尝试挂载 FlexCache 路径时出现 "mount.nfs ：连接超时 "
适用场景
- ONTAP 9
- NFSv3/ 挂载协议
- FlexCache 卷
问题描述
- 在 Linux 上， "mount.nfs ：连接超时 " 或等效的挂载错误（实际记录的错误取决于客户端平台。）
mount -t nfs -s -o ro,intr,retrans=10,timeo=600,nfsvers=3,hard,rsize=32768,wsize=32768,tcp,noacl,port=2049,nocto sgh-cdot01-corp01:/vol/Test_FC/dester/centos7/x8675/dester_2-pic /mnt -vvv
mount.nfs: timeout set for Wed Dec 14 16:34:06 2022
mount.nfs: trying text-based options 'intr,retrans=10,timeo=600,nfsvers=3,hard,rsize=32768,wsize=32768,tcp,noacl,port=2049,nocto,sloppy,addr=10.19.185.41'
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 10.10.131.xx prog 100005 vers 3 prot TCP port 635
mount.nfs: mount(2): Connection timed out
mount.nfs: trying text-based options 'intr,retrans=10,timeo=600,nfsvers=3,hard,rsize=32768,wsize=32768,tcp,noacl,port=2049,nocto,sloppy,addr=10.10.131.xx'
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 10.10.131.xx prog 100005 vers 3 prot TCP port 635
mount.nfs: mount(2): Connection timed out
mount.nfs: Connection timed out
- 尝试从 FlexCache 卷挂载特定路径时，挂载操作超时。
- 数据包跟踪显示
NULL挂载调用已回复，但MNT调用未回复—客户端对其请求执行 RPC 重新传输，但未收到响应（请参见以下 wic/Tshak 输出示例）。
23 0.001398 10.216.29.66 → 10.216.29.68 MOUNT V3 NULL Call
24 0.001579 10.216.29.68 → 10.216.29.66 MOUNT V3 NULL Reply (Call In 23)
25 0.001848 10.216.29.66 → 10.216.29.68 MOUNT V3 NULL Call
26 0.002001 10.216.29.68 → 10.216.29.66 MOUNT V3 NULL Reply (Call In 25)
27 0.002039 10.216.29.66 → 10.216.29.68 MOUNT V3 MNT Call /cache_vol1/qtree/link-to-dir1
29 5.016283 10.216.29.66 → 10.216.29.68 MOUNT [RPC retransmission of #27]V3 MNT Call /cache_vol1/qtree/link-to-dir1
31 15.032252 10.216.29.66 → 10.216.29.68 MOUNT [RPC retransmission of #27]V3 MNT Call /cache_vol1/qtree/link-to-dir1