Veritas NetBackup™ Snapshot Client Administrator's Guide

Last Published:
Product(s): NetBackup (9.1)
  1. Introduction
    1.  
      Snapshot Client features at a glance
    2. Snapshot Client features
      1.  
        About snapshots
      2.  
        About snapshot methods
      3.  
        About snapshot providers
      4.  
        About off-host backup support
      5.  
        About Instant Recovery
      6.  
        About FlashBackup policies
      7.  
        About snapshot methods for disk arrays
      8.  
        About block level incremental backup
      9.  
        About Snapshot Client and NDMP
    3. About snapshot basics
      1.  
        About the copy-on-write snapshot type
      2.  
        About the mirror snapshot type
    4.  
      Benefits of copy-on-write versus mirror
    5.  
      About local backup of a snapshot
    6. Off-host backup overview
      1.  
        About file and volume mapping methods
    7. Off-host backup methods
      1. About alternate client backup
        1.  
          About data sharing between clients
        2.  
          Alternate client backup split mirror examples
        3.  
          Alternate client backup through data replication example (UNIX only)
      2.  
        FlashBackup and alternate client combination example
      3.  
        NetBackup media server data mover example (UNIX only)
      4.  
        About the NDMP data mover
    8. Snapshot Client requirements
      1.  
        Snapshot Client restrictions
    9.  
      Snapshot Client terminology
    10.  
      Snapshot Client assistance
    11.  
      About open file backups for Windows
  2. Installation
    1.  
      Installation prerequisites for Snapshot Client
    2.  
      Snapshot Client installation notes
    3.  
      About distributing Client Software in mixed-platform environments
    4.  
      About creating log directories
    5.  
      About the snapshot state file
  3. Policy configuration
    1.  
      Notes on Snapshot Client policies
    2.  
      Configuring a Snapshot Client policy
    3.  
      Backup Selections tab options when configuring a policy
    4.  
      Off-host backup configuration options
    5.  
      Automatic snapshot selection
    6. Selecting the snapshot method
      1.  
        Snapshot methods
      2. Configuration parameters for Snapshot Client
        1.  
          Cache device path parameter
        2.  
          Delay in seconds between disk group split retries parameter
        3.  
          IBC receive timeout parameter (seconds)
        4.  
          IBC send timeout parameter (seconds)
        5.  
          Keep snapshot after backup parameter
        6.  
          Maximum number of volumes to resynchronize concurrently parameter
        7.  
          Maximum Snapshots parameter (Instant Recovery only)
        8.  
          Number of times to retry disk group split parameter
        9.  
          Provider Type parameter
        10.  
          Resynchronize mirror in background parameter
        11.  
          Snapshot Attribute parameter
        12.  
          Sync I/O delay in milliseconds parameter (UNIX only)
        13.  
          Sync region size in MB parameter (UNIX only)
        14.  
          Wait for mirror sync completion parameter
        15.  
          Important note on VSS and disk arrays
        16.  
          Synchronize mirror before the backup parameter
      3.  
        Snapshot Resources
    7.  
      Configuring backup scripts
    8. About using alternate client backup
      1.  
        Alternate client backup requirements
    9. Configuring alternate client backup
      1.  
        Before running the alternate client backup
      2.  
        Example alternate client backup configurations
    10. Policy configuration tips
      1.  
        Maximum pathname length
      2.  
        Snapshot tips
      3.  
        Multiple data streams
      4. About incremental backup of mirror-based snapshots
        1.  
          Incremental backup options (Windows only)
        2.  
          Snapshot sequence and access time
    11. About disabling snapshots
      1.  
        Disabling Open File Backups on Windows
      2.  
        Disabling Snapshot Client snapshots
  4. NAS snapshot configuration
    1.  
      About NAS snapshot overview
    2. Dynamic data streaming for D-NAS workloads
      1.  
        Understanding the features
      2.  
        Dynamic streaming parameters
    3.  
      Prerequisites for D-NAS configuration
