exportfs: No host name问题处理

linux版本为

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[root@red42 ~]# uname -a
Linux red42 2.6.9-22.ELsmp #1 SMP Mon Sep 19 18:32:14 EDT 2005 i686 i686 i386 GNU/Linux

该主机作为nfs的server端，执行exportfs -a时报错

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[root@red42 ~]# exportfs -a
exportfs: No host name given with /Tbackup/ora10g1 (rw,sync,wdelay,hide,nocrossmnt,secure,no_root_squash,no_all_squash,subtree_check,secure_locks,mapping=identity,anonuid=-2,anongid=-2), suggest *(rw,sync,wdelay,hide,nocrossmnt,secure,no_root_squash,no_all_squash,subtree_check,secure_locks,mapping=identity,anonuid=-2,anongid=-2) to avoid warning

查看/etc/hosts文件，正常

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[root@red42 ~]# more /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1             localhost
172.16.4.67     red41
172.16.4.68     red42

查看/etc/exports文件，正常

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[root@red42 ~]# more /etc/exports
/Tbackup/ora10g1 172.16.4.67(rw,async,no_root_squash)

尝试用以下命令，执行成功

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[root@red42 ~]# exportfs -ra

下面看一下各个参数的作用，尤其注意r参数

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OPTIONS
       -a     Export or unexport all directories.

       -o options,...
              Specify a list of export options in the same manner as in exports(5).

       -i     Ignore the /etc/exports file, so that only default options and options given on the command line are used.

       -r     Reexport  all  directories.  It  synchronizes  /var/lib/nfs/xtab  with  /etc/exports.   It   removes   entries   in
              /var/lib/nfs/xtab  which  are  deleted from /etc/exports, and remove any entries from the kernel export table which
              are no longer valid.

       -u     Unexport one or more directories.

       -f     In 鈥檔ew鈥?mode, flush everything out of the kernels export table. Any clients that are active will get  new  entries
              added by mountd when they make their next request.

       -v     Be verbose. When exporting or unexporting, show what鈥檚 going on. When displaying the current export list, also dis-
              play the list of export options.