nfs掛載實(shí)驗(yàn)疑問記錄

ID:3721 · 發(fā)表于 2015-1-5 15:21

gedit /etc/exports
/home/camel/Mini2440-NFS *(rw,sync,no_root_squash)
/camel/Mini2440-NFS：要共享的目錄
* ：允許所有的網(wǎng)段訪問
rw ：讀寫權(quán)限
sync：資料同步寫入內(nèi)在和硬盤
no_root_squash：nfs客戶端共享目錄使用者權(quán)限
/camel/Mini2440-NFS是我的NFS共享目錄
#sudo /etc/init.d/portmap restart
  顯示錯(cuò)誤：
root@camel-dynabook-SS-1700MY-106S-2:~# sudo /etc/init.d/portmap restart
sudo：/etc/init.d/portmap: command not found
這個(gè)錯(cuò)誤我一直未解，因?yàn)槲乙呀?jīng)執(zhí)行過portmap的安裝，應(yīng)該不影響下面的工作，就繼續(xù)了。
#sudo /etc/init.d/nfs-kernel-server restart
下面的
* Stopping NFS kernel daemon                                           [ OK ]
* Unexporting directories for NFS kernel daemon...                   [ OK ]
* Exporting directories for NFS kernel daemon...                            exportfs: /etc/exports [1]: Neither 'subtree_check' or 'no_subtree_check' specified for export "*:/home/camel/Mini2440-NFS".
  Assuming default behaviour ('no_subtree_check').
  NOTE: this default has changed since nfs-utils version 1.0.x

                                                                     [ OK ]
* Starting NFS kernel daemon                                           [ OK ]
root@camel-dynabook-SS-1700MY-106S-2:~# showmount -e
Export list for camel-dynabook-SS-1700MY-106S-2:
/home/camel/Mini2440-NFS *
root@camel-dynabook-SS-1700MY-106S-2:~# ifconfig
eth0    Link encap:以太網(wǎng)  硬件地址 00:1c:7e:91:c7:aa
      inet6 地址: fe80::21c:7eff:fe91:c7aa/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  躍點(diǎn)數(shù):1
      接收數(shù)據(jù)包:0 錯(cuò)誤:0 丟棄:0 過載:0 幀數(shù):0
      發(fā)送數(shù)據(jù)包:224 錯(cuò)誤:0 丟棄:0 過載:0 載波:0
      碰撞:0 發(fā)送隊(duì)列長度:1000
      接收字節(jié):0 (0.0 B)  發(fā)送字節(jié):44906 (44.9 KB)

lo       Link encap:本地環(huán)回
      inet 地址:127.0.0.1  掩碼:255.0.0.0
      inet6 地址: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:65536  躍點(diǎn)數(shù):1
      接收數(shù)據(jù)包:2054 錯(cuò)誤:0 丟棄:0 過載:0 幀數(shù):0
      發(fā)送數(shù)據(jù)包:2054 錯(cuò)誤:0 丟棄:0 過載:0 載波:0
      碰撞:0 發(fā)送隊(duì)列長度:0
      接收字節(jié):293895 (293.8 KB)  發(fā)送字節(jié):293895 (293.8 KB)

wlan0    Link encap:以太網(wǎng)  硬件地址 00:1b:9e:fb:6b:a7
      inet 地址:192.168.1.116  廣播:192.168.1.255  掩碼:255.255.255.0
      inet6 地址: fe80::21b:9eff:fefb:6ba7/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  躍點(diǎn)數(shù):1
      接收數(shù)據(jù)包:740936 錯(cuò)誤:0 丟棄:0 過載:0 幀數(shù):0
      發(fā)送數(shù)據(jù)包:442245 錯(cuò)誤:0 丟棄:0 過載:0 載波:0
      碰撞:0 發(fā)送隊(duì)列長度:1000
      接收字節(jié):1094026905 (1.0 GB)  發(fā)送字節(jié):36368663 (36.3 MB)

據(jù)上我的本機(jī)ip地址是192.168.1.116
root@camel-dynabook-SS-1700MY-106S-2:~# mount -t nfs -o nolock 192.168.1.116:/home/camel/Mini2440-NFS /mnt

綜上我的本機(jī)ip地址填寫有誤，陪對象聊天，今天到此，收獲頗豐。成功在window下連接手機(jī)進(jìn)行了安卓程序的調(diào)試，linux下沒有成功，還在研究。NFS發(fā)現(xiàn)錯(cuò)誤，如果正確操作后還是沒有成功，將會發(fā)表論壇求助。

mini2440寫入?yún)?shù)修正
console=ttySAC0
root=/dev/nfs
nfsroot=192.168.1.116:/home/camel/Mini2440-NFS
ip=192.168.1.70:192.168.1.111:192.168.1.111:255.255.255.0:sbc2440.arm9.net:eth0:off
其各參數(shù)的含義如下:
nfsroot 是自己開發(fā)主機(jī)的 IP 地址。
“ip=”后面:
第一項(xiàng)(192.168.1.70)是目標(biāo)板的臨時(shí) IP(注意不要和局域網(wǎng)內(nèi)其他 IP 沖突);
第二項(xiàng)(192.168.1.111)是開發(fā)主機(jī)的 IP;
第三項(xiàng)(192.168.1.111)是目標(biāo)板上網(wǎng)關(guān)(GW)的設(shè)置;
第四項(xiàng)(255.255.255.0)是子網(wǎng)掩碼;
第五項(xiàng)是開發(fā)主機(jī)的名字(一般無關(guān)緊要,可隨便填寫)
eth0 是網(wǎng)卡設(shè)備的名稱。

