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Disk Libraries - Troubleshooting

Table of Contents

MM0009: Backup Jobs using Disk Library with iBRIX CIFS/NFS Mount Paths Fail

MM0011: Cannot Configure a Disk Library

MM0012: Mount Failures in a Job That Accesses a Shared Disk Library

MM0013: Login and Password Prompt Is Always Displayed When You Access the Index Cache, Disaster Recovery Backup, and/or Mount Path

MM0014: Free Space Value for Mounted LUN Disk in Windows 2003 MediaAgent Lists Incorrectly

MM0015: Mount Paths Configured on Isilon Shares Are Marked Offline

MM0016: Commvault Cannot Access the CV_MAGNETIC Folder

MM0017: Performance Decreases on NetApp Disk Libraries When Space Usage Exceeds 85%

MM0019: Disk Library Runs Out of Space After the MediaAgent is Upgraded to Commvault Version 10 or Later

MM0021: Chunk Errors Occur on Nexsan Devices

MM0023: Initiating a Backup Job Displays "No (subclient) data paths were found for the copy" Error

MM0024: Cannot connect to DataServer, please make sure destination MediaAgent is up and running and there is no network / connectivity issue between source and destination MediaAgent

MM0063: Error Code: [62:311]: Failed to Mount Media [name]with Mount Path[location] on MediaAgent [MA name]

MM0064: Unable to Share an Existing Mount Path

MM0065: Mount Path Shared Using DataServer-IP is Marked Offline

Locked User Account With a Mount Path Operation

MM0009: Backup Jobs using Disk Library with iBRIX CIFS/NFS Mount Paths Fail

For more information, see KB Article MM0009.

MM0011: Cannot Configure a Disk Library

Cause

When you configure a disk library, it might fail if:

  • You cannot access the location from the MediaAgent that you want to provide
  • If you have provided the wrong user credentials for the location

Resolution

Make sure that:

  • The location is accessible from the MediaAgent.
  • You have provided correct user credentials for the location.

Cause

When you configure a disk library, it might fail if:

  • You cannot access the location from the MediaAgent that you want to provide
  • If you have provided the wrong user credentials for the location

Resolution

Make sure that:

  • The location is accessible from the MediaAgent.
  • You have provided correct user credentials for the location.

MM0012: Mount Failures in a Job That Accesses a Shared Disk Library

Verify whether the status of the disk library, mount path, and the device is Online.

Cause

If the status is Online, the mount failure might occur if there are no drive letters are available in the operating system to mount the volume for the job.

Resolution

  1. Make sure that there are sufficient drive letters available in the operating system for each device to mount the volume.
  2. If all the drive letters are used, disconnect and make some drive letter available before resuming the job.

MM0013: Login and Password Prompt Is Always Displayed When You Access the Index Cache, Disaster Recovery Backup, and/or Mount Path

Cause

If you access a UNC path that is in different domain, that domain might not have trust relationships established with the domain where the computer is located. This causes the software to prompt  for the User name and Password each time the UNC is accessed.

Resolution

Contact your Network Administrator to set up trust relationships between the domains.

MM0014: Free Space Value for Mounted LUN Disk in Windows 2003 MediaAgent Lists Incorrectly

Cause

When you use LUN Disk Array as UNC path from Windows 2003 machine, the free space from Windows 2003 machine is shown about parent directory instead of actual mounted LUN.

Resolution

You should share the mounted LUN, and then use that as the UNC path.

For example, your disk array is mounted on the remote machine machine1 in the C:\ drive under Folder1 as C:\Folder1\LUN. For a Windows 2003 machine, when you use the UNC path \\machine1\c$\Folder1\LUN as the mount path, the free space that is available for the C drive appears instead of the free space for the mount path. You have to share the folder LUN and use that as the UNC path. That is, \\machine1\LUN.

MM0015: Mount Paths Configured on Isilon Shares Are Marked Offline

Cause

If you use an Isilon device to host a disk library, the mount path might go offline when the user name or password is changed.

Resolution

Upgrade to the Dell EMC Isilon OneFS operating system version 7.0.1.8 or later.

MM0016: Commvault Cannot Access the CV_MAGNETIC Folder

Cause

When your antivirus security software is in the process of scanning the CV_MAGNETIC folder on library mount paths, Commvault cannot access the folder.

