今天在转码业务平台挂载中兴分布式存储时，，出现了挂载失败：
linux-82ke:~ # mount -t nfs 192.168.202.60:/mnt/zxdfs/CM_South23/root/cccloud_tenant_id10001155 /mnt/D989/60/mnt/wfs10 -vmount.nfs: timeout set for Wed Jul 30 15:39:52 2014mount.nfs: trying text-based options ‘vers=4,addr=192.168.202.60,clientaddr=192.168.199.4’mount.nfs: mount(2): No such file or directorymount.nfs: trying text-based options ‘addr=192.168.202.60’mount.nfs: prog 100003, trying vers=3, prot=6mount.nfs: trying 192.168.202.60 prog 100003 vers 3 prot TCP port 2049mount.nfs: prog 100005, trying vers=3, prot=17mount.nfs: trying 192.168.202.60 prog 100005 vers 3 prot UDP port 39325mount.nfs: mount(2): Connection timed outmount.nfs: trying text-based options ‘vers=4,addr=192.168.202.60,clientaddr=192.168.199.4’mount.nfs: mount(2): No such file or directorymount.nfs: trying text-based options ‘addr=192.168.202.60’mount.nfs: prog 100003, trying vers=3, prot=6mount.nfs: trying 192.168.202.60 prog 100003 vers 3 prot TCP port 2049mount.nfs: prog 100005, trying vers=3, prot=17mount.nfs: trying 192.168.202.60 prog 100005 vers 3 prot UDP port 32954mount.nfs: mount(2): Connection timed outmount.nfs: trying text-based options ‘vers=4,addr=192.168.202.60,clientaddr=192.168.199.4’mount.nfs: mount(2): No such file or directorymount.nfs: trying text-based options ‘addr=192.168.202.60’mount.nfs: prog 100003, trying vers=3, prot=6mount.nfs: trying 192.168.202.60 prog 100003 vers 3 prot TCP port 2049mount.nfs: prog 100005, trying vers=3, prot=17mount.nfs: trying 192.168.202.60 prog 100005 vers 3 prot UDP port 37809mount.nfs: mount(2): Connection timed outmount.nfs: Connection timed out
中兴分布式存储那边的/etc/exports配置为：/data 192.168.199.*(rw,no_root_squash,sync,no_subtree_check)但是奇怪的是，如果将/etc/exports修改为：/data/test 192.168.199.4(rw,no_root_squash,sync,no_subtree_check)挂载又是成功的。最后无意间使用了如下配置后，居然正常了：/data 192.168.199.0/24(rw,no_root_squash,sync,no_subtree_check)
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本文永久更新链接地址：
环境不会改变，解决之道在于改变自己。
