RK3288 nfs挂载firefly img导出的rootfs如何解决呢？

从fireflyimg导出的rootfs，重新制作成img烧录进开发板，没问题，可正常登录，但是用nfs挂载启动这个rootfs出现好几个问题。看起来好像是没有写权限。有没有小伙伴成功挂载firefly
img的rootfs，请指教一下，以下是nfs系统启动的打印

　　［ 8.432458］ No soundcards found.

　　［ 8.449632］ VFS： Mounted root （nfs filesystem） on device 0:16.

　　［ 8.456334］ devtmpfs： mounted

　　［ 8.460005］ Freeing unused kernel memory： 1024K

　　［ 11.709698］ systemd［1］： System time before build time， advancing
clock.

　　［ 11.858200］ systemd［1］： Failed to insert module ‘autofs4’： No such file or
directory

　　［ 11.887742］ cgroup： cgroup2： unknown option “nsdelegate”

　　［ 11.945239］ systemd［1］： systemd 237 running in system mode. （+PAM +AUDIT
+SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS
+ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2
default-hierarchy=hybrid）

　　［ 11.968031］ systemd［1］： Detected architecture arm.

　　Welcome to Ubuntu 18.04.4 LTS！

　　［ 11.990230］ systemd［1］： Set hostname to 《firefly》。

　　［ 13.061493］ systemd［1］： File /lib/systemd/system/systemd-udevd.service:35
configures an IP firewall （IPAddressDeny=any）， but the local system does not
support BPF/cgroup based firewalling.

　　［ 13.079353］ systemd［1］： Proceeding WITHOUT firewalling in effect！ （This
warning is only shown for the first loaded unit using IP firewalling.）

　　［ 14.608896］ systemd［1］： /lib/systemd/system/serial-getty@.service:14：
Failed to add dependency on dev-ttyFIQ0， ignoring： Invalid argument

　　［ 14.799315］ systemd［1］： Reached target Swap.

　　［ OK ］ Reached target Swap.

　　［ 14.807458］ systemd［1］： Created slice User and Session Slice.

　　［ OK ］ Created slice User and Session Slice.

　　［ 14.815081］ systemd［1］： Reached target User and Group Name Lookups.

　　［ OK ］ Reached target User and Group Name Lookups.

　　［ 14.827286］ systemd［1］： Started Forward Password Requests to Wall
Directory Watch.

　　［ OK ］ Started Forward Password Requests to Wall Directory Watch.

　　［ 14.842088］ systemd［1］： Created slice System Slice.

　　［ OK ］ Created slice System Slice.

　　［ 14.853723］ systemd［1］： Listening on Journal Socket （/dev/log）。

　　［ OK ］ Listening on Journal Socket （/dev/log）。

　　［ 14.864120］ systemd［1］： Listening on udev Control Socket.

　　［ OK ］ Listening on udev Control Socket.

　　［ 14.873621］ systemd［1］： Listening on Syslog Socket.

　　［ OK ］ Listening on Syslog Socket.

　　［ 14.884586］ systemd［1］： Listening on /dev/initctl Compatibility Named
Pipe.

　　［ OK ］ Listening on /dev/initctl Compatibility Named Pipe.

　　［ 14.895179］ systemd［1］： Reached target Slices.

　　［ OK ］ Reached target Slices.

　　［ 14.905735］ systemd［1］： Listening on Journal Socket.

　　［ OK ］ Listening on Journal Socket.

　　［ 14.916173］ systemd［1］： Mounting Kernel Debug File System.。.

　　Mounting Kernel Debug File System.。.

　　［ 14.935593］ systemd［1］： Starting Create Static Device Nodes in /dev.。.

　　Starting Create Static Device Nodes in /dev.。.

　　［ 14.944100］ systemd［1］： Starting Remount Root and Kernel File
Systems.。.

　　Starting Remount Root and Kernel File Systems.。.

