Linux | nfs挂载根文件系统失败-230712
Linux | nfs挂载根文件系统失败-230712
[ 5.571613] DBUG_PORT must not use AFC!
[ 5.575352] VFS: Cannot open root device "nfs" or unknown-block(0,255)
[ 5.580499] Please append a correct "root=" boot option; here are the available partitions:
[ 5.588832] b300 3817472 mmcblk0 driver: mmcblk
[ 5.593988] b301 264759 mmcblk0p1
[ 5.598233] b302 264759 mmcblk0p2
[ 5.602479] b303 104412 mmcblk0p3
[ 5.606726] b304 3158463 mmcblk0p4
[ 5.610973] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,255)
[ 5.619396] Backtrace:
[ 5.621819] [<c0034fb8>] (dump_backtrace+0x0/0x110) from [<c0501498>] (dump_stack+0x18/0x1c)
[ 5.630361] r6:00008000 r5:dfecc000 r4:c06f5b6c r3:00000002
[ 5.635845] [<c0501480>] (dump_stack+0x0/0x1c) from [<c0501514>] (panic+0x78/0xf8)
[ 5.643408] [<c050149c>] (panic+0x0/0xf8) from [<c0008f6c>] (mount_block_root+0x25c/0x2ac)
[ 5.651630] r3:00000002 r2:00000001 r1:dfc37f60 r0:c06464fa
[ 5.657249] [<c0008d10>] (mount_block_root+0x0/0x2ac) from [<c0009010>] (mount_root+0x54/0x68)
[ 5.665850] [<c0008fbc>] (mount_root+0x0/0x68) from [<c0009188>] (prepare_namespace+0x164/0x1bc)
[ 5.674594] r5:c00290cd r4:c0731740
[ 5.678133] [<c0009024>] (prepare_namespace+0x0/0x1bc) from [<c00084fc>] (kernel_init+0x128/0x170)
[ 5.687075] r5:c00083d4 r4:c0731500
[ 5.690616] [<c00083d4>] (kernel_init+0x0/0x170) from [<c0058894>] (do_exit+0x0/0x5f0)
[ 5.698511] r4:00000000 r3:00000000
[ 5.702049] Rebooting in 5 seconds..
更多
https://so.csdn.net/so/search?q=%E6%A0%B9%E6%96%87%E4%BB%B6%E7%B3%BB%E7%BB%9F&t=blog&u=I_feige
重新编译了一个支持nfs的内核后：
Starting logging: OK
Starting mdev...
Initializing random number generator... done.
Starting network...
ip: RTNETLINK answers: File exists
udhcpc (v1.21.0) started
Sending discover...
[ 45.689568] nfs: server 192.168.1.9 not responding, still trying
[ 194.884853] eth0: link down
[ 196.529385] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
[ 234.252041] eth0: link down
[ 235.896580] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
[ 241.119230] INFO: task udhcpc:79 blocked for more than 120 seconds.
[ 241.124030] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 241.131833] udhcpc D c050a034 0 79 73 0x00000000
[ 241.138135] Backtrace:
[ 241.140576] [<c0509dc4>] (schedule+0x0/0x2e8) from [<c050a0f4>] (io_schedule+0x48/0x74)
[ 241.148564] [<c050a0ac>] (io_schedule+0x0/0x74) from [<c0094444>] (sync_page+0x40/0x48)
[ 241.156530] r6:c0bfdf48 r5:df421d6c r4:df421d64 r3:00000000
[ 241.162164] [<c0094404>] (sync_page+0x0/0x48) from [<c050a594>] (__wait_on_bit_lock+0x5c/0xa4)
[ 241.170746] [<c050a538>] (__wait_on_bit_lock+0x0/0xa4) from [<c00943dc>] (__lock_page+0x6c/0x7c)
[ 241.179618] [<c0094370>] (__lock_page+0x0/0x7c) from [<c00945a8>] (find_lock_page+0x60/0x8c)
[ 241.187895] r6:000000fa r5:df82a21c r4:c08649a0
[ 241.192476] [<c0094548>] (find_lock_page+0x0/0x8c) from [<c0094dc8>] (filemap_fault+0x248/0x440)
[ 241.201240] r6:000000fa r5:00000000 r4:df4009c0 r3:00000000
[ 241.206867] [<c0094b80>] (filemap_fault+0x0/0x440) from [<c00a7cc8>] (__do_fault+0x54/0x438)
[ 241.215290] [<c00a7c74>] (__do_fault+0x0/0x438) from [<c00a8a6c>] (handle_mm_fault+0x36c/0xc3c)
[ 241.223956] [<c00a8700>] (handle_mm_fault+0x0/0xc3c) from [<c003a9f8>] (do_page_fault+0x10c/0x1fc)
[ 241.232887] [<c003a8ec>] (do_page_fault+0x0/0x1fc) from [<c0033254>] (do_PrefetchAbort+0x3c/0xa0)
[ 241.241716] [<c0033218>] (do_PrefetchAbort+0x0/0xa0) from [<c0033f64>] (ret_from_exception+0x0/0x10)
[ 241.251889] Exception stack(0xdf421fb0 to 0xdf421ff8)
[ 241.255842] 1fa0: 0a01a8c0 000a59f0 000002e0 beb626bc
[ 241.264022] 1fc0: 0a01a8c0 0101a8c0 694fe995 694fe995 00000000 00000000 0a01a8c0 000a800b
[ 241.272161] 1fe0: 401250dc beb626b8 0002b5b4 401250dc 60000010 ffffffff
[ 241.278829] r7:694fe995 r6:694fe995 r5:0101a8c0 r4:ffffffff
[ 360.490313] eth0: link down
[ 361.283287] INFO: task udhcpc:79 blocked for more than 120 seconds.
