Veritas NetBackup Snapshot Client Administrator's Guide
- Introduction
- Snapshot Client features at a glance
- Snapshot Client features
- About snapshot basics
- Benefits of copy-on-write versus mirror
- About local backup of a snapshot
- Off-host backup overview
- Off-host backup methods
- Snapshot Client requirements
- Snapshot Client terminology
- Snapshot Client assistance
- About open file backups for Windows
- Installation
- Policy configuration
- Notes on Snapshot Client policies
- Configuring a Snapshot Client policy
- Backup Selections tab options when configuring a policy
- Off-host backup configuration options
- Automatic snapshot selection
- Selecting the snapshot method
- Snapshot methods
- Configuration parameters for Snapshot Client
- Cache device path parameter
- Delay in seconds between disk group split retries parameter
- IBC receive timeout parameter (seconds)
- IBC send timeout parameter (seconds)
- Keep snapshot after backup parameter
- Maximum number of volumes to resynchronize concurrently parameter
- Maximum Snapshots parameter (Instant Recovery only)
- Number of times to retry disk group split parameter
- Provider Type parameter
- Resynchronize mirror in background parameter
- Snapshot Attribute parameter
- Sync I/O delay in milliseconds parameter (UNIX only)
- Sync region size in MB parameter (UNIX only)
- Wait for mirror sync completion parameter
- Important note on VSS and disk arrays
- Synchronize mirror before the backup parameter
- Snapshot Resources
- Configuring backup scripts
- About using alternate client backup
- Configuring alternate client backup
- Policy configuration tips
- About disabling snapshots
- FlashBackup configuration
- Instant Recovery configuration
- About Instant Recovery capabilities
- Instant Recovery requirements
- Instant Recovery restrictions
- Giving full server privileges to the media server
- About Instant Recovery
- Configuring a policy for Instant Recovery
- About sizing the cache for Instant Recovery copy-on-write snapshots
- About configuring VxVM
- Modifying the VxVM or FlashSnap resync options for point in time rollback
- Instant Recovery for databases
- About storage lifecycle policies for snapshots
- Network Attached Storage (NAS) snapshot configuration
- Configuration of software-based snapshot methods
- Support for Cluster Volume Manager Environments (CVM)
- Configuration of snapshot methods for disk arrays
- About the new disk array snapshot methods
- Disk array configuration tasks
- OS-specific configuration tasks
- About VSS configuration (Windows)
- About EMC CLARiiON arrays
- EMC CLARiiON software requirements for UNIX
- Veritas support for VSS Snapshot and EMC CLARiiON
- Diagram of installed software for EMC CLARiiON
- Verifying connectivity from client to array
- About resolving host names on the network
- Configuring NetBackup to access the CLARiiON array
- Adding clients to a CLARiiON storage group
- Configuring for EMC_CLARiiON_SnapView_Clone
- Creating a clone private LUN with the EMC Navisphere Web interface
- Creating a clone group and select a LUN as source
- Adding clone LUNs to the clone group
- Obtaining the device identifier for each source and clone LUN
- About configuration for EMC_CLARiiON_SnapView_Snapshot
- Configuring a reserved LUN pool for the storage processors
- Configuring a NetBackup policy for a CLARiiON array method
- Common CLARiiON array configuration problems
- About EMC Symmetrix arrays
- EMC Symmetrix DMX software requirements
- Clone emulation flag can cause snapshots to fail
- EMC snapshot operation fails
- Support for EMC Symmetrix with Volume Shadow Copy Service
- Prerequisites for using EMC Symmetrix disk arrays
- Configuring NetBackup clients to use EMC Symmetrix
- About configuring NetBackup to access the Symmetrix array
- About configuration for EMC_TimeFinder_Mirror
- About configuration for EMC_TimeFinder_Clone
- About configuration for EMC_TimeFinder_Snap
- Configuring a policy for EMC_TimeFinder methods
- About HP EVA arrays
- Prerequisites for working with HP EVA arrays
- HP EVA software requirements for UNIX
- Diagram of installed software for HP EVA
- Veritas support for VSS Snapshot and HP EVA
- Verifying connectivity from clients to array using SSSU 5.0
- Configuring NetBackup to access the EVA array
- Configuring a NetBackup policy for an HP EVA array method
- HP EVA restrictions
- About IBM DS6000 and DS8000 arrays
- IBM DS6000 and DS8000 software requirements
- Preconfiguration for IBM arrays
- Configuring NetBackup to access the IBM DS6000 or DS8000 array
- Configuring the IBM array for NetBackup
- Using DSCLI commands to obtain unique IBM identifiers
- Configuring a NetBackup policy for IBM_DiskStorage_FlashCopy
- For further reference on IBM arrays
- About IBM DS4000 array
- About Hitachi SMS/WMS/AMS, USP/NSC, USP-V/VM
- Hitachi array software requirements
- Preconfiguration for Hitachi