　　［ 14.963704］ systemd［1］： Starting Load Kernel Modules.。.

　　Starting Load Kernel Modules.。.

　　［ 14.974116］ systemd［1］： Starting Set the console keyboard layout.。.

　　Starting Set the console keyboard layout.。.

　　［ 15.064945］ systemd［1］： Starting Journal Service.。.

　　Starting Journal Service.。.

　　［ 15.070258］ systemd［1］： Listening on udev Kernel Socket.

　　［ OK ］ Listening on udev Kernel Socket.

　　［ 15.079534］ systemd［1］： Created slice system-serial\x2dgetty.slice.

　　［ OK ］ Created slice system-serial\x2dgetty.slice.

　　［ 15.090347］ systemd［1］： Reached target Remote File Systems.

　　［ OK ］ Reached target Remote File Systems.

　　［ 15.103457］ systemd［1］： Starting udev Coldplug all Devices.。.

　　Starting udev Coldplug all Devices.。.

　　［ 15.114014］ systemd［1］： Mounted Kernel Debug File System.

　　［ OK ］ Mounted Kernel Debug File System.

　　［ 15.123047］ systemd［1］： Started Remount Root and Kernel File Systems.

　　［ OK ］ Started Remount Root and Kernel File Systems.

　　［ 15.174173］ systemd［1］： Started Load Kernel Modules.

　　［ OK ］ Started Load Kernel Modules.

　　［ 15.182303］ systemd［1］： Mounting FUSE Control File System.。.

　　Mounting FUSE Control File System.。.

　　［ 15.191972］ systemd［1］： Starting Apply Kernel Variables.。.

　　Starting Apply Kernel Variables.。.

　　［ 15.202036］ systemd［1］： Mounting Kernel Configuration File System.。.

　　Mounting Kernel Configuration File System.。.

　　［ 15.225723］ systemd［1］： Starting Load/Save Random Seed.。.

　　Starting Load/Save Random Seed.。.

　　［ 15.232896］ systemd［1］： Mounted FUSE Control File System.

　　［ OK ］ Mounted FUSE Control File System.

　　［ 15.247350］ systemd［1］： Mounted Kernel Configuration File System.

　　［ OK ］ Mounted Kernel Configuration File System.

　　［ 15.261641］ systemd［1］： Started Create Static Device Nodes in /dev.

　　［ OK ］ Started Create Static Device Nodes in /dev.

　　［ 15.271217］ systemd［1］： Starting udev Kernel Device Manager.。.

　　Starting udev Kernel Device Manager.。.

　　［ 15.301291］ systemd［1］： Failed to start Load/Save Random Seed.

　　［FAILED］ Failed to start Load/Save Random Seed.

　　See ‘systemctl status systemd-random-seed.service’ for details.

　　［ OK ］ Started Apply Kernel Variables.

　　［ OK ］ Started Journal Service.

　　Starting Flush Journal to Persistent Storage.。.

　　［ OK ］ Started udev Coldplug all Devices.

　　［ OK ］ Started Flush Journal to Persistent Storage.

　　［ OK ］ Started Set the console keyboard layout.

　　［ OK ］ Reached target Local File Systems （Pre）。

　　［ OK ］ Reached target Local File Systems.

　　Starting Set console font and keymap.。.

　　Starting Tell Plymouth To Write Out Runtime Data.。.

　　Starting Create Volatile Files and Directories.。.

　　［ OK ］ Started Tell Plymouth To Write Out Runtime Data.

　　［ OK ］ Started Set console font and keymap.

　　［ OK ］ Started udev Kernel Device Manager.

　　［ OK ］ Started Dispatch Password Requests to Console Directory Watch.

　　［ OK ］ Reached target Local Encrypted Volumes.

　　［FAILED］ Failed to start Create Volatile Files and Directories.

　　See ‘systemctl status systemd-tmpfiles-setup.service’ for details.

　　［ OK ］ Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.

　　Starting Network Name Resolution.。.