Resolution

Exclude the CV_MAGNETIC folder from the antivirus security software scan.

MM0017: Performance Decreases on NetApp Disk Libraries When Space Usage Exceeds 85%

Cause

This is a known issue with NetApp's Data ONTAP. For more information, see http://support.netapp.com/NOW/cgi-bin/bugrellist?bugno=588941.

Resolution

Upgrade to the most recent version of NetApp's Data ONTAP. Contact your NetApp vendor to make sure that the most recent version of Data ONTAP is recommended for your NetApp device.

Resolution

If you cannot upgrade to the most recent version of NetApp’s Data ONTAP, set the reserve space thresholds on the NetApp devices that are managed by Data ONTAP to 15%. Monitor those devices to make sure that disk usage does not exceed 85%.

  1. From the CommCell Browser, expand to Storage Resources | Libraries | <Library>.
  2. Right-click the appropriate mount path, and then click Properties.
  3. Click the Allocation Policy tab.
  4. In the Space Allocation section, select Do not consume more than n GB, and then enter a value that is 85% of the total disk space.
  5. Click OK.

MM0019: Disk Library Runs Out of Space After the MediaAgent is Upgraded to Commvault Version 10 or Later

Symptom

After you upgrade the MediaAgent to Commvault , the disk library runs out of space prematurely. An error similar to the following appears in the CVMA.log file:

28532 6f9c 12/05 12:08:45 ------ WORKER [ ] CVMAMagneticWorker.cpp:5479: Error while opening the mount path label [<disk_library_location>\CV_MAGNETIC\MOUNTPATH_LABEL], error=0xECCC0002:{QiFile.cpp[CQiFile::Open(92)]} + {utfFsUtils.cpp[CQiUTFOSAPI::open(85)]/ErrNo.2.(No such file or directory)-Open failed, File=\\?\<disk_library_location>\CV_MAGNETIC\MOUNTPATH_LABEL, OperationFlag=0x8000, PermissionMode=0x100}

Cause

The input file (mount path label file) is missing from the mount path. This prevents aged data from being pruned.

Resolution

You can create mount path label files using the workflow. For more information, see Predefined Workflow - Create Mount Path Labels.

MM0021: Chunk Errors Occur on Nexsan Devices

Symptom

Chunk errors occur on Nexsan devices with the following errors:

Error Code 40:91:
Failed to Copy or verify Chunk [] in media [], Storage Policy [], Copy [], Host [], Path [], File Number [], Backup Jobs [].\].Data read from media appears to be corrupted. Data read from media appears to be corrupted.

Error Code 62:469:
Data read from media appears to be corrupted.

Log files might include entries similar to the following:

AuxCopy.log located on the corresponding MediaAgent:

[F:\MAG11-F\BASE-F\CV_MAGNETIC\V_6561581\CHUNK_5847058\CHUNK_META_DATA_5847058] file
14490301-16560393 [DM_BASE ] DataMoverSingleInstancer::OpenChunkSpecific: Not honoring readless mode because this job type is [13]. Dest Copy Id [0]
14490301-16560393 [DM_BASE ] Readless mode [false]
CCVAPipelayer::SetEncryptProps() - Entered
CCVAPipelayer::SendCommandToDSBackup() - Sent Command 156 to MediaAgent, Waiting for Response...
[PIPELAYER ] Tail response = Get PL_SET_ENC_PROPS Message Status = 0 dwCode = 0 MsgType = 16 MsgSubType = 156 EventError = 0
Successfully opened the archive files on the media...going to read data.
###### [ NULL] invalid tag header
14490301-16560393 [DM_BASE ] **ERROR** DataMoverSingleInstancer::ReadTagHeader: Failed to convert the tag header to Host byte order. Tag header got =

JobManager.log located on the corresponding MediaAgent:

Scheduler Set pending cause [Failed to Copy or verify Chunk [5847058] in media [CV_MAGNETIC], Storage Policy [...], Copy [1:Primary Disk], Host [...], Path [F:\MAG11-F\BASE-F\CV_MAGNETIC\V_6561581], File Number [121], Backup Jobs [ ].Data read from media appears to be corrupted.aData read from media appears to be corrupted.a]::Client [...] Application [AuxCopy] Message Id [671088731] RCID [14490301] ReservationId [0]. Level [0] flags [0] id [0] overwrite [0] append [1] CustId[1040187861].