    4.  
      Configuring dynamic data streaming with backup host pool
    5.  
      Configuring a backup host pool
    6.  
      Discover plugin
    7.  
      Minimum supported backup host versions for different features
    8.  
      Limitations and considerations
    9. Setting up a NAS-Data-Protection policy
      1.  
        Restore for NAS-Data-Protection policy
    10.  
      Notes on NAS_Snapshot methods
    11.  
      Setting up a policy for NAS snapshots
    12.  
      NAS snapshot naming scheme
  5. FlashBackup configuration
    1.  
      About FlashBackup
    2. FlashBackup restrictions
      1.  
        Restores of Windows encrypted files and hard links
    3.  
      Configuring a FlashBackup policy
    4. Configuring FlashBackup policy for backward compatibility (UNIX only)
      1.  
        About the cache partition
      2.  
        Requirements for the cache partition
      3.  
        Directives for multiple data streams
  6. Instant Recovery configuration
    1.  
      About Instant Recovery capabilities
    2.  
      Instant Recovery requirements
    3.  
      Instant Recovery restrictions
    4.  
      Giving full server privileges to the media server
    5. About Instant Recovery
      1.  
        About snapshot and backup for Instant Recovery
      2.  
        About NetBackup catalog maintenance
      3. About snapshot management
        1.  
          About snapshot rotation
      4. Means of controlling snapshots
        1.  
          Snapshot Resources pane
        2.  
          Maximum Snapshots parameter
    6.  
      Configuring a policy for Instant Recovery
    7. About sizing the cache for Instant Recovery copy-on-write snapshots
      1.  
        Cache size during restore
      2.  
        Setting an adequate size for the snapshot cache
      3.  
        Large restores from an Instant Recovery snapshot
    8. About configuring VxVM
      1.  
        Creating a snapshot mirror
      2. About creating Instant Snapshots
        1.  
          Creating space-optimized snapshots
        2.  
          Creating full-sized snapshots
      3.  
        Using the VxVM 3.5 GUI to configure VxVM mirrors
    9.  
      Modifying the VxVM or FlashSnap resync options for point in time rollback
    10.  
      Instant Recovery for databases
    11. About storage lifecycle policies for snapshots
      1.  
        Configuring a storage lifecycle policy to manage snapshot-based backups for Instant Recovery
      2.  
        Storage lifecycle polices and Snapshot Client troubleshooting
  7. Configuration of software-based snapshot methods
    1. Software-based snapshot methods
      1.  
        About nbu_snap
      2. Cache device requirements
        1.  
          Determining a size for the cache partition
        2.  
          Entering the cache
      3. About VxFS_Checkpoint
        1.  
          VxFS multi-volume system
        2.  
          Storage Checkpoint disk usage
        3.  
          Checkpoint retention schedules
        4.  
          Block-Level restore
      4.  
        About VxFS_Snapshot
      5. About VxVM
        1.  
          Creating a snapshot mirror of the source
        2.  
          About VxVM instant snapshots
        3.  
          About NetBackup snapshot methods
        4.  
          Space-Optimized instant snapshots
      6. About FlashSnap
        1.  
          Testing volumes for FlashSnap
      7. About VVR
        1.  
          VVR volume replication configuration
        2.  
          VVR name registration
        3.  
          Primary and secondary disk group and volume names for VVR
        4.  
          Testing the replication setup with VVR
      8.  
        About NAS_Snapshot
      9. About VSS
        1.  
          Disk array reconfiguration steps
        2.  
          Configuration and testing of volumes with VSS
        3.  
          Notes and restrictions on VSS
  8. Support for Cluster Volume Manager Environments (CVM)
    1.  
      About support for CVM environments
    2.  
      Note on NetBackup and CVM
    3.  
      About enabling VxVM or FlashSnap snapshots in a CVM environment
    4.  
      About enabling the NetBackup client to execute VxVM commands on the CVM master node
  9. Configuration of snapshot methods for disk arrays
    1. About the new disk array snapshot methods
      1.  
        About array-specific methods vs array-independent methods
      2.  
        Advantages of the new array-specific methods
      3.  
