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Oracle® ZFS Storage Appliance Administration Guide
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Document Information

Using This Documentation

Chapter 1 Oracle ZFS Storage Appliance Overview

Chapter 2 Status

Chapter 3 Initial Configuration

Chapter 4 Network Configuration

Chapter 5 Storage Configuration

Chapter 6 Storage Area Network Configuration

Chapter 7 User Configuration

Chapter 8 Setting ZFSSA Preferences

Chapter 9 Alert Configuration

Chapter 10 Cluster Configuration

Chapter 11 ZFSSA Services

Available Services

Data Services

Directory Services

Service Settings

Remote Access Services

Security Services

Minimum Needed Ports

Configuring Services Using the BUI

Viewing a Specific Service Screen

Viewing a Specific Service Screen

Enabling a Service

Disabling a Service

Defining Properties

Viewing Service Logs

Configuring Services Using the CLI

Selecting a Service

Viewing a Service's State

Enabling a Service

Disabling a Service

Setting Properties

Viewing Service Help

NFS

Properties

Kerberos Realms

Service Logs

NFS Analytics

NFS BUI and CLI Properties

Sharing a Filesystem over NFS

iSCSI Service

iSCSI Service Properties

iSCSI Service Authentication

iSCSI Service Authorization

iSCSI Service Targets and Initiators

iSCSI Troubleshooting

SMB Service

SMB Service Properties

SMB Share Properties

NFS/SMB Interoperability

SMB DFS Namespaces

SMB Microsoft Stand-alone DFS Namespace Management Tools Support Matrix

Example: Manipulating DFS Namespaces

SMB Autohome Service

Adding SMB Autohome Rules

SMB Local Groups

Adding a User to an SMB Local Group

SMB Local Accounts

SMB MMC Integration

SMB Event Viewer

SMB Share Management

SMB Users, Groups, and Connections

Listing SMB Services

Configuring SMB Using the BUI

Initial Configuration

Active Directory Configuration

Project and Share Configuration

SMB Data Service Configuration

FTP Service

FTP Properties

FTP General Settings

FTP Security Settings

FTP Logs

Configuring FTP Using the BUI

Allowing FTP Access to a share

HTTP Service

HTTP Properties

HTTP Authentication and Access Control

HTTP Logs

Configuring HTTP

Allowing HTTP access to a share

NDMP Service

NDMP Local vs. Remote Configurations

NDMP Backup Formats and Types

NDMP Back up with

NDMP Back up with

NDMP Incremental backups

NDMP Properties

NDMP Logs

Remote Replication

Shadow Migration

Shadow Migration Properties

SFTP Service

SFTP Properties

SFTP Port

SFTP Logs

Configuring SFTP

Allowing SFTP access to a share

Configuring SFTP Services for Remote Access

SRP Service

TFTP Service

TFTP Properties

Configuring TFTP

Allowing TFTP access to a share

Virus Scan Service

Virus Scan Properties

Virus Scan File Extensions

Scanning Engines

Virus Scan Logs

Configuring Virus Scan

Configuring virus scanning for a share

NIS Service

NIS Properties

NIS Logs

Configuring NIS

Adding an appliance administrator from NIS

LDAP Service

LDAP Properties

LDAP Custom Mappings

LDAP Logs

Configuring LDAP

Adding an appliance administrator

Active Directory

Active Directory Properties

Active Directory Join Domain

Active Directory Join Workgroup

Active Directory Domains and Workgroups

Active Directory LDAP Signing

Active Directory Windows Server 2012 Support

Active Directory Windows Server 2008 Support

Active Directory Windows Server 2008 Support Section A: Kerberos issue (KB951191)

Active Directory Windows Server 2008 Support Section B: NTLMv2 issue (KB957441)

