- Notes, cautions, and warnings
- Preface
- Overview of NetWorker Snapshot Features
- Data Protection Policies
- Default data protection policies in NMC's NetWorker Administration window
- Strategies for storage array snapshot backups
- Overview of configuring a new data protection policy
- Creating a policy
- Create a workflow for a new policy in NetWorker Administration
- Protection groups for snapshot backups
- Actions supported in snapshot backups
- Supported actions in snapshot workflows
- Visual representation of snapshot workflows
- Software Configuration
- Backup group resource migration
- Roadmap for snapshot configurations
- Snapshot configuration prerequisites
- Configuring the user privileges
- Configuring snapshot backups with the client wizard
- Configuring snapshot backups manually
- Configuring the Application Information variables
- Configuring preprocessing and postprocessing scripts
- Configuring ProtectPoint on VMAX
- Overview
- ProtectPoint on VMAX3 prerequisites
- Enabling vDisk on a Data Domain system
- Provisioning protection devices on Data Domain systems
- Completing the VMAX system configuration
- Considerations for ProtectPoint device and NetWorker ProtectPoint enabled pools
- Configuring NetWorker ProtectPoint, RecoverPoint and VMAX devices and pool with the wizard
- VMAX3 SRDF/S support
- Configuring Data Domain NsrSnapSG device groups for intelligent pairing
- Configuring ProtectPoint on RecoverPoint with XtremIO
- Overview
- Basic backup workflow
- Basic restore workflow
- ProtectPoint for RecoverPoint on XtremIO prerequisites
- Enabling vdisk on the Data Domain
- Provisioning protection devices on Data Domain systems
- Configuring RecoverPoint and XtremIO storage
- Configuring NetWorker ProtectPoint, RecoverPoint and VMAX devices and pool with the wizard
- Configuration for restore to secondary VMAX with the wizard
- Considerations for ProtectPoint device and NetWorker ProtectPoint enabled pools
- Configuring Data Domain NsrSnapSG device groups for intelligent pairing
- Configuring snapshots on XtremIO arrays
- Configuring snapshots on PowerStore arrays
- Configuring snapshots on VMAX Storage Arrays
- Configuring snapshots on VNX Block Storage Arrays
- Configuring snapshots on RecoverPoint
- Configuring snapshots in a Cluster Environment
- Data Management and Recovery
- Snapshot lifecycle management
- Management and recovery of file system snapshot data
- Snapshot recovery support and limitations
- Restoring from a snapshot with the Recovery Wizard
- Restoring a snapshot by rollback
- Troubleshooting
- Snapshot backup on Unity fails
- NAS Isilon snapshot mount fails on Linux
- Backup on Windows fails with a Delayed Write Failed error
- Backup fails and hangs when NMC user has insufficient privileges
- Snapshots fail to mount for AIX managed file systems
- Snapshots fail for Linux Volume Manager on VNX with PowerPath
- Linux Logical Volume Manager snapshots fail with an error
- NetWorker to Media-Clone stops responding and the backup fails
- File-by-file or saveset restore fails
- Restore of raw devices fails on Linux with permission issue
- Command nsrsnap_recover -I runs but fails to restore a file
- Restore fails with disk signature error
- Directed restore files and folder permission issue
- Snapshot mount might fail because VMAX does not release the lock on Restore FTS LUN
- NSM with XtremIO leaves snapshots mounted
- Application Information Variables
- Command-Line Operations for Snapshot Management
- Migrating Legacy PowerSnap Configurations
NetWorker 19.7 Snapshot Management Integration Guide
File-by-file or saveset restore fails
A File-by-file or saveset restore fails when a wrong storage node or a XtremIO initiator name is used during a restore operation.
NOTE XtremIO always mounts the snapshot on the given initiator name irrespective of the storage node.
The first time the restore fails the following error message is displayed:
6211 1481325281 0 0 2 2580 2364 0 ledmb071.lss.emc.com nsrsnapagent NSR info 2 %s 1 0 29 Unable to mount the snapshot.
Subsequently, the following error displays in the storage node log:
"decrypted data cached: offset 3340 1479626199 0 0 0 4648 6084 1479626194 ledme040 nsrsnapagent NSR
info 2 %s 1 0 202 [msg #233 D:/views/nw/18.1/nsr/storage/ssm/emc_xio/xioCommunication.cpp 210
PSDBG 5] Command failed with the following error message: {"message": "vol_already_mapped_by_ig_tg", "error_code":
400}"
To fix this issue, manually unmount the snapshot from the host using the XtremIO management software or commands.
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