        About types of disk array methods
      4.  
        Important disk array method notes and restrictions
      5.  
        Disk array methods at a glance
    2. Disk array configuration tasks
      1.  
        Configuration tasks for the array administrator
      2.  
        Configuration tasks for the NetBackup administrator
      3.  
        Disk array configuration tasks diagram
    3. OS-specific configuration tasks
      1.  
        About dynamic multi-pathing
      2. HBA configuration
        1.  
          HBA persistent target bindings
      3. About Solaris sd.conf file
        1.  
          Solaris sd.conf file (Hitachi arrays only)
      4.  
        Linux modprobe.conf file
      5.  
        Verifying NetBackup client access, zoning, and LUN masking
    4. About VSS configuration (Windows)
      1.  
        Note on NetBackup array credentials
      2. Initial configuration of certain arrays
        1.  
          Creating EMC disk groups for VSS differential snapshots that use EMC TimeFinder Snap
        2.  
          Verifying that VSS can make a snapshot
        3.  
          Testing the EMC TimeFinder Snap backup
    5. About EMC CLARiiON arrays
      1.  
        EMC CLARiiON software requirements for UNIX
      2.  
        Veritas support for VSS Snapshot and EMC CLARiiON
      3.  
        Diagram of installed software for EMC CLARiiON
      4.  
        Verifying connectivity from client to array
      5.  
        About resolving host names on the network
      6. Configuring NetBackup to access the CLARiiON array
        1.  
          About using a local scope CLARiiON administrator account
      7.  
        Adding clients to a CLARiiON storage group
      8.  
        Configuring for EMC_CLARiiON_SnapView_Clone
      9.  
        Creating a clone private LUN with the EMC Navisphere Web interface
      10.  
        Creating a clone group and select a LUN as source
      11.  
        Adding clone LUNs to the clone group
      12.  
        Obtaining the device identifier for each source and clone LUN
      13.  
        About configuration for EMC_CLARiiON_SnapView_Snapshot
      14.  
        Configuring a reserved LUN pool for the storage processors
      15. Configuring a NetBackup policy for a CLARiiON array method
        1.  
          Configuring a policy using EMC_CLARiiON_Snapview_Clone method
        2.  
          Configuring the EMC_CLARiiON_Snapview_Clone method
        3.  
          EMC_CLARiiON_Snapview_Snapshot method
      16.  
        Common CLARiiON array configuration problems
    6. About EMC Symmetrix arrays
      1.  
        EMC Symmetrix DMX software requirements
      2.  
        Clone emulation flag can cause snapshots to fail
      3.  
        EMC snapshot operation fails
      4.  
        Support for EMC Symmetrix with Volume Shadow Copy Service
      5.  
        Prerequisites for using EMC Symmetrix disk arrays
      6.  
        Configuring NetBackup clients to use EMC Symmetrix
      7.  
        About configuring NetBackup to access the Symmetrix array
      8. About configuration for EMC_TimeFinder_Mirror
        1.  
          Fully synchronizing STD/BCV mirror pairs
      9. About configuration for EMC_TimeFinder_Clone
        1.  
          Verifying that the clone is complete before doing a point in time rollback
      10.  
        About configuration for EMC_TimeFinder_Snap
      11.  
        Configuring a policy for EMC_TimeFinder methods
    7. About HP EVA arrays
      1.  
        Prerequisites for working with HP EVA arrays
      2.  
        HP EVA software requirements for UNIX
      3.  
        Diagram of installed software for HP EVA
      4.  
        Veritas support for VSS Snapshot and HP EVA
      5. Verifying connectivity from clients to array using SSSU 5.0
        1.  
          Troubleshooting the SSSU procedure
        2.  
          Policy validation failure for the SSSU command
      6.  
        Configuring NetBackup to access the EVA array
      7.  
        Configuring a NetBackup policy for an HP EVA array method
      8.  
        HP EVA restrictions
    8. About IBM DS6000 and DS8000 arrays
      1.  
        IBM DS6000 and DS8000 software requirements
      2.  
        Preconfiguration for IBM arrays
      3. Configuring NetBackup to access the IBM DS6000 or DS8000 array
        1.  
          Configuring array access for NetBackup hosts not named in a policy
      4.  
        Configuring the IBM array for NetBackup
      5.  