　　Starting Network Time Synchronization.。.

　　Starting Update UTMP about System Boot/Shutdown.。.

　　［ OK ］ Created slice system-systemd\x2dbacklight.slice.

　　Starting Load/Save Screen Backlight…ightness of backlight:backlight.。.

　　［FAILED］ Failed to start Network Time Synchronization.

　　See ‘systemctl status systemd-timesyncd.service’ for details.

　　［FAILED］ Failed to start Load/Save Screen Ba…Brightness of
backlight:backlight.

　　See ‘systemctl status systemd-backlight…cklight:backlight.service’ for
details.

　　［ OK ］ Stopped Network Time Synchronization.

　　Starting Network Time Synchronization.。.

　　Starting Load/Save RF Kill Switch Status.。.

　　［FAILED］ Failed to start Network Time Synchronization.

　　See ‘systemctl status systemd-timesyncd.service’ for details.

　　［FAILED］ Failed to start Load/Save RF Kill Switch Status.

　　See ‘systemctl status systemd-rfkill.service’ for details.

　　Starting Load/Save RF Kill Switch Status.。.

　　［ OK ］ Stopped Network Time Synchronization.

　　Starting Network Time Synchronization.。.

　　［FAILED］ Failed to start Load/Save RF Kill Switch Status.

　　See ‘systemctl status systemd-rfkill.service’ for details.

　　［FAILED］ Failed to start Network Time Synchronization.

　　See ‘systemctl status systemd-timesyncd.service’ for details.

　　［ OK ］ Stopped Network Time Synchronization.

　　Starting Network Time Synchronization.。.

　　Starting Load/Save RF Kill Switch Status.。.

　　［FAILED］ Failed to start Network Time Synchronization.

　　See ‘systemctl status systemd-timesyncd.service’ for details.

　　［FAILED］ Failed to start Load/Save RF Kill Switch Status.

　　See ‘systemctl status systemd-rfkill.service’ for details.

　　Starting Load/Save RF Kill Switch Status.。.

　　［ OK ］ Stopped Network Time Synchronization.

　　Starting Network Time Synchronization.。.

　　［FAILED］ Failed to start Load/Save RF Kill Switch Status.

　　See ‘systemctl status systemd-rfkill.service’ for details.

　　［FAILED］ Failed to start Network Time Synchronization.

　　See ‘systemctl status systemd-timesyncd.service’ for details.

　　［ OK ］ Stopped Network Time Synchronization.

　　［FAILED］ Failed to start Network Time Synchronization.

　　See ‘systemctl status systemd-timesyncd.service’ for details.

　　Starting Load/Save RF Kill Switch Status.。.

　　［ OK ］ Reached target System Time Synchronized.

　　［FAILED］ Failed to start Load/Save RF Kill Switch Status.

　　See ‘systemctl status systemd-rfkill.service’ for details.

　　［FAILED］ Failed to start Load/Save RF Kill Switch Status.

　　See ‘systemctl status systemd-rfkill.service’ for details.

　　［FAILED］ Failed to start Update UTMP about System Boot/Shutdown.

　　See ‘systemctl status systemd-update-utmp.service’ for details.

　　［DEPEND］ Dependency failed for Update UTMP about System Runlevel
Changes.

　　［ OK ］ Reached target System Initialization.

　　［ OK ］ Listening on D-Bus System Message Bus Socket.

　　［ OK ］ Started Daily Cleanup of Temporary Directories.

　　［ OK ］ Started Discard unused blocks once a week.

　　［ OK ］ Listening on Avahi mDNS/DNS-SD Stack Activation Socket.

　　［ OK ］ Reached target Sockets.

　　［ OK ］ Started Daily apt download activities.

　　［ OK ］ Started Daily apt upgrade and clean activities.

　　［ OK ］ Reached target Timers.

　　［ OK ］ Reached target Paths.

　　［ OK ］ Reached target Basic System.

