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移植内核3.7.2到mini2440，挂载网络文件系统出错，求帮助！

2013-10-28 09:54:57 2942

0 dm9000 dm9000 eth0: link down IP-Config: Complete: device=eth0, addr=192.168.0.110, mask=255.255.255.0, gw=192.168.0.1 host=192.168.0.110, domain=, nis-domain=(none) bootserver=192.168.0.150, rootserver=192.168.0.150, rootpath= ALSA device list: No soundcards found. dm9000 dm9000 eth0: link up, 10Mbps, half-duplex, lpa 0x0021 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: 1f00 256 mtdblock0 (driver?) 1f01 128 mtdblock1 (driver?) 1f02 5120 mtdblock2 (driver?) 1f03 256640 mtdblock3 (driver?) 1f04 262144 mtdblock4 (driver?) Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0) [] (unwind_backtrace+0x0/0xf8) from [] (panic+0x80/0x1f0) [] (panic+0x80/0x1f0) from [] (mount_block_root+0x1a0/0x264) [] (mount_block_root+0x1a0/0x264) from [] (mount_root+0x80/0x100) [] (mount_root+0x80/0x100) from [] (prepare_namespace+0x10c/0x1cc) [] (prepare_namespace+0x10c/0x1cc) from [] (kernel_init+0x168/0x344) [] (kernel_init+0x168/0x344) from [] (ret_from_fork+0x14/0x24) 且yaffs成功启动能够ping，如下： [root@xiamin /]# ping 192.168.0.150 PING 192.168.0.150 (192.168.0.150): 56 data bytes 64 bytes from 192.168.0.150: seq=2 ttl=64 time=1.031 ms 64 bytes from 192.168.0.150: seq=3 ttl=64 time=0.945 ms 64 bytes from 192.168.0.150: seq=10 ttl=64 time=0.942 ms 64 bytes from 192.168.0.150: seq=13 ttl=64 time=0.939 ms 64 bytes from 192.168.0.150: seq=14 ttl=64 time=0.950 ms 64 bytes from 192.168.0.150: seq=17 ttl=64 time=1.094 ms 挂载nfs文件如下： [root@xiamin /]# mount -t nfs -o nolock 192.168.0.150:/home/student/root_qtopia /mnt/ mount: mounting 192.168.0.150:/home/student/root_qtopia on /mnt/ failed: Connection timed out 0
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