Dell PowerVault NX3500 - Manual (Page 178)

Identify the relevant export and the options defined for it, while focusing on the
netgroup definition. Document the used netgroup in order to restore it after the issue
is solved and remove the netgroup limitation.
NFS Mount Path Does Not Exist
Description Client tries to mount a mount path that does not exists on a NAS container.
Cause This error usually occurs in one of the following scenarios:
• When accessing a system which is being restored from backup or remote
replication. The full directory structure is available only when the restore is
complete.
• When a client with an authorization to access a higher directory in the same path
deletes or alters a directory which is being mounted by another client.
• When multiple users are accessing the same data set, it is recommended to apply
a strict permission scheme to avoid this scenario.
Workaround
1. If the NAS system is being restored, communicate the current status to the client
and instruct the client to wait for the restore process to complete.
2. In the other case, there are three options:
– Restore the problematic path from a backup.
– Manually create the missing directories to enable the mount. Clients receive
errors when trying to access existing data in a deleted path.
– Remove the export and communicate this to the client.
3. List all available exports on the NAS and identify the problematic export. It must
have an indication that it is not accessible.
4. Delete the export or create the directory where the export points to.
NFS Owner Restricted Operation
Description NFS client is not permitted to perform the requested action to the specific file.
Cause NFS user attempted a chmod or chgrp operation while not being the owner of the
file.
Workaround This is a minor, user-level issue. Frequent events of this type may indicate a malicious
attempt to access restricted data.
NFS Write To Read-Only Export
Description NFS client tries to perform modifications on a read-only export.
Cause An NFS export can be defined as a read-only export. A client accessing a read-only
export cannot perform write operations or modify included files.
Workaround This event, by itself, does not require any administrative intervention.
NFS Write To Read-Only Volume
Description An NFS user tries to modify a file on a read-only volume.
Cause A NAS volume becomes read-only when it is set as the target in a replication relation.
Modifying a read-only volume is inhibited, until the replication relation is removed and
the volume returns to a simple, normal state.
Workaround Inform the user(s) of the state of the NAS volume.
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