　　Starting System Logging Service.。.

　　Starting Login Service.。.

　　Starting Avahi mDNS/DNS-SD Stack.。.

　　Starting Accounts Service.。.

　　Starting rkisp 3A engine.。.

　　［ OK ］ Started Set the CPU Frequency Scaling governor.

　　［ OK ］ Started D-Bus System Message Bus.

　　Starting WPA supplicant.。.

　　Starting Modem Manager.。.

　　Starting Restore /etc/resolv.conf i…fore the ppp link was shut down.。.

　　［ OK ］ Started Regular background program processing daemon.

　　Starting LSB： automatic crash report generation.。.

　　Starting Dispatcher daemon for systemd-networkd.。.

　　Starting Adbd for linux.。.

　　Starting Disk Manager.。.

　　Starting Network Manager.。.

　　［ OK ］ Started Network Name Resolution.

　　［ OK ］ Started System Logging Service.

　　［ OK ］ Started Login Service.

　　［ OK ］ Started Avahi mDNS/DNS-SD Stack.

　　［ OK ］ Reached target Host and Network Name Lookups.

　　［ OK ］ Started WPA supplicant.

　　［ OK ］ Started Restore /etc/resolv.conf if…before the ppp link was shut
down.

　　［ 19.633587］ stmmac_hw_setup： DMA engine initialization failed

　　［ 19.639358］ stmmac_open： Hw setup failed

　　［ OK ］ Started rkisp 3A engine.

　　Starting Authorization Manager.。.

　　［ OK ］ Started LSB： automatic crash report generation.

　　［ OK ］ Started Authorization Manager.

　　［ OK ］ Started Accounts Service.

　　［ OK ］ Started Modem Manager.

　　Starting Hostname Service.。.

　　［ OK ］ Started Disk Manager.

　　［ OK ］ Started Hostname Service.

　　Starting Network Manager Script Dispatcher Service.。.

　　［ OK ］ Started Network Manager Script Dispatcher Service.

　　［ OK ］ Started Adbd for linux.

　　［ 22.090615］ stmmac_hw_setup： DMA engine initialization failed

　　［ 22.096381］ stmmac_open： Hw setup failed

　　［ OK ］ Started Dispatcher daemon for systemd-networkd.

　　［ 22.505848］ stmmac_hw_setup： DMA engine initialization failed

　　［ 22.511620］ stmmac_open： Hw setup failed

　　［ 22.649995］ stmmac_hw_setup： DMA engine initialization failed

　　［ 22.655745］ stmmac_open： Hw setup failed

　　［ OK ］ Started Network Manager.

　　［ OK ］ Reached target Network.

　　Starting Permit User Sessions.。.

　　Starting OpenBSD Secure Shell server.。.

　　Starting /etc/rc.local Compatibility.。.

　　［ OK ］ Started /etc/rc.local Compatibility.

　　［ OK ］ Started Permit User Sessions.

　　Starting Hold until boot process finishes up.。.

　　Starting Light Display Manager.。.

　　［ OK ］ Started Hold until boot process finishes up.

　　Starting Set console scheme.。.

　　［ OK ］ Started Serial Getty on ttyFIQ0.

　　［ 22.775197］ stmmac_hw_setup： DMA engine initialization failed

　　［ 22.786387］ stmmac_open： Hw setup failed

　　［ OK ］ Started Set console scheme.

　　［ OK ］ Created slice system-getty.slice.

　　［ 22.907022］ stmmac_hw_setup： DMA engine initialization failed

　　［ 22.916437］ stmmac_open： Hw setup failed

　　［ OK ］ Started Getty on tty1.

　　［ OK ］ Reached target Login Prompts.

　　［ OK ］ Started OpenBSD Secure Shell server.

　　［ OK ］ Reached target Multi-User System.

　　Ubuntu 18.04.4 LTS firefly ttyFIQ0

　　firefly login： root （automatic login）

　　Authentication failure