Resolution

Older Nexsan firmware must be updated. Use the appropriate version based on your storage device type.

  • For SATABeast 2.5, use firmware version Pp70 or later.
  • For SATABeast 2, use firmware version Nj67 or later.
  • For other devices, contact Nexsan.

A list of the latest firmware release is available at https://helper.nexsansupport.com/.

MM0023: Initiating a Backup Job Displays "No (subclient) data paths were found for the copy" Error

Symptom

After migrating a shared disk library to another MediaAgent within the CommCell, initiating a backup job may display the following error:

No (subclient) data paths were found for the copy. Probably a library has been deconfigured.

Cause

Only one disk library was configured as the data path on the storage policy copy, and that disk library was deconfigured prior to assigning a new disk library as the data path.

Resolution

Change the data path of the associated storage policy copy by following the steps described in Change Default Data Path.

MM0024: Cannot connect to DataServer, please make sure destination MediaAgent is up and running and there is no network / connectivity issue between source and destination MediaAgent

Symptom

If the Data Server IP configured on a mount path , then the data protection jobs might go in a pending state with the following error:

Cannot connect to DataServer, please make sure destination MediaAgent is up and running and there is no network / connectivity issue between source and destination MediaAgent

Cause 1

The native NFS service is running on the data server MediaAgent.

Resolution 1

  1. On the data server MediaAgent, navigate to the Services (Local).
  2. Verify if the NFS local services are running.
  3. Stop the NFS local services and restart the  Commvault  services.

Cause 2

Commvault  services on the data server MediaAgent are offline.

Resolution 2

Restart the  Commvault  services. For more information, see Restarting a Service.

MM0063: Error Code: [62:311]: Failed to Mount Media [name]with Mount Path[location] on MediaAgent [MA name]

For more information, see KB Article MM0063.

MM0064: Unable to Share an Existing Mount Path

If you have a static disk library that was created using a previous version of the Commvault software you may not be able to share the mount path.  Use the MMConvertMagLibToStaticShared script found in the Installation_Directory/Base folder. You can execute the script from the command line using the following command:

qoperation execscript -sn MMConvertMagLibToStaticShared -si "LIBRARY NAME"

Where:

LIBRARY NAME is the name of the library in which the mount path is configured.

For more information on running QScripts, see Command Line Operations using QScripts.

MM0065: Mount Path Shared Using DataServer-IP is Marked Offline

Symptom

A mount path shared using DataServer-IP is marked offline with the following reason;

[Mount path is inaccessible. Check the following.
a. Is the mount path visible to the operating system on the MediaAgent machine.
b. Is the username/password correctly entered.
c. Does this user have read/write privileges to this mount path.]

Cause

A mount path shared using Data Server-IP may be marked offline if the services are stopped in the 'preferred' MediaAgent.

Resolution

  1. From the CommCell Browser, expand to Storage Resources | Libraries | <Library>.
  2. Right-click the mount path which is marked offline, and then click Properties.
  3. Click the Sharing tab.
  4. Note down the preferred MediaAgent. This is the MediaAgent  in which the local path is displayed as an absolute path in the Path column. (The Path for the other MediaAgents will have the prefix IP|.)
  5. Login to this preferred MediaAgent.
  6. Launch Process Manager and then start the services. (See Start Services for step-by-step instructions.)

Locked User Account With a Mount Path Operation

Symptom

User account is locked during a mount path operation with the following error in the Event Viewer:

Cannot logon the user [<ip address>\<user name>] interactively onto the domain.Error [1326][Logon failure: unknown user name

Cause

To establish connection to a shared mount path on a Windows MediaAgent, interactive login rights are needed.

Resolution

  1. From the MediaAgent computer in which the error is reported, add the EnableLogonNewCredentials additional setting as shown in the following table.

    For instructions about adding an additional setting from the CommCell Console, see Adding or Modifying Additional Settings from the CommCell Console.

    Property

    Value

    Name

    EnableLogonNewCredentials

    Category

    MediaAgent

    Type

    Integer

    Value

    1

  2. Restart the services in the MediaAgent computer.

Related Link

https://msdn.microsoft.com/en-us/library/windows/desktop/aa378184(v=vs.85).aspx

Last modified: 12/21/2017 3:08:24 PM