我有 5 个来自 NFS 服务器的 NFS 导出。从 NFS 客户端，我可以连接到所有客户端，除了我一直收到“过时文件句柄”的客户端。我能看到的唯一区别是 NFS 导出位于 NFS 服务器上的不同硬盘上。您知道为什么除了一个导出（/Backups/Plesk-Backups/ 导出）之外的所有导出都有效吗？
NFS 服务器：
[root@nfs-server ~]# cat /etc/exports
/Backups/Plesk-Backups/ 10.10.10.0/24(rw,sync,no_root_squash,no_subtree_check)
/home/XenServer_Virtual_Disk_Storage/ 10.10.10.0/24(rw,sync,no_root_squash,no_subtree_check)
/home/XenServer_ISO_Storage/ 10.10.10.0/24(rw,sync,no_root_squash,no_subtree_check)
/home/XenServer_Virtual_Disk_Storage/ 10.10.3.0/24(rw,sync,no_root_squash,no_subtree_check)
/home/XenServer_ISO_Storage/ 10.10.3.0/24(rw,sync,no_root_squash,no_subtree_check)
[root@nfs-server ~]# exportfs -ra
[root@nfs-server ~]# exportfs
/Backups/Plesk-Backups
10.10.10.0/24
/home/XenServer_Virtual_Disk_Storage
10.10.10.0/24
/home/XenServer_Virtual_Disk_Storage
10.10.3.0/24
/home/XenServer_ISO_Storage
10.10.10.0/24
/home/XenServer_ISO_Storage
10.10.3.0/24
[root@nfs-server ~]# df -kh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos00-root 50G 5.1G 45G 11% /
devtmpfs 1.2G 0 1.2G 0% /dev
tmpfs 1.2G 0 1.2G 0% /dev/shm
tmpfs 1.2G 8.6M 1.2G 1% /run
tmpfs 1.2G 0 1.2G 0% /sys/fs/cgroup
/dev/sda2 1014M 287M 728M 29% /boot
/dev/mapper/centos00-home 2.7T 2.1T 673G 76% /home
tmpfs 237M 0 237M 0% /run/user/0
/dev/sdb1 7.3T 1007G 6.3T 14% /Backups
[root@nfs-server ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 3000.6 GB, 3000592982016 bytes, 5860533168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 1B3D1287-AE98-4E6D-BB25-4F5571A867DF
# Start End Size Type Name
1 2048 4095 1M BIOS boot
2 4096 2101247 1G Microsoft basic
3 2101248 5860532223 2.7T Linux LVM
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdb: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 7E3F31FB-5356-45F2-9742-73F5BF3F31B2
# Start End Size Type Name
1 2048 15628052479 7.3T Linux filesyste primary
Disk /dev/mapper/centos00-root: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos00-swap: 2684 MB, 2684354560 bytes, 5242880 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos00-home: 2943.1 GB, 2943138922496 bytes, 5748318208 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
NFS 客户端：
[root@nfs-client ~]# mkdir /Plesk-Backups
[root@nfs-client ~]# mount -t nfs 10.10.10.54:/Backups/Plesk-Backups /Plesk-Backups/ -vvv
mount.nfs: timeout set for Mon Jan 14 10:28:01 2019
mount.nfs: trying text-based options 'vers=4.1,addr=10.10.10.54,clientaddr=10.10.10.68'
[root@nfs-client ~]# ls -al /Plesk-Backups
ls: cannot access /Plesk-Backups: Stale file handle
[root@nfs-client ~]# lsof |grep /Plesk-Backups
lsof: WARNING: can't stat() nfs4 file system /Plesk-Backups
Output information may be incomplete.