Solved: The mount request was denied by the NFS server

ITGuy1024 · ‎2022-10-26

Hey all. I'm having some trouble getting a new ONTAP datastore mounted in vmware.

I'm running into this error and have tried this KB. I don't see anything glaring that's wrong however this is my first NetApp appliance.

https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Systems/FlexPod_with_Infrastructure_Automation/VMware_vSphere%3A_The_mount_request_was_d...

FAS2750::> volume show -vserver svm0 -volume svm0_root -instance

                                   Vserver Name: svm0
                                    Volume Name: svm0_root
                                 Aggregate Name: FAS2750_01_SSD_1
  List of Aggregates for FlexGroup Constituents: FAS2750_01_SSD_1
                                Encryption Type: none
               List of Nodes Hosting the Volume: FAS2750-01
                                    Volume Size: 2TB
                             Volume Data Set ID: 1025
                      Volume Master Data Set ID: 2153755296
                                   Volume State: online
                                   Volume Style: flex
                          Extended Volume Style: flexvol
                        FlexCache Endpoint Type: none
                         Is Cluster-Mode Volume: true
                          Is Constituent Volume: false
                  Number of Constituent Volumes: -
                                  Export Policy: default
                                        User ID: 0
                                       Group ID: 0
                                 Security Style: unix
                               UNIX Permissions: ---rwxrwxrwx
                                  Junction Path: /
                           Junction Path Source: -
                                Junction Active: true
                         Junction Parent Volume: -
                                        Comment:
                                 Available Size: 1.90TB
                                Filesystem Size: 2TB
                        Total User-Visible Size: 1.90TB
                                      Used Size: 596KB
                                Used Percentage: 0%
           Volume Nearly Full Threshold Percent: 95%
                  Volume Full Threshold Percent: 98%
                               Maximum Autosize: 2.40TB
                               Minimum Autosize: 2TB
             Autosize Grow Threshold Percentage: 85%
           Autosize Shrink Threshold Percentage: 50%
                                  Autosize Mode: off
            Total Files (for user-visible data): 21251126
             Files Used (for user-visible data): 102
                      Space Guarantee in Effect: true
                            Space SLO in Effect: true
                                      Space SLO: none
                          Space Guarantee Style: volume
                             Fractional Reserve: 100%
                                    Volume Type: RW
              Snapshot Directory Access Enabled: true
             Space Reserved for Snapshot Copies: 5%
                          Snapshot Reserve Used: 0%
                                Snapshot Policy: none
                                  Creation Time: Mon Oct 24 18:06:06 2022
                                       Language: C.UTF-8
                                   Clone Volume: false
                                      Node name: FAS2750-01
                      Clone Parent Vserver Name: -
                        FlexClone Parent Volume: -
                                  NVFAIL Option: off
                          Volume's NVFAIL State: false
        Force NVFAIL on MetroCluster Switchover: off
                      Is File System Size Fixed: false
                     (DEPRECATED)-Extent Option: off
                  Reserved Space for Overwrites: 0B
              Primary Space Management Strategy: volume_grow
                       Read Reallocation Option: off
    Naming Scheme for Automatic Snapshot Copies: create_time
               Inconsistency in the File System: false
                   Is Volume Quiesced (On-Disk): false
                 Is Volume Quiesced (In-Memory): false
      Volume Contains Shared or Compressed Data: false
              Space Saved by Storage Efficiency: 0B
         Percentage Saved by Storage Efficiency: 0%
                   Space Saved by Deduplication: 0B
              Percentage Saved by Deduplication: 0%
                  Space Shared by Deduplication: 0B
                     Space Saved by Compression: 0B
          Percentage Space Saved by Compression: 0%
            Volume Size Used by Snapshot Copies: 716KB
                                     Block Type: 64-bit
                               Is Volume Moving: false
                 Flash Pool Caching Eligibility: read-write
  Flash Pool Write Caching Ineligibility Reason: -
                        Constituent Volume Role: -
                          QoS Policy Group Name: -
                 QoS Adaptive Policy Group Name: -
                            Caching Policy Name: -
                Is Volume Move in Cutover Phase: false
        Number of Snapshot Copies in the Volume: 5
VBN_BAD may be present in the active filesystem: false
                Is Volume on a hybrid aggregate: false
                       Total Physical Used Size: 1.28MB
                       Physical Used Percentage: 0%
                                 FlexGroup Name: -
                          Is Volume a FlexGroup: false
                                  SnapLock Type: non-snaplock
                          Vserver DR Protection: -
                   Enable or Disable Encryption: false
                            Is Volume Encrypted: false
                               Encryption State: none
                              Encryption Key ID:
                                    Application: -
                  Is Fenced for Protocol Access: false
                    Protocol Access Fence Owner: -
                                Is SIDL enabled: off
                          Over Provisioned Size: 0B
                Available Snapshot Reserve Size: 102.4GB
                              Logical Used Size: 596KB
                        Logical Used Percentage: 0%
                         Logical Available Size: -
         Logical Size Used by Active Filesystem: 596KB
             Logical Size Used by All Snapshots: 0B
                        Logical Space Reporting: false
                      Logical Space Enforcement: false
                          Volume Tiering Policy: none
            Performance Tier Inactive User Data: -
    Performance Tier Inactive User Data Percent: -
Tags to be Associated with Objects Stored on a FabricPool: -
Does the Object Tagging Scanner Need to Run on This Volume: -
             Is File System Analytics Supported: true
  Reason File System Analytics is not Supported: -
                    File System Analytics State: off
            File System Analytics Scan Progress: -
                                 Is SMBC Master: false
                       Is SMBC Failover Capable: false
                                 SMBC Consensus: -

Ontapforrum · ‎2022-10-26

As you mentioned, you are new to NetApp: Just to advise you that , NetApp does not recommend using svm_root volume for data storage purpose. It is created as a gateway to the rest of the file-system (i.e. single file system hierarchy). It is only supposed to contain the 'name-space' information and files/directories necessary for the functioning of the SVM. 2TB is too large for this, just 10GB is way more than enough. In my setup, SVM root is only set to 1GB).

By default, when an SVM is created, the root volume is configured with 755 permissions.

The user root (0) has effective permissions of 7, or Full Control.
The Group and Others permission levels are set to 5, which is Read & Execute.

You need to create a separate Data Volume, say 'data' and that would be automatically junctioned under the '/' i.e svm root vol.

You can verify junction-path after creating the data vol, using this command.
::> volume show -vserver svm state,junction-path,junction-active
svm0 data online /data true

You can then attach a export policy to the data volume. (Export policy= simply means which clients/machines can access the NFS data volume).

Basically:(Do not mount svm_root)

1) Create a separate 'data' volume
2) Create a custom export policy or use the default and adjust the access rights.
3) Mount it,

For example -
mount 10.150.x.x:/data /mnt

Refer to this kb: (As you are new to NetApp, this will be useful)
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/How_to_troubleshoot%3A_Unable_to_mount_a_volume_using_NFS_in_ONTAP_9

What are junction paths?
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/What_are_junction_paths%3F

View solution in original post

Ontapforrum · ‎2022-10-26