[ 361.288085] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 361.295998] udhcpc D c050a034 0 79 73 0x00000000
[ 361.302194] Backtrace:
[ 361.304626] [<c0509dc4>] (schedule+0x0/0x2e8) from [<c050a0f4>] (io_schedule+0x48/0x74)
[ 361.312616] [<c050a0ac>] (io_schedule+0x0/0x74) from [<c0094444>] (sync_page+0x40/0x48)
[ 361.320581] r6:c0bfdf48 r5:df421d6c r4:df421d64 r3:00000000
[ 361.326218] [<c0094404>] (sync_page+0x0/0x48) from [<c050a594>] (__wait_on_bit_lock+0x5c/0xa4)
[ 361.334798] [<c050a538>] (__wait_on_bit_lock+0x0/0xa4) from [<c00943dc>] (__lock_page+0x6c/0x7c)
[ 361.343553] [<c0094370>] (__lock_page+0x0/0x7c) from [<c00945a8>] (find_lock_page+0x60/0x8c)
[ 361.351950] r6:000000fa r5:df82a21c r4:c08649a0
[ 361.356532] [<c0094548>] (find_lock_page+0x0/0x8c) from [<c0094dc8>] (filemap_fault+0x248/0x440)
[ 361.365299] r6:000000fa r5:00000000 r4:df4009c0 r3:00000000
[ 361.370920] [<c0094b80>] (filemap_fault+0x0/0x440) from [<c00a7cc8>] (__do_fault+0x54/0x438)
[ 361.379341] [<c00a7c74>] (__do_fault+0x0/0x438) from [<c00a8a6c>] (handle_mm_fault+0x36c/0xc3c)
[ 361.388011] [<c00a8700>] (handle_mm_fault+0x0/0xc3c) from [<c003a9f8>] (do_page_fault+0x10c/0x1fc)
[ 361.397053] [<c003a8ec>] (do_page_fault+0x0/0x1fc) from [<c0033254>] (do_PrefetchAbort+0x3c/0xa0)
[ 361.405774] [<c0033218>] (do_PrefetchAbort+0x0/0xa0) from [<c0033f64>] (ret_from_exception+0x0/0x10)
[ 361.414864] Exception stack(0xdf421fb0 to 0xdf421ff8)
[ 361.419887] 1fa0: 0a01a8c0 000a59f0 000002e0 beb626bc
[ 361.428048] 1fc0: 0a01a8c0 0101a8c0 694fe995 694fe995 00000000 00000000 0a01a8c0 000a800b
[ 361.436184] 1fe0: 401250dc beb626b8 0002b5b4 401250dc 60000010 ffffffff
[ 361.442761] r7:694fe995 r6:694fe995 r5:0101a8c0 r4:ffffffff
[ 362.150476] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
[ 392.544994] eth0: link down
[ 394.189533] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
[ 481.447343] INFO: task udhcpc:79 blocked for more than 120 seconds.
