伺服器重新啟動後，NFS 掛載指令無限期地掛在客戶端上。
我正在運行這個命令：mount -t nfs -v 10.17.25.27:/DATA/projects/assets-db/log-apache test
我的 NFS 伺服器是 : 10.17.25.27，客戶端 IP 是10.17.25.152
我已啟用 nfs 的 syslog 調試，並且看到以下錯誤：
Aug 31 16:26:06 SEFRAPP05155 kernel: NFS call setclientid_confirm auth=UNIX, (client ID 9ee5cc5a6d8c0000)
Aug 31 16:26:06 SEFRAPP05155 kernel: NFS reply setclientid_confirm: -10008
Aug 31 16:26:06 SEFRAPP05155 kernel: NFS call setclientid auth=UNIX, 'Linux NFSv4.0 10.17.25.152/10.17.25.27 tcp'
Aug 31 16:26:06 SEFRAPP05155 kernel: NFS reply setclientid: 0
Aug 31 16:26:06 SEFRAPP05155 kernel: NFS call setclientid_confirm auth=UNIX, (client ID 9ee5cc5a6e8c0000)
Aug 31 16:26:06 SEFRAPP05155 kernel: NFS reply setclientid_confirm: -10008
Aug 31 16:26:06 SEFRAPP05155 kernel: --> nfs_put_client({8})
Aug 31 16:26:06 SEFRAPP05155 kernel: NFS: <-- nfs40_walk_client_list status = -10008
Aug 31 16:26:06 SEFRAPP05155 kernel: --> nfs4_create_server()
Aug 31 16:26:06 SEFRAPP05155 kernel: --> nfs4_init_server()
Aug 31 16:26:06 SEFRAPP05155 kernel: --> nfs4_set_client()
Aug 31 16:26:06 SEFRAPP05155 kernel: --> nfs_get_client(10.17.25.27,v4)
Aug 31 16:26:06 SEFRAPP05155 kernel: <-- nfs_found_client found nfs_client ffff8801e93a0400 for 10.17.25.27
Aug 31 16:26:06 SEFRAPP05155 kernel: <-- nfs4_set_client() = 0 [new ffff8801e93a0400]
Aug 31 16:26:06 SEFRAPP05155 kernel: <-- nfs4_init_server() = 0
Aug 31 16:26:06 SEFRAPP05155 kernel: --> nfs4_get_rootfh()
...
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS call setclientid_confirm auth=UNIX, (client ID 9ee5cc5a6f8c0000)
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS reply setclientid_confirm: -10008
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS call setclientid auth=UNIX, 'Linux NFSv4.0 10.17.25.152/10.17.25.27 tcp'
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS reply setclientid: 0
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS call setclientid_confirm auth=UNIX, (client ID 9ee5cc5a708c0000)
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS reply setclientid_confirm: -10008
Aug 31 16:26:08 SEFRAPP05155 kernel: --> nfs_put_client({9})
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS: <-- nfs40_walk_client_list status = -10008
Aug 31 16:26:08 SEFRAPP05155 kernel: nfs4_get_rootfh: getroot error = 512
Aug 31 16:26:08 SEFRAPP05155 kernel: <-- nfs4_get_rootfh() = -512
Aug 31 16:26:08 SEFRAPP05155 kernel: --> nfs_free_server()
Aug 31 16:26:08 SEFRAPP05155 kernel: --> nfs_put_client({8})
Aug 31 16:26:08 SEFRAPP05155 kernel: <-- nfs_free_server()
Aug 31 16:26:08 SEFRAPP05155 kernel: <-- nfs4_create_server() = error -512
...
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS call setclientid_confirm auth=UNIX, (client ID 9ee5cc5a6f8c0000)
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS reply setclientid_confirm: -10008
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS call setclientid auth=UNIX, 'Linux NFSv4.0 10.17.25.152/10.17.25.27 tcp'
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS reply setclientid: 0
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS call setclientid_confirm auth=UNIX, (client ID 9ee5cc5a708c0000)
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS reply setclientid_confirm: -10008
Aug 31 16:26:08 SEFRAPP05155 kernel: --> nfs_put_client({9})
Aug 31 16:26:08 SEFRAPP05155 kernel: NFS: <-- nfs40_walk_client_list status = -10008
Aug 31 16:26:08 SEFRAPP05155 kernel: nfs4_get_rootfh: getroot error = 512
Aug 31 16:26:08 SEFRAPP05155 kernel: <-- nfs4_get_rootfh() = -512
Aug 31 16:26:08 SEFRAPP05155 kernel: --> nfs_free_server()
Aug 31 16:26:08 SEFRAPP05155 kernel: --> nfs_put_client({8})
Aug 31 16:26:08 SEFRAPP05155 kernel: <-- nfs_free_server()
Aug 31 16:26:08 SEFRAPP05155 kernel: <-- nfs4_create_server() = error -512
Aug 31 16:26:09 SEFRAPP05155 kernel: NFS call setclientid_confirm auth=UNIX, (client ID 9ee5cc5a708c0000)
Aug 31 16:26:09 SEFRAPP05155 kernel: NFS reply setclientid_confirm: -10008
Aug 31 16:26:09 SEFRAPP05155 kernel: NFS call setclientid auth=UNIX, 'Linux NFSv4.0 10.17.25.152/10.17.25.27 tcp'
Aug 31 16:26:09 SEFRAPP05155 kernel: NFS reply setclientid: 0
Aug 31 16:26:09 SEFRAPP05155 kernel: NFS call setclientid_confirm auth=UNIX, (client ID 9ee5cc5a718c0000)
Aug 31 16:26:09 SEFRAPP05155 kernel: NFS reply setclientid_confirm: -10008
Aug 31 16:26:09 SEFRAPP05155 kernel: --> nfs_put_client({8})
Aug 31 16:26:09 SEFRAPP05155 kernel: NFS: <-- nfs40_walk_client_list status = -10008
我看到這些類型的日誌行重複出現。
當我rpcinfo -p 10.17.25.27在客戶端上運行時，我看到：
program vers proto port service
100000 4 tcp 111 portmapper
100000 3 tcp 111 portmapper
100000 2 tcp 111 portmapper
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 662 status
100005 1 udp 892 mountd
100024 1 tcp 662 status
100005 1 tcp 892 mountd
100005 2 udp 892 mountd
100005 2 tcp 892 mountd
100005 3 udp 892 mountd
100005 3 tcp 892 mountd
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100227 3 tcp 2049 nfs_acl
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100227 3 udp 2049 nfs_acl
100021 1 udp 32768 nlockmgr
100021 3 udp 32768 nlockmgr
100021 4 udp 32768 nlockmgr
100021 1 tcp 32768 nlockmgr
100021 3 tcp 32768 nlockmgr
100021 4 tcp 32768 nlockmgr
請注意，使用 NFS 版本 3 進行安裝是可行的，但我需要版本 4 的功能，因此我無法降級到該協定的舊版本。
我正在CentOS 7.2使用內核3.10.0-514.26.2.el7.x86_64
答案1
我們沒有找到為什麼我們的 NFS 突然宕機並且重新啟動後，客戶端無法掛載任何匯出的檔案系統。我們嘗試重新啟動所有伺服器，打開機器之間的所有端口，但沒有任何效果。
然而，在我們將核心從版本升級3.10.0-514.26.2.el7.x86_64到3.10.0-862.11.6.el7.x86_64