vCenter Server VAMI backup configured using NFS Failing with error " Failed to create backup directory on backup server"
Article ID: 377789
Updated On:
Products
Issue/Introduction
vCenter Backup failing with below error on VAMI (vCenter server Appliance Management)
Failed to create backup directory on backup server.
In /var/log/vmware/applmgmt/backup.log errors similar to:
ERROR: Failed to create backup directory Plugin error occurred. ErrCode: 1, Args: ()
ERROR: Local storage io request failed. Err: Permission denied
Environment
- vCenter Server 7.x
Cause
The backup is failing on vCenter due to a permission issues on NFS server.
A packet capture during the backup will show an error in the Access reply packet similar to following:
<Packet summary> NFS 190 V3 ACCESS Reply (Call In 429), [Access Denied: MD XT], [Allowed: RD LU DL]
Network File System, ACCESS Reply, [Access Denied: MD XT], [Allowed: RD LU DL]
[Program Version: 3]
[V3 Procedure: ACCESS (4)]
Status: NFS3_OK (0)
obj_attributes Directory mode: 0777 uid: 1234 gid: 1234
attributes_follow: value follows (1)
attributes Directory mode: 0777 uid: 1234 gid: 1234
uid: 1234
gid: 1234
Access rights (of requested): 0x00000013
.... ...1 = 0x001 READ: allowed
.... ..1. = 0x002 LOOKUP: allowed
.... .0.. = 0x004 MODIFY: *Access Denied*
.... 0... = 0x008 EXTEND: *Access Denied*
...1 .... = 0x010 DELETE: allowed
Access denied is shown for the user preventing the User ID (UID 1234) from creating a new directory.
The packet capture for the MKDIR request also shows NFS3ERR_NOENT when trying to create the new directory.
<Packet Summary> NFS 190 V3 MKDIR Reply (Call In 432) Error: NFS3ERR_ACCES
The user ID 1234 in this example above does not have MODIFY or EXTEND permissions to create a new directory and the backup process fails.
Resolution
Windows NFS configuration:
If the NFS Backup share is configured on windows machine, check for the permission settings of NFS Folder:
1) Right Click on properties of NFS backup folder
2) Select Manage NFS Sharing
3) Select permissions
4) Check for the permission: if its Read Only , then change to Read-Write under Type of access
5) Retry the backup from vCenter server VAMI (vCenter server Appliance Management) Page at https://vCentername:5480
For other NFS share mounts, refer to the vendor specific documentation on creating user with appropriate permission rights.
Additional Information
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