        Using DSCLI commands to obtain unique IBM identifiers
      6.  
        Configuring a NetBackup policy for IBM_DiskStorage_FlashCopy
      7.  
        For further reference on IBM arrays
    9. About IBM DS4000 array
      1.  
        Array preconfiguration tasks
      2.  
        IBM 4000 software requirements
      3.  
        Verifying NetBackup client access, zoning, and LUN masking
      4.  
        Configuring NetBackup to access the IBM DS4000 array
      5.  
        Configuring the IBM 4000 array for NetBackup
      6.  
        Configuring a NetBackup policy for IBM_StorageManager_FlashCopy
    10. About Hitachi SMS/WMS/AMS, USP/NSC, USP-V/VM
      1. Hitachi array software requirements
        1.  
          Determining the current RAID Manager version
      2.  
        Preconfiguration for Hitachi
      3.  
        About communication between NetBackup and the Hitachi array
      4.  
        Determining if the Hitachi command devices are visible
      5.  
        About configuring the Hitachi array for NetBackup
      6.  
        Obtaining the Hitachi array serial number and the unique device identifiers
      7.  
        Configuring a NetBackup policy for Hitachi_ShadowImage or Hitachi_CopyOnWrite
    11. About HP-XP arrays
      1.  
        HP-XP array software requirements
      2.  
        Preconfiguration for HP-XP
      3.  
        About communication between NetBackup and the HP-XP array
      4.  
        Determining if the HP-XP command devices are visible
      5.  
        About configuring the HP-XP array for NetBackup
      6.  
        Obtaining the array serial number and unique HP-XP identifiers
      7.  
        Configuring a NetBackup policy for HP_XP_BusinessCopy and HP_XP_Snapshot
    12. About array troubleshooting
      1. Troubleshooting issues pertaining to all arrays
        1.  
          Troubleshooting Solaris issues
        2.  
          Troubleshooting host OS type specification
      2.  
        Troubleshooting NetBackup and EMC CLARiiON arrays
      3.  
        Troubleshooting NetBackup and EMC Symmetrix arrays
      4.  
        Troubleshooting NetBackup and HP EVA arrays
      5. Troubleshooting IBM DS6000 and DS8000 arrays
        1.  
          Snapshot errors with IBM DS6000 and DS8000 arrays (NetBackup status code 156)
      6. Troubleshooting IBM4000 arrays
        1.  
          Snapshot errors encountered with IBM4000 arrays (NetBackup status code 156)
        2.  
          For further reference on IBM System Storage DS4000
      7. Troubleshooting Hitachi arrays
        1.  
          NetBackup policy validation fails with Hitachi arrays
        2.  
          Backup or restore or image expiration fails with Hitachi arrays
  10. Notes on Media Server and Third-Party Copy methods
    1.  
      Disk requirements for Media Server and Third-Party Copy methods
    2.  
      Directives for Media Server and Third-Party Copy methods
    3.  
      Storage units for Media Server and Third-Party Copy methods
    4.  
      Preventing multiplexing on a third-party copy backup
    5.  
      Raw partition backups
    6.  
      Increasing the client read timeout for all clients
    7.  
      Further information on off-host data mover backups
  11. Backup and restore procedures
    1.  
      About performing a backup
    2.  
      About performing a restore
    3. About restores from a FlashBackup backup
      1.  
        Notes for FlashBackup and UNIX client restore
      2.  
        Notes for FlashBackup and Windows client restore
    4.  
      Restoring a large number of files in a clustered file system (VxFS on UNIX Only)
    5. Instant Recovery restore features
      1. About Instant Recovery: block-level restore
        1.  
          Activating and deactivating block-level restore
      2. About Instant Recovery: file promotion
        1.  
          Notes on file promotion
        2.  
          About file promotion
      3. About Instant Recovery: Fast File Resync (Windows clients only)
        1.  
          Notes on Fast File Resync (FFR)
        2.  
          Notes on Fast File Resync (FFR) and the files to be restored
        3.  
          About using Fast File Resync
        4.  
          When NetBackup uses Fast File Resync
      4. About Instant Recovery: point in time rollback
        1.  
          Notes on rollback
        2.  
          Performing snapshot rollback
    6.  
      Notes for restoring individual files from an Instant Recovery snapshot
    7. About configurations for restore
