The hardware is i.mx6q sabresd board.
The rootfs I'm using is fsl-image-qt5-validation-imx-fb-imx6qdlsolo in L4.1.15_2.0.0-ga_images_MX6QDLSOLO, and I don't modify the rootfs.
The Linux version is imx_4.1.15_2.0.0_ga.
The rootfs is mounted through NFS.
When I boot the board, it hangs on Starting kernel log daemon... for a long time (about several minutes), and then it hands at umount: /mnt/.psplash: umount failed: No such file or directory. The print log is:
/etc/network/if-pre-up.d/nfsroot: line 12: /proc/mounts: No such file or directory
run-parts: /etc/network/if-pre-up.d/nfsroot: exit status 1
Starting system message bus: Failed to start message bus: Failed to bind socket "/var/run/dbus/system_bus_socket": No such file or directory
/etc/rc5.d/S05connman: line 15: /proc/mounts: No such file or directory
/etc/rc5.d/S10dropbear: line 32: /proc/mounts: No such file or directory
Starting Dropbear SSH server: dropbear.
Starting rpcbind daemon...done.
starting statd: done
Starting advanced power management daemon: No APM support in kernel
Starting atd: OK
exportfs: can't open /etc/exports for reading
grep: /proc/filesystems: No such file or directory
NFS daemon support not enabled in kernel
Starting system log daemon...0
Starting kernel log daemon...
* Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon [fail]
Starting Telephony daemon
Starting Linux NFC daemon
Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
Starting crond: OK
Running local boot scripts (/etc/rc.local)/etc/rc.local: line 15: /proc/sys/vm/min_free_kbytes: No such file or directory
umount: /mnt/.psplash: umount failed: No such file or directory