NetBackup - media write error(84)

NetBackup - media write error(84)   Diske yazma hatası

Cause:

When the NetBackup Deduplication Engine (spoold) starts, it reads the file segment fingerprints from the deduplication pool. Store operations (that is, writing to the disk) are disabled while the cache is incomplete.  If NetBackup tries to start backup jobs while the cache is incomplete, the jobs fail.

Solution:

After the spoold cache loading is complete, backup jobs and compaction jobs are enabled again. Therefore, the solution is to wait until cache loading is complete.

To determine if spoold finished loading fingerprints:

1. Use your favorite tool to monitor the memory usage of services and daemons on the storage server. Wait until the memory used by spoold does not increase for 5 minutes.  (When spoold loads fingerprints, it allocates memory as needed; spoold does not allocate the maximum amount of memory immediately.)
    
2. Run the following command and examine the output for "put=Yes":
   
   UNIX: /usr/openv/pdde/pdcr/bin/crcontrol --getmode
   Windows: <install_path>\Veritas\pdde\crcontrol --getmode
   
   "put=Yes" means that cache loading is complete. Normal operations should resume.
    
3. If "put=No," examine the <storage_path>/log/spoold/spoold.log file for the following message:
   
   Storage Cache Manager: load completed
   
   The message means that spoold finished loading the fingerprints. However, the new state probably has not been pushed to all processes yet.
    
4. If the spoold.log has the message, wait 5 minutes then run "crcontrol --getmode" again.
    
5. If "put=Yes," cache loading is complete and normal operations will resume.
   
   If "put=No," contact your Symantec support representative.

After the initial start of spoold after the upgrade to 7.5, spoold does not read the entire MSDP for fingerprints. Therefore, successive starts of spoold should occur much faster.

--------------------------------------------------------

NetBackup Deduplication Engine (spoold) başladığında, deduplication pooldan dosya segmetlerini okumaya çalışır.

Dedub disk üzerindeki keyc işlemi tamamlanmadığında diske yazma işlemleri devredışı bırakılır.

Keyc tamamlanmadığı durumda NetBackup üzerinde ki disk yazma işlemi disk yazma hatası verir.

Dedub disk üzerindeki keyc işlemi tamamlandığında diske yazma işlemleri yeniden etkinleştirilir.

NetBackup kurulduğu dizinde Veritas\pdde\ klasöründe " crcontrol --getmode " komutu çalıştırılarak "put=Yes": çıktısı kontrol edili, put değeri YES olmalıdır.

Put değeri No ise, Dedup diski üzerindeki Dedup\log\spoold\spoold.log dosyasında " load completed " mesajı araştırılır.

Log dosyası içerisinde load completed mesajı bulunması durumunda 5 dakika beklenrek "crcontrol --getmode"  komutu yeniden çalıştırılır.

Put değeri YES olduğunda keyc işlemi tamamlanmış demektir, diske yazma işlemleri gerçekleşecektir.