      1.  
        About restoring over the LAN
      2.  
        About restoring over the SAN to a host acting as both client server and media server
      3.  
        About restoring directly from a snapshot
    8. About restoring from a disk snapshot
      1. About restoring on UNIX
        1.  
          Restoring individual files on UNIX
        2.  
          Restoring the entire snapshot on UNIX
      2. About restoring on Windows
        1.  
          Restoring individual files on Windows
        2.  
          Restoring the entire snapshot on Windows
  12. Snapshot management
    1.  
      About NetBackup and CloudPoint integration for snapshot management
    2.  
      Troubleshooting CloudPoint and NetBackup integration issues
  13. Troubleshooting
    1.  
      About gathering information and checking logs
    2. Logging directories for UNIX platforms
      1.  
        UNIX logging directories for backup
      2.  
        UNIX logging directories for restore
      3.  
        snapctl driver messages
    3. Logging folders for Windows platforms
      1.  
        Windows logging folders for backup
      2.  
        Windows logging folders for restore
      3.  
        Configuring VxMS logging
    4.  
      Customer support contact information
    5.  
      Latest patches and updates
    6.  
      Snapshot provider information
    7.  
      Important notes on Snapshot Client
    8.  
      Snapshot Client installation problems
    9. FlashBackup and status code 13
      1.  
        The FlashBackup cache partition may have run out of space
      2.  
        Removing stale snapshots (Solaris)
    10.  
      Single file restore from a FlashBackup Instant Recovery snapshot of a file protected by Windows VSS writer fails
    11.  
      Identifying and removing a left-over snapshot
    12.  
      Removing a VxVM volume clone
    13.  
      Alternate client restore and backup from a snapshot fails
    14.  
      Restore from a snapshot fails with status 2800
    15.  
      Raw Partition restore fails with the message 'FlashBackup-Windows policy restore error'
    16.  
      Snapshot creation fails with error 156
    17.  
      Snapshot fails with error 20
    18.  
      Restore from a snapshot fails with status 133
    19.  
      Backup from snapshot fails with error 50
    20.  
      Backup from snapshot parent job fails with error 4213: Snapshot import failed
    21.  
      Backup host pool creation fails with the error "Failed to fetch host list"
    22.  
      Snapshot job fails and the snapshot command does not recognize the volume name
    23.  
      Snapshot creation fails with error 4220
    24.  
      Snapshot creation fails when the same volume is mounted on multiple mount points of the same host
    25.  
      Snapshot-based backup and restore failure
    26.  
      Multiple snapshot jobs fail with code 156 or 1541.
    27.  
      FlashBackup policy fails, with multiple backup selections [Cache =]
    28.  
      Partial backup failure with 'Snapshot encountered error 156'
    29.  
      Backup of file system validation fails with error 223
    30.  
      Policy validation fails if the specified CIFS share path contains a forward slash
    31.  
      Policy validation fails with status code 223
    32.  
      An NDMP snapshot policy for wildcard backup fails with error 4201
    33.  
      Troubleshooting with bpfis log
    34.  
      Limitations of using HP-UX 11.31
    35.  
      While configuring a policy for snapshot operations, the NetBackup Administration Console hangs
    36.  
      Accelerator enabled incremental backup of NetApp NAS volume
  14. Appendix A. Managing nbu_snap (Solaris)
    1. About managing nbu_snap
      1.  
        Cache for nbu_snap
      2.  
        About determining cache size
      3.  
        About terminating nbu_snap
      4. nbu_snap commands
        1.  
          snapon command
        2.  
          snaplist command
        3.  
          snapcachelist command
        4.  
          snapstat command
        5.  
          snapoff command
  15. Appendix B. Overview of snapshot operations
    1.  
      Introduction to snapshot operations
    2.  
      Pre and post snapshot creation operations
    3.  
      About quiescing the system
    4.  
      About quiescing the database application
    5.  
      About quiescing the stack
    6.  
      File system quiesce
    7.  
      Volume manager data caching
    8.  
      How copy-on-write works
  16.  
    Index