Active Directory Windows Server 2008 Support Section C: Note on NTLMv2

Configuring Active Directory Using the BUI

Joining a Domain

Joining a Workgroup

Configuring Active Directory Using the CLI

Example - Configuring Active Directory Using the CLI

Identity Mapping Service

Identity Mapping Properties

Identity Mapping Rule-based Mapping

Identity Mapping Directory-based Mapping

Identity Mapping IDMU

Identity Mapping Rules

Deny Mappings

Mapping Rule Directional Symbols

Identity Mapping Mappings

Identity Mapping Logs

Identity Mapping Best Practices

Identity Mapping Concepts

Identity Mapping Case Sensitivity

Mapping Persistence

Identity Mapping Domain-Wide Rules

Ephemeral Mapping

Identity Mapping Examples

Configuring Identity Mapping

Configuring Identity Mapping

Viewing or Flushing Mappings

DNS Service

DNS Properties

Configuring DNS

DNS Logs

Active Directory and DNS

Non-DNS Resolution

DNS-Less Operation

Dynamic Routing Service

RIP and RIPng Dynamic Routing Protocols

Dynamic Routing Logs

IPMP Service

IPMP Properties

IPMP Logs

NTP Service

NTP Properties

NTP Validation

NTP Authentication

NTP BUI Clock

NTP Tips

Configuring NTP Using the BUI

BUI Clock Synchronization

Configuring NTP Using the CLI

Phone Home Service

Oracle Single Sign-On Account

Phone Home Properties

Phone Home Web Proxy

Registering the Appliance

Registering the Appliance Using the BUI

Registering the Appliance Using the CLI

Changing Account Information

Phone Home Status

Phone Home State

Phone Home Logs

REST

RESTful API

Service Tags

Service Tag Properties

SMTP Service

SMTP Properties

SMTP Logs

SNMP Service

SNMP Properties

SNMP MIBs

Sun FM MIB

Sun AK MIB

Confinguring SNMP

Configuring SNMP to Serve Appliance Status

Configuring SNMP to Send Traps

Syslog Service

Syslog Properties

Classic Syslog: RFC 3164

Updated Syslog: RFC 5424

SYSLOG Message Format

SYSLOG Alert Message Format

Receiver Configuration Examples

Configuring a Solaris Receiver

Configuring a Linux Receiver

System Identity

System Identity Properties

System Identity Logs

SSH Service

SSH Properties

SSH Logs

Configuring SSH

Disabling root SSH access

Chapter 12 Shares, Projects, and Schema

Chapter 13 Replication

Chapter 14 Shadow Migration

Chapter 15 CLI Scripting

Chapter 16 Maintenance Workflows

Chapter 17 Integration

Index

NDMP Incremental backups

The appliance supports level-based incremental backups for all of the above backup types. To specify a level backup, DMAs typically specify the following three environment variables:

Variable
Details
LEVEL
Integer from 0 to 9 identifying the backup level.
DMP_NAME
Specifies a particular incremental backup set. Multiple sets of level incremental backups can be used concurrently by specifying different values for DMP_NAME.
UPDATE
Indicates whether this backup can be used as the base for subsequent incremental backups

By definition, a level-N backup includes all files changed since the previous backup of the same backup set (specified by "DMP_NAME") of the same share using LEVEL less than N. Level-0 backups always include all files. If UPDATE has value "y" (the default), then the current backup is recorded so that future backups of level greater than N will use this backup as a base. These variables are typically managed by the DMA and need not be configured directly by administrators.

Below is a sample incremental backup schedule:

Table 11-20  Sample Incremental Backup Schedule
Day
Details
First of month
Level-0 backup. Backup contains all files in the share.
Every 7th, 14th, 21st of month
Level-1 backup. Backup contains all files changed since the last full (monthly) backup
Every day
Level-2 backup. Backup contains all files changed since the last level-1 backup

To recover the filesystem's state as it was on the 24th of the month, an administrator typically restores the Level-0 backup from the 1st of the month to a new share, then restores the Level-1 backup from the 21st of the month, and then restores the Level-2 backup from the 24th of the month.

To implement level-based incremental backups the appliance must keep track of the level backup history for each share. For "tar" and "dump" backups, the level backup history is maintained in the share metadata. Incremental backups traverse the filesystem and include files modified since the time of the previous level backup. At restore time, the system simply restores all the files in the backup stream. In the above example, it would therefore be possible to restore the Level-2 backup from the 24th onto any filesystem and the files contained in that backup stream will be restored even though the target filesystem may not match the filesystem where the files were backed up. However, best practice suggests using a procedure like the above which starts from an empty tree restores the previous level backups in order to recover the original filesystem state.

To implement efficient level-based incremental backups for type "zfs", the system uses a different approach. Backups that are part of an incremental set do not destroy the snapshot used for the backup but rather leave it on the system. Subsequent incremental backups use this snapshot as a base to quickly identify the changed filesystem blocks and generate the backup stream. As a consequence, the snapshots left by the NDMP service after a backup must not be destroyed if you want to create subsequent incremental backups.

Another important consequence of this behavior is that in order to restore an incremental stream, the filesystem state must exactly match its state at the base snapshot of the incremental stream. In other words, in order to restore a level-2 backup, the filesystem must look exactly as it did when the previous level-1 backup completed. Note that the above commonly-used procedure guarantees this because when restoring the Level-2 backup stream from the 24th, the system is exactly as it was when the Level-1 backup from the 21st completed because that backup has just been restored.

The NDMP service will report an error if you attempt to restore an incremental "zfs" backup stream to a filesystem whose most recent snapshot doesn't match the base snapshot for the incremental stream, or if the filesystem has been changed since that snapshot. You can configure the NDMP service to rollback to the base snapshot just before the restore begins by specifying the NDMP environment variable "ZFS_FORCE" with value "y" or by configuring the "Rollback datasets" property of the NDMP service (see Properties below).