[ 481.452140] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 481.459942] udhcpc D c050a034 0 79 73 0x00000000
[ 481.466246] Backtrace:
[ 481.468680] [<c0509dc4>] (schedule+0x0/0x2e8) from [<c050a0f4>] (io_schedule+0x48/0x74)
[ 481.476674] [<c050a0ac>] (io_schedule+0x0/0x74) from [<c0094444>] (sync_page+0x40/0x48)
[ 481.484636] r6:c0bfdf48 r5:df421d6c r4:df421d64 r3:00000000
[ 481.490273] [<c0094404>] (sync_page+0x0/0x48) from [<c050a594>] (__wait_on_bit_lock+0x5c/0xa4)
[ 481.498857] [<c050a538>] (__wait_on_bit_lock+0x0/0xa4) from [<c00943dc>] (__lock_page+0x6c/0x7c)
[ 481.507606] [<c0094370>] (__lock_page+0x0/0x7c) from [<c00945a8>] (find_lock_page+0x60/0x8c)
[ 481.516128] r6:000000fa r5:df82a21c r4:c08649a0
[ 481.520588] [<c0094548>] (find_lock_page+0x0/0x8c) from [<c0094dc8>] (filemap_fault+0x248/0x440)
[ 481.529351] r6:000000fa r5:00000000 r4:df4009c0 r3:00000000
[ 481.534974] [<c0094b80>] (filemap_fault+0x0/0x440) from [<c00a7cc8>] (__do_fault+0x54/0x438)
[ 481.543400] [<c00a7c74>] (__do_fault+0x0/0x438) from [<c00a8a6c>] (handle_mm_fault+0x36c/0xc3c)
[ 481.552063] [<c00a8700>] (handle_mm_fault+0x0/0xc3c) from [<c003a9f8>] (do_page_fault+0x10c/0x1fc)
[ 481.560993] [<c003a8ec>] (do_page_fault+0x0/0x1fc) from [<c0033254>] (do_PrefetchAbort+0x3c/0xa0)
[ 481.569831] [<c0033218>] (do_PrefetchAbort+0x0/0xa0) from [<c0033f64>] (ret_from_exception+0x0/0x10)
[ 481.578924] Exception stack(0xdf421fb0 to 0xdf421ff8)
[ 481.583943] 1fa0: 0a01a8c0 000a59f0 000002e0 beb626bc
[ 481.592101] 1fc0: 0a01a8c0 0101a8c0 694fe995 694fe995 00000000 00000000 0a01a8c0 000a800b
[ 481.600244] 1fe0: 401250dc beb626b8 0002b5b4 401250dc 60000010 ffffffff
[ 481.606817] r7:694fe995 r6:694fe995 r5:0101a8c0 r4:ffffffff
- 你可以参考下这个问题的回答, 看看是否对你有帮助, 链接: https://ask.csdn.net/questions/7629284
- 这篇博客也不错, 你可以看下Linux驱动学习-开发板nfs挂载-20220404
- 除此之外, 这篇博客: 嵌入式linux开发，开机NFS文件系统启动，使用nfs挂载根文件系统中的 2、直接重新启动系统。 部分也许能够解决你的问题, 你可以仔细阅读以下内容或者直接跳转源博客中阅读:
首次系统会进行ip适配。
VFS: Mounted root (nfs filesystem) on device 0:11. devtmpfs: mounted Freeing unused kernel memory: 272K (c0560000 - c05a4000) nfs: server 198.168.1.18 not responding, still trying nfs: server 198.168.1.18 not responding, still trying nfs: server 198.168.1.18 OK nfs: server 198.168.1.18 OK BusyBox v1.22.1 (2016-02-03 14:11:04 CST) built-in shell (ash) Enter 'help' for a list of built-in commands. ~ #第二次启动系统。
VFS: Mounted root (nfs filesystem) on device 0:11. devtmpfs: mounted Freeing unused kernel memory: 272K (c0560000 - c05a4000) BusyBox v1.22.1 (2016-02-03 14:11:04 CST) built-in shell (ash) Enter 'help' for a list of built-in commands. ~ #
如果你已经解决了该问题, 非常希望你能够分享一下解决方案, 写成博客, 将相关链接放在评论区, 以帮助更多的人 ^-^
编译rootfs报错：
rm -f /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_fakeroot.fs
rm -f /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/target/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM
echo "chown -R 0:0 /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/target" >> /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_fakeroot.fs
cat system/device_table.txt > /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_device_table.txt
printf '\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n /bin/busybox f 4755 0 0 - - - - -\n/usr/share/udhcpc/default.script f 755 0 0 - - - - -\n \n \n \n \n \n \n \n /dev/console c 622 0 0 5 1 - - -\n' >> /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_device_table.txt
echo "/home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/host/usr/bin/makedevs -d /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_device_table.txt /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/target" >> /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_fakeroot.fs
echo " tar -c""f /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/images/rootfs.tar -C /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/target ." >> /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_fakeroot.fs
chmod a+x /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_fakeroot.fs
/home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/host/usr/bin/fakeroot -- /home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/_fakeroot.fs
fakeroot: preload library `libfakeroot.so' not found, aborting.