Identifying and removing a left-over snapshot

NetBackup ordinarily removes snapshots after the Snapshot Client backup completes, unless the Keep snapshot after backup parameter was set to Yes. However, as a result of some system failures, such as a system crash or abnormal backup termination, the snapshot may not be removed.

To identify and remove a left-over snapshot

  1. Use the bpfis command with the query option to list the current snapshots. Enter the following on the client or alternate client, depending on the type of backup:
       /usr/openv/netbackup/bin/bpfis query

    This command returns the IDs (FIS IDs) of all current snapshots. For example:

    INF - BACKUP START 3629
    INF - FIS IDs: 1036458302
    INF - EXIT STATUS 0: the requested operation was successfully 
    completed

    In this example, the snapshot ID is 1036458302.

  2. If the bpfis output shows the ID of the snapshot, delete it as follows:
       bpfis delete -id snapshot_id
    

    If bpfis removed the snapshot, you can skip the rest of this procedure.

  3. Solaris, HP, AIX, Linux: if bpfis could not remove the snapshot, enter the following (on the client or alternate client) when no backups are running:
       df -k

    This command displays all mounted file systems, including any snapshots of a mounted file system.

    If a snapshot backup is currently running, the snapshot should not be deleted. NetBackup deletes it when the backup completes.

    Here are two snapshots from a df -k listing:

    /dev/dsk/c1t3d2s4  1048800  73076  914742  8%  /tmp/_vrts_frzn_img__wil_vxfs_1299000
    /dev/vx/dsk/clone_qes_clone/ufs 38383 21678  12867  63%  /tmp/_vrts_frzn_img
    __mix_ufs_1299000

    The snapshot appears in the following form:

    /tmp/_vrts_frzn_img__filesystemname_pid
    
  4. Solaris, HP, AIX, Linux: unmount the unneeded snapshot file systems (on the client or alternate client, depending on the type of backup).

    The next step depends on the type of snapshot.

  5. For nbu_snap (Solaris only):

    • Enter the following to display leftover snaps:

         /usr/openv/netbackup/bin/driver/snaplist
    • To remove a leftover snap, enter

         /usr/openv/netbackup/bin/driver/snapoff snap1 ... snapn
      

      More information is available on snaplist and snapoff.

      See About managing nbu_snap.

  6. For VxVM (Solaris, HP, AIX, Linux) and VVR (Solaris and HP):

    Do the following on the client for VxVM, and on the alternate client for VVR:

    • Enter the following to display unsynchronized mirror disks:

         vxprint -g diskgroup
      
    • Enter the following to resynchronize the mirror disks:

         vxassist -g diskgroup -v volume snapback
  7. For VxVM (Windows):

    • Enter the following to display unsynchronized mirror disks:

          vxdg -g diskgroup dginfo
    • Enter the following to resynchronize the mirror disks:

      vxassist snapback \Device\HarddiskDmVolumes\diskgroup\snap_volume
      
  8. For VxFS_Checkpoint (Solaris, HP, AIX, Linux):

    • Enter the following VxFS command to display the name of the checkpoint:

         /usr/lib/fs/vxfs/fsckptadm list /file_system
      

      Note:

      file_system is the mount point of the primary file system that was backed up, NOT the snapshot file system that was unmounted in a previous step.

      For example, if the snapshot file system that was unmounted is the following:

         /tmp/_vrts_frzn_img__vm2_1765

      the original file system, which should be specified on the fsckptadm list command, is the following:

         /vm2

      Example entry:

         /usr/lib/fs/vxfs/fsckptadm list /vm2

      Output:

      /vm2
      NBU+2004.04.02.10h53m22s:
          ctime                =  Fri Apr 02 10:53:23 2004
          mtime                =  Fri Apr 02 10:53:23 2004
          flags                =  removable

      In this example, the name of the checkpoint is NBU+2004.04.02.10h53m22s.

