突然间，远程NFS文件夹在启动时不会自动挂载。

Question

我有一个无头服务器运行UbuntuServer14.04LTS与所有最新更新。它使用NFS共享许多文件夹。

5月/etc/导出文件的内容：

# add folders we want to share through NFS
/mnt/raiddisk/john       (rw)
/mnt/raiddisk/vm        (rw)
/mnt/raiddisk           (rw)
/mnt/raiddisk/filecopy  (rw)
/mnt/raiddisk/movies    (rw)
/mnt/raiddisk/jane     (rw)
/mnt/raiddisk/svn       (rw)
/home/vboxuser2         (rw)
/var/www/server.johndoe.home/public_html               (rw)
/home/john       (rw)

我的客户端计算机(2)正在运行Ubuntu 14.04LTS和所有最新更新。而且两者都突然无法在引导时挂载NFS共享文件夹。

以下是我的/etc/fstab文件的相关内容：

# mount the NFS folders from the server
192.168.1.20:/mnt/raiddisk/john                          /mnt/john                                        nfs     auto,defaults   0       0
192.168.1.20:/mnt/raiddisk/vm                           /mnt/vm                                         nfs     auto,defaults   0       0
192.168.1.20:/home/vboxuser2                            /mnt/vboxuser2                                  nfs     auto,defaults   0       0
192.168.1.20:/mnt/raiddisk                              /mnt/raiddisk                                   nfs     auto,defaults   0       0
192.168.1.20:/var/www/server.johndoe.home/public_html  /mnt/server-www                                 nfs     auto,defaults   0       0
192.168.1.20:/home/john                                  /mnt/johnhome                                    nfs     auto,defaults   0       0

直到几天前，这个装置还很正常。在我的客户端机器上，文件夹是在引导时挂载的。

但是，现在(从最近的更新开始)，当我启动机器时，文件夹没有被挂载。

只有在我手动运行终端中的折叠时，它们才会挂载：

sudo mount -a

以下是sudo挂载-a -v的输出：

mount.nfs: timeout set for Sun Aug 16 23:40:00 2015
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: timeout set for Sun Aug 16 23:40:00 2015
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: timeout set for Sun Aug 16 23:40:00 2015
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: timeout set for Sun Aug 16 23:40:00 2015
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: timeout set for Sun Aug 16 23:40:00 2015
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'
mount.nfs: mount(2): No such file or directory
mount.nfs: trying text-based options 'addr=192.168.1.20'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot UDP port 36461
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.1.20 prog 100005 vers 3 prot TCP port 42598
mount.nfs: portmap query failed: RPC: Remote system error - Connection timed out
mount.nfs: Connection timed out
mount.nfs: timeout set for Sun Aug 16 23:42:11 2015
mount.nfs: trying text-based options 'vers=4,addr=192.168.1.20,clientaddr=192.168.1.7'

在客户端机器上，当我搜索/var/log任何与NFS相关的行时，我有以下输出(我只选择了最近的条目)：

/var/log/syslog:Aug 16 13:23:34 ubuntu kernel: [   15.128595] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog:Aug 16 13:23:34 ubuntu rpc.idmapd[875]: main: open(/run/rpc_pipefs/nfs): No such file or directory
/var/log/syslog:Aug 16 21:44:48 ubuntu kernel: [30119.650872] nfs: server 192.168.1.20 not responding, timed out
/var/log/syslog:Aug 16 21:48:00 ubuntu kernel: [30312.356845] nfs: server 192.168.1.20 not responding, timed out
/var/log/syslog:Aug 16 22:55:50 ubuntu kernel: [   15.444005] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog.1:Aug 16 13:04:35 ubuntu kernel: [   15.876127] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog.2.gz:Aug 15 14:00:52 ubuntu kernel: [   17.467940] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog.3.gz:Aug 14 22:12:45 ubuntu kernel: [   14.015935] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog.3.gz:Aug 14 22:12:45 ubuntu rpc.idmapd[898]: main: open(/run/rpc_pipefs/nfs): No such file or directory
/var/log/syslog.4.gz:Aug 12 22:49:49 ubuntu kernel: [   12.920639] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog.4.gz:Aug 12 22:49:49 ubuntu rpc.idmapd[910]: main: open(/run/rpc_pipefs/nfs): No such file or directory
/var/log/syslog.5.gz:Aug 11 21:33:11 ubuntu kernel: [   14.363706] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog.6.gz:Aug 10 21:29:28 ubuntu kernel: [   12.760663] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog.6.gz:Aug 10 21:29:29 ubuntu rpc.idmapd[890]: main: open(/run/rpc_pipefs/nfs): No such file or directory
/var/log/syslog.7.gz:Aug  6 20:58:35 ubuntu kernel: [   15.475703] FS-Cache: Netfs 'nfs' registered for caching
/var/log/syslog.7.gz:Aug  7 07:37:22 ubuntu kernel: [   12.183087] FS-Cache: Netfs 'nfs' registered for caching
/var/log/udev:KERNEL[15.324744] add      /module/nfs (module)
/var/log/udev:DEVPATH=/module/nfs
/var/log/udev:UDEV  [15.325094] add      /module/nfs (module)
/var/log/udev:DEVPATH=/module/nfs

我不知道我需要检查什么来确定这个问题。我检查了用户权限和文件权限，没有什么改变。

我假设有一些NFS相关的更新，这在某种程度上导致了我的配置不兼容？

Answer 1

虽然我还是不知道为什么会突然发生这种事。我找到了解决办法。

由于在终端中运行mount -a会挂载NFS共享，因此建议我将该命令添加到/etc/rc.local，并让它在引导期间自动运行。

因此，编辑/etc/rc.local并在mount -a行之前添加exit 0。

现在，在启动客户端时，NFS共享将再次挂载，而无需手动执行任何操作。