Data Domain Cloud Data Movement Troubleshooting

Resumo: Basic troubleshooting steps to investigate data movement failures or issues.

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Instruções

  • Check system alerts
 sysadmin@dd4500# alerts show current
 
Id             Post Time                               Severity         Class             Object                Message
------        -----------------------                  --------            ----------        -------------           ------------------------------------------------------------------
p0-469   Thu Aug 10 11:44:41 2023   CRITICAL      Filesystem   FilesysType=8   EVT-SPACE-00004: Space usage in cloud unit "ECS" has exceeded 100% threshold.
p0-470   Thu Aug 11 06:13:18 2023   CRITICAL      Filesystem   FilesysType=2   EVT-SPACE-00004: Space usage in Data Collection has exceeded 90% threshold.
mo-307  Sun Aug 13 04:17:20 2023   CRITICAL      Filesysm       Tier=ECS            EVT-FMIG-00001: Data Movement has encountered an error
------        -----------------------                  --------            ----------        -------------           ------------------------------------------------------------------
  • Check alert for additional details or check messages.engineering
sysadmin@dd4500# alerts show  current-detailed alert-id mo-307
 
messages.engineering
Aug 13 04:17:21 dd4500 ddfs[14768]: INFO: Event posted: mo-307 Sun Aug 13 04:17:20 2023 CRITICAL Filesysm Tier=ECS EVT-FMIG-00001: Data Movement has encountered an error. EVT-OBJ::Tier=ECS-INFO::Cause=CP space is full
  • Check the Cloud license
    • Has licensed capacity been reached?
       
Capacity licenses:
##   Feature              Shelf Model   Capacity     Mode        Expiration Date
--   ------------------   -----------   ----------   ---------   ---------------
1    CLOUDTIER-CAPACITY   n/a           136.42 TiB   permanent   n/a
--   ------------------   -----------   ----------   ---------   ---------------
  • Check the configuration
    • Is the correct cloud unit listed for the mtree
    • The cloud unit must be set correctly in the DD. 
    • Backup applications cannot modify target unit set in the DD.
sysadmin@dd4500# data-movement policy show
Mtree                          Target(Tier/Unit Name)    Policy           Value      
-----------------              ----------------------                 ---------        -----------
/data/col1/mtree1   Cloud/cloudunit1               age-range   14-100 days 
-----------------              ----------------------                 ---------        -----------
  • Check the data-movement status
sysadmin@dd4500 # data-movement status
Data-movement to cloud tier:
----------------------------
Data-movement is initializing..
Data-movement recall:
---------------------
No recall operations found.
  • Check cloud clean status
    • Cloud cleaning and data movement cannot run concurrently
sysadmin@dd4500# cloud clean status
Previous cloud tier cleaning attempt was unsuccessful.
 Failure reason:
cloud unit "cloudunit2" did not have sufficient cleanable data.
Cloud tier cleaning finished at 2017/03/15 12:16:06.
  • Check logs
Fmig = File migration
  • Search ddfs.info logs for data movement entries. 
  • Search for "Fmig" in the logs around the time of the data movement and to check the sequence of file migration actions.
 

Produtos afetados

Data Domain
Propriedades do artigo
Número do artigo: 000216771
Tipo de artigo: How To
Último modificado: 29 mar. 2024
Versão:  1
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