    • Remove the checkpoint by entering the following:

      /usr/lib/fs/vxfs/fsckptadm remove name_of_checkpoint /file_system
      

      For example:

      /usr/lib/fs/vxfs/fsckptadm remove NBU+2004.04.02.10h53m22s /vm2
    • If the checkpoint cannot be removed, unmount it (umount) and retry the following:

      /usr/lib/fs/vxfs/fsckptadm remove name_of_checkpoint /file_system
      
    • For more detail on removing VxFS clones, refer to the recommended actions for NetBackup status code 156 in the NetBackup Troubleshooting Guide.

  9. For TimeFinder, ShadowImage, BusinessCopy (Solaris or HP only):

    Do the following on the client or alternate client, depending on the type of backup:

    • To discover and remove any VxVM clones:

      See Removing a VxVM volume clone.

    • Enter the following to resynchronize the mirror disks:

      For EMC arrays (TimeFinder):

         symmir -g device_group establish LdevName

      where LdevName is the logical device name of the standard device. For Hitachi and HP arrays (ShadowImage, BusinessCopy):

         pairresync -g groupname -d dev_name

      For more information about EMC, Hitachi, and HP arrays and resynchronizing disks, see the NetBackup Snapshot Client Configuration document:

      http://www.veritas.com/docs/000081320

  10. For VxFS_Snapshot (Solaris or HP only):

    Using the mounted file system from a previous step, unmount the snapshot as follows:

       umount -F vxfs /tmp/_vrts_frzn_img__filesystemname_pid
  11. For FlashSnap (Solaris, HP, AIX, Linux):

    Do the following on the client or alternate client, depending on the type of backup:

    • Find the VxVM disk group:

         vxdg list
    • The format of the disk group name is as follows:

         SPLIT-primaryhost_diskgroup
      

      If vxdg list does not show the disk group, the group might have been deported. You can discover all the disk groups, including deported ones, by entering:

         vxdisk -o alldgs list

      The disk groups in parentheses are not imported on the local system.

    • Deport the VxVM disk group:

         vxdg deport SPLIT-primaryhost_diskgroup
      
    • On the primary (original) client, import and join the VxVM disk group:

         vxdg import SPLIT-primaryhost_diskgroup
          vxrecover -g SPLIT-primaryhost_diskgroup -m
          vxdg join SPLIT-primaryhost_diskgroup diskgroup
      
    • On the primary (original) client, start the volume and snap back the snapshot volume:

      vxvol -g SPLIT-primaryhost_diskgroup start SNAP-diskgroup_volume
      vxassist snapback SNAP-diskgroup_volume
      

      Example:

      In this example, chime is the primary client and rico is the alternate client. 1hddg is the name of the original disk group on chime.

      chime_lhddg is the split group that was imported on rico and must be rejoined to the original group on the primary chime.

      On alternate client rico, enter:

      vxdg deport chime_lhddg

      On primary client chime, enter:

      vxdg import chime_lhddg
      vxrecover -g chime_lhddg -m
      vxdg join chime_lhddg lhddg
      vxvol start SNAP-lhddg-vol01
      vxassist snapback SNAP-lhddg-vol01
  12. For FlashSnap (Windows):

    • Find the VxVM disk group:

         vxdg list
    • The format of the disk group name is as follows:

         SPLIT-primaryhost_diskgroup
      
    • Deport the VxVM disk group:

         vxdg -g split_diskgroup deport
    • On the primary (original) client, import and join the VxVM disk group:

         vxassist rescan
          vxdg -g split_diskgroup import
          vxdg -g split_diskgroup -n diskgroup join
    • On the primary (original) client, snap back the snapshot volume:

      vxassist snapback \Device\HarddiskDmVolumes\diskgroup\snap_volume