fs/tar/tar.mk:13: recipe for target '/home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/images/rootfs.tar' failed
make: *** [/home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/images/rootfs.tar] Error 1
重新编译报其他错误：
-c ../ncurses/./base/lib_initscr.c -o ../objects/lib_initscr.o
In file included from ../ncurses/curses.priv.h:283:0,
from ../ncurses/lib_gen.c:19:
_91844.c:835:15: error: expected ‘)’ before ‘int’
../include/curses.h:1594:56: note: in definition of macro ‘mouse_trafo’
#define mouse_trafo(y,x,to_screen) wmouse_trafo(stdscr,y,x,to_screen)
^
Makefile:785: recipe for target '../objects/lib_gen.o' failed
make[2]: *** [../objects/lib_gen.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/host-ncurses-5.9/ncurses'
Makefile:307: recipe for target '../lib/libncurses.a' failed
make[1]: *** [../lib/libncurses.a] Error 2
make[1]: Leaving directory '/home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/host-ncurses-5.9/progs'
package/pkg-generic.mk:114: recipe for target '/home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/host-ncurses-5.9/.stamp_built' failed
make: *** [/home/fly/project/x210bv3s/qt_x210v3s_160307/buildroot/output/build/host-ncurses-5.9/.stamp_built] Error 2
[ 6.103604] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
[ 7.111547] IP-Config: Complete:
[ 7.113117] device=eth0, addr=192.168.1.100, mask=255.255.255.0, gw=192.168.1.1,
[ 7.120832] host=192.168.1.100, domain=, nis-domain=(none),
[ 7.126823] bootserver=192.168.1.9, rootserver=192.168.1.9, rootpath=
[ 7.134047] DBUG_PORT must not use AFC!
[ 7.137800] Looking up port of RPC 100003/2 on 192.168.1.9
[ 7.228237] Looking up port of RPC 100005/1 on 192.168.1.9
[ 7.365995] Root-NFS: Server returned error -13 while mounting /opt/rootfs
[ 7.371435] VFS: Unable to mount root fs via NFS, trying floppy.
[ 7.377664] VFS: Cannot open root device "nfs" or unknown-block(2,0)
[ 7.383832] Please append a correct "root=" boot option; here are the available partitions:
[ 7.392051] b300 3817472 mmcblk0 driver: mmcblk
[ 7.397231] b301 264759 mmcblk0p1
[ 7.401455] b302 264759 mmcblk0p2
[ 7.405701] b303 104412 mmcblk0p3
[ 7.409947] b304 3158463 mmcblk0p4
[ 7.414194] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
[ 7.422444] Backtrace:
[ 7.424873] [<c0037fb8>] (dump_backtrace+0x0/0x110) from [<c0509828>] (dump_stack+0x18/0x1c)
[ 7.433275] r6:00008000 r5:dfecc000 r4:c0701b6c r3:00000002
[ 7.438894] [<c0509810>] (dump_stack+0x0/0x1c) from [<c05098a4>] (panic+0x78/0xf8)
[ 7.446454] [<c050982c>] (panic+0x0/0xf8) from [<c0008fa8>] (mount_block_root+0x1d8/0x218)
[ 7.454679] r3:00000002 r2:00000001 r1:dfc37f60 r0:c064f8aa
[ 7.460297] [<c0008dd0>] (mount_block_root+0x0/0x218) from [<c00090ac>] (mount_root+0xc4/0xf8)
[ 7.468895] [<c0008fe8>] (mount_root+0x0/0xf8) from [<c0009244>] (prepare_namespace+0x164/0x1bc)
[ 7.477642] r5:c002b331 r4:c073d900
[ 7.481181] [<c00090e0>] (prepare_namespace+0x0/0x1bc) from [<c00084fc>] (kernel_init+0x128/0x170)
[ 7.490121] r5:c00083d4 r4:c073d6c0
[ 7.493665] [<c00083d4>] (kernel_init+0x0/0x170) from [<c005b894>] (do_exit+0x0/0x5f0)
[ 7.501563] r4:00000000 r3:00000000
[ 7.505098] Rebooting in 5 seconds..
还没到nfs的挂载，内核已经挂了！要检查下内核的配置！