nfs网络启动rootfs时出错，不知道是哪个问题

viso28 · 发表于 2022-10-21 15:35:45

ubuntu的设置主要是nfs设置：
通过showmount -e，显示出：/home/viso/mount/nfs * 说明nfs是启动了的

启动开关：
SD启动

uboot设置：
ethaddr=00:04:9f:04:d2:30
gatewayip=192.168.137.1
ipaddr=192.168.137.23serverip=192.168.137.100
bootargs=console=ttymxc0,115200 rw root=/dev/nfs nfsroot=192.168.137.100:/home/viso/mount/nfs/rootfs ip=192.168.137.23:192.168.137.100:192.168.137.1:255.255.255.0::eth0

ff
bootcmd=tftp 80800000 zImage;tftp 83000000 imx6ull-alientek-emmc.dtb;bootz 80800000 - 83000000;

zImage和.dtb是通过tftp加载，已经试过是可以正常加载的
可以ping通ubuntu的

出现的问题是无法通过nfs挂载rootfs。但不知道是哪个部分出的问题，如图所示
网络设置是根据（13.3的视频）修改的
自己编译的zImage和.dtb，和用“基础资料\08、系统镜像\02、教程系统镜像”里的zImage和.dtb的结果也是一样，
最后出现：Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)

snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock to 1970-01-01 03:24:46 UTC (12286)
mmc1: MAN_BKOPS_EN bit is not set
mmc1: new HS200 MMC card at address 0001
fec 20b4000.ethernet eth0: Freescale FEC PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=20b4000.ethernet:01, irq=-1)
mmcblk1: mmc1:0001 8GTF4R 7.28 GiB
mmcblk1boot0: mmc1:0001 8GTF4R partition 1 4.00 MiB
mmcblk1boot1: mmc1:0001 8GTF4R partition 2 4.00 MiB
mmcblk1rpmb: mmc1:0001 8GTF4R partition 3 512 KiB
mmcblk1: p1 p2
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
fec 20b4000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
IP-Config: Complete:
   device=eth0, hwaddr=00:04:9f:04:d2:30, ipaddr=192.168.137.23, mask=255.255.255.0, gw=192.168.137.1
   host=192.168.137.23, domain=, nis-domain=(none)
   bootserver=192.168.137.100, rootserver=192.168.137.100, rootpath=
gpio_dvfs: disabling
can-3v3: disabling
ALSA device list:
  No soundcards found.
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" or unknown-block(2,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
0100          65536 ram0  (driver?)

第一次遇到这种情况，各位兄弟，还有得救吗