggests:
pn bash-completion <none>
-- no debconf information