- About communication between NetBackup and the Hitachi array
- Determining if the Hitachi command devices are visible
- About configuring the Hitachi array for NetBackup
- Obtaining the Hitachi array serial number and the unique device identifiers
- Configuring a NetBackup policy for Hitachi_ShadowImage or Hitachi_CopyOnWrite
- About HP-XP arrays
- HP-XP array software requirements
- Preconfiguration for HP-XP
- About communication between NetBackup and the HP-XP array
- Determining if the HP-XP command devices are visible
- About configuring the HP-XP array for NetBackup
- Obtaining the array serial number and unique HP-XP identifiers
- Configuring a NetBackup policy for HP_XP_BusinessCopy and HP_XP_Snapshot
- About array troubleshooting
- Notes on Media Server and Third-Party Copy methods
- Disk requirements for Media Server and Third-Party Copy methods
- Directives for Media Server and Third-Party Copy methods
- Storage units for Media Server and Third-Party Copy methods
- Preventing multiplexing on a third-party copy backup
- Raw partition backups
- Increasing the client read timeout for all clients
- Further information on off-host data mover backups
- Backup and restore procedures
- About performing a backup
- About performing a restore
- About restores from a FlashBackup backup
- Restoring a large number of files in a clustered file system (VxFS on UNIX Only)
- Instant Recovery restore features
- Notes for restoring individual files from an Instant Recovery snapshot
- About configurations for restore
- About restoring from a disk snapshot
- Troubleshooting
- About gathering information and checking logs
- Logging directories for UNIX platforms
- Logging folders for Windows platforms
- Customer support contact information
- Latest patches and updates
- Snapshot provider information
- Important notes on Snapshot Client
- Snapshot Client installation problems
- FlashBackup and status code 13
- Single file restore from a FlashBackup Instant Recovery snapshot of a file protected by Windows VSS writer fails
- Identifying and removing a left-over snapshot
- Removing a VxVM volume clone
- Alternate client restore and backup from a snapshot fails
- Restore from a snapshot fails with status 2800
- Raw Partition restore fails with the message 'FlashBackup-Windows policy restore error'
- Snapshot creation fails with error 156
- Snapshot fails with error 20
- Snapshot job fails and the snapshot command does not recognize the volume name
- Snapshot creation fails with error 4220
- Snapshot creation fails when the same volume is mounted on multiple mount points of the same host
- Snapshot-based backup and restore failure
- Multiple snapshot jobs fail with code 156 or 1541.
- FlashBackup policy fails, with multiple backup selections [Cache =]
- Partial backup failure with 'Snapshot encountered error 156'
- Backup of file system validation fails with error 223
- Policy validation fails if the specified CIFS share path contains a forward slash
- An NDMP snapshot policy for wildcard backup fails with error 4201
- Troubleshooting with bpfis log
- Limitations of using HP-UX 11.31
- Appendix A. Managing nbu_snap (Solaris)
- Appendix B. Overview of snapshot operations
Storage lifecycle polices and Snapshot Client troubleshooting
The section includes information about various error messages related to SLPs and snapshots.
If you configure a snapshot method for a policy, and the schedule specifies a lifecycle policy, the life cycle policy must include a snapshot destination. Otherwise, an error such as the following appears in the NetBackup Problems report:
snapshot backup: tashina11_1204305543 cannot be used with a
lifecycle policy NoSnapshot that does not include a snapshot
destination.Error 156 can be a result of different problems, listed below are some of them:
VxVM failing to get the version of the disk group, run appropriate VxVM command outside of NetBackup to see whether you can get the version information for the disk group in use.
Bpfis log
10:43:58.436 [28336] <32> onlfi_fim_dev_info: FTL - VfMS error 11; see following messages:10:43:58.437 [28336] <32> onlfi_fim_dev_info: FTL - Fatal method error was reported 10:43:58.437 [28336] <32> onlfi_fim_dev_info: FTL - vfm_freeze: method: vxvm, type: FIM, function: vxvm_freeze 10:43:58.437 [28336] <32> onlfi_fim_dev_info: FTL - VfMS method error 10; see following message: 10:43:58.437 [28336] <32> onlfi_fim_dev_info: FTL - vxvm__get_dgversion: Cannot get version for disk group: dgdb001 10:43:58.437 [28336] <4> onlfi_thaw: INF - Thawing /ora/db001/data001 using snapshot method vxvm. 10:43:58.448 [28336] <4> onlfi_thaw: INF - do_thaw return value: 0 10:43:58.454 [28336] <16> bpfis: FTL - snapshot preparation failed, status 156
The device that is to backup by this process is being used by another process. Check whether any other process is holding the same device.
