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HSM: sammkfs Error Write Once Read Many partitions detected (Doc ID 2812626.1)

Last updated on OCTOBER 06, 2021

Applies to:

Oracle Hierarchical Storage Manager (HSM) and StorageTek QFS Software - Version 6.0 and later
Information in this document applies to any platform.

Symptoms

Customer had one lun of his existing filesystem that was failing with a critical I/O error.  He needs to remove or replace that lun and remake his filesystem.

When you have a hardware problem like this appears to be, the device needs to be replaced and the filesystem needs to be remade.   

Growing the filesystem is only used when the filesystem runs out of space.  For growing a filesystem, all the filesystem eqs need to be found in the position they were in previously.  Unfortunately, when there is a hardware issue with one of the existing filesystem elements/luns that needs to get replaced or removed, the filesystem will need to be remade/restored.  This includes reconfiguring the /etc/opt/SUNWsamfs/mcf file, running 'samd config' to recognize those mcf file changes, using 'sammkfs' to make the new filesystem and using 'samfsrestore' or 'qfsrestore' to restore the metadata or data back into the newly made filesystem.

However, when remaking the filesystem, the 'sammkfs' command is failing with the following error:

Most of the messages above are just informational.  Only the last line saying "Write Once Read Many partitions detected <15 of 15>" needs to be resolved, to allow sammkfs to complete.

 

Cause

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In this Document
Symptoms
Cause
Solution


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