ID:3721 · 發(fā)表于 2015-1-5 15:23

1，portmap配置失敗原因答案

Ubuntu上默認(rèn)是沒有安裝NFS服務(wù)器的，首先要安裝NFS服務(wù)程序：
$ sudo apt-get installnfs-kernel-server
(安裝nfs-kernel-server時(shí)，apt會自動安裝nfs-common和 rpcbind（注意，選取這里是 rpcbind 而非portmap））這樣，宿主機(jī)就相當(dāng)于NFSServer。

（1）配置/etc/hosts.deny（禁止任何host（主機(jī)）能和你的NFS服務(wù)器進(jìn)行NFS連接)，加入：
### NFS DAEMONS
rpcbind:ALL
lockd:ALL
mountd:ALL
rquotad:ALL
statd:ALL

（2）配置/etc/hosts.allow
允許那些你想要的主機(jī)和你的NFS服務(wù)器建立連接。下列步驟將允許任何IP地址以192.168.0開頭的主機(jī)（連接到NFS服務(wù)器上），也可以指定特定的IP地址。加入：
### NFS DAEMONS

rpcbind: 192.168.0.
lockd: 192.168.0.
rquotad: 192.168.0.
mountd: 192.168.0.
statd: 192.168.0.

（3）配置/etc/exports

NFS掛載目錄及權(quán)限由/etc/exports文件定義
比如我要將將我的usr目錄中的/usr/local目錄讓192.168.0.*的IP共享,則在該文件末尾添加下列語句：
/usr/local192.168.0.*(rw,sync,no_root_squash)
或者： /usr/local192.168.197.0/24(rw,sync,no_root_squash)
192.168.0.* 網(wǎng)段內(nèi)的NFS客戶端能夠共享NFS服務(wù)器/usr/local目錄內(nèi)容.且有讀,寫權(quán)限,并且該用戶進(jìn)入/usr/local目錄后的身份為root，最好加上sync, 否則 $ sudo exportfs-r 時(shí)會給出警告,sync是NFS的默認(rèn)選項(xiàng).
(運(yùn)行$ showmount-e 查看NFSserver的exportlist.
若更改了/etc/exports, 運(yùn)行 $ sudo exportfs-r 更新
運(yùn)行 $ sudo/etc/init.d/nfs-kernel-server restart 重啟nfs服務(wù))

后續(xù)實(shí)驗(yàn)記錄：
root@camel-dynabook-SS-1700MY-106S-2:~# mount -t nfs -o nolock 192.168.1.116:/home/camel/Mini2440-NFS /mnt
root@camel-dynabook-SS-1700MY-106S-2:~# cd /mnt
root@camel-dynabook-SS-1700MY-106S-2:/mnt# ls
bin  etc lib    mnt  proc  sbin sys  usr  www
dev  home  linuxrc  opt  root  share  tmp  var

mini2440寫入?yún)?shù)：

console=ttySAC0
root=/dev/nfs
nfsroot=192.168.1.116:/home/camel/Mini2440-NFS
ip=192.168.1.70:192.168.1.111:192.168.1.111:255.255.255.0:sbc2440.arm9.net:eth0:off

nand啟動mini2440串口輸出：

IP-Config: Complete:
   device=eth0, addr=192.168.1.70, mask=255.255.255.0, gw=192.168.1.111,
   host=sbc2440, domain=, nis-domain=arm9.net,
   bootserver=192.168.1.111, rootserver=192.168.1.116, rootpath=
Looking up port of RPC 100003/2 on 192.168.1.116
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
rpcbind: server 192.168.1.116 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 192.168.1.116
rpcbind: server 192.168.1.116 not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
Root-NFS: Server returned error -5 while mounting /home/camel/Mini2440-NFS
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" or unknown-block(2,0)
Please append a correct "root=" boot option; here are the available partitions:
1f00          256 mtdblock0one_wire_status: 4
(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)
one_wire_status: 4
Backtrace:
[<c00341cc>] (dump_backtrace+0x0/0x10c) from [<c0329f3c>] (dump_stack+0x18/0x1c)
r7:c03dba08 r6:00008000 r5:c3923000 r4:c0481c90
[<c0329f24>] (dump_stack+0x0/0x1c) from [<c0329f8c>] (panic+0x4c/0x114)
one_wire_status: 4
[<c0329f40>] (panic+0x0/0x114) from [<c0008dbc>] (mount_block_root+0x174/0x228)
r3:c38583ec r2:00000000 r1:c3823f60 r0:c03db9a0
[<c0008c48>] (mount_block_root+0x0/0x228) from [<c0008f34>] (mount_root+0xc4/0xfc)
[<c0008e70>] (mount_root+0x0/0xfc) from [<c0009094>] (prepare_namespace+0x128/0x180)
r5:c002081d r4:c0481660
[<c0008f6c>] (prepare_namespace+0x0/0x180) from [<c00084b0>] (kernel_init+0xe0/0x114)
r5:c001f2e4 r4:c0481420
[<c00083d0>] (kernel_init+0x0/0x114) from [<c004bbbc>] (do_exit+0x0/0x620)
r5:00000000 r4:00000000
one_wire_status: 4

還有錯(cuò)誤，革命尚未成功，同志仍需努力。

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