Bpfis log
00:26:19.025 [2826] <2> onlfi_vfms_logf: INF - lock pid(2902) != pid(2826): /usr/openv/netbackup/online_util/db_cntl/__LOCKFILE_EMC: SYMMETRIX:970960001000 00:26:19.025 [2826] <2> onlfi_vfms_logf: INF - TimeFinder_rebuild: Cannot get lock on device: /dev/rdsk/c3t5006048C4A85A400d1s2 ...... 00:26:19.025 [2826] <32> rebuild_fim_list: FTL - TimeFinder_rebuild: Cannot get lock on device: /dev/rdsk/c3t5006048C4A85A400d1s2 00:26:19.025 [2826] <32> splthost_rebuild: FTL - rebuild_fim_list() failed 00:26:19.037 [2826] <4> bpfis Exit: INF - EXIT STATUS 156: snapshot error encountered
Policy validation fails for valid backup selection. If there filer's volume is mounted on a windows client, run NetBackup client service on the client and the alternate client with a valid credentials to access CIFS share, and check that the filers are up, and the volume is seen mounted on the windows client.
Bpfis log
11:49:40.727 [15240.13716] <16> bpfis main: FTL - process_fs_list() failed, status 71 11:49:40.727 [15240.13716] <2> ol_cleanup: INF - removing C:\Program Files\Veritas\NetBackup\temp\unknown+15240+1.std_filelist 11:49:40.727 [15240.13716] <4> bpfis Exit: INF - EXIT STATUS 71: none of the files in the file list exist 11:49:40.743 [15240.13716] <2> stop_keep_alive_thread: INF - Stop keep_alive thread 11:49:40.743 [15240.13716] <2> bpfis Exit: INF - Close of stdout
For windows client, live browse from the snapshot fails with the following error message. Make sure that NetBackup client service on the client and the alternate client is running with a valid credential to access CIFS share
ERROR: permissions denied by client during rcmd.
Snapshot backup for windows client fail with status 55. Make sure that NetBackup client service on the client and the alternate client is running with a valid credential to access CIFS share.
Bpfis log
10:46:00.131 [2612.7880] <4> bpcd_request_mount: get volume guid from <frag-id> failed with 55 10:46:00.131 [2612.7880] <4> bpcd_request_mount: return mntdev NO_MOUNT_DEVICE 10:46:00.131 [2612.7880] <16> bpcd_get_fileinfo: bpcd_request_mount failed with error[55] 10:46:00.147 [2612.7880] <2> bpcd_get_fileinfo: sent status 55 to bpdbm
Live browse or 'backup from snapshot' operation for windows client fail with error 43, status 156. Enable create_ucode & convert_ucode on primary volume.
Bpfis log
04:43:44.656 [3040.3900] <2> onlfi_vfms_logf: INF - snapshot services:ostfi:Wed Aug 24 2011 04:43:44.640000 <Thread id - 3900> Failed to import snapshot [*************] 04:43:44.718 [3040.3900] <2> onlfi_vfms_logf: INF - snapshot services: ostfi:Wed Aug 24 2011 04:43:44.718000 <Thread id - 3900> OST Library call failed with message (STS API sts_create_export failed with error code : 2060022) 04:43:44.718 [3040.3900] <2> onlfi_vfms_logf: INF - snapshot services: ostfi:Wed Aug 24 2011 04:43:44.718000 <Thread id - 3900> COSTPlugin::importTreeNode - Could not import device[************]
NBUAdapter log
0 RESTORE :2104 111 0 115851 2011/08/24 04:58:51 Volume name = f3070-238-15:/NetBackup_1314174973_mirror, dest snap f270-247-156_test6 1 RESTORE :2104 44 0 115851 2011/08/24 04:58:51 share name:NBU_Share_NetBackup_1314174973_mirror_ f270-247-156_test6_2011_08_24_04_36_14 0 RESTORE :2104 6 0 115851 2011/08/24 04:58:51 add_cifs_export : Failed to get response. Error 22 : Directory "/vol/NetBackup_1314174973_mirror/.snapshot/f270-247-156_test6" does not exist. 1 STRWIDE :2104 1 0 115851 LFB: Need 111 chars to store wide copy of UTF8 'Directory "/vol/NetBackup_1314174973_mirror/.snapshot/f270-247-156_test6" does not exist. '
See Configuring a storage lifecycle policy to manage snapshot-based backups for Instant Recovery .