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New ASMLib / oracleasm Disk Gets "header_status=Unknown" - Cannot be Added to ASM Diskgroup (Doc ID 391136.1)

Last updated on MAY 26, 2021

Applies to:

Oracle Cloud Infrastructure - Version N/A and later
Linux OS - Version Oracle Linux 5.0 and later
Linux x86
Linux x86-64

Symptoms

After creating/labelling new ASM disks via ASMLib, the ASM instance V$ASM_DISK view reports the header_status of the disk as "UNKNOWN" instead of "PROVISIONED".
Consequently, the new ASM disks cannot be added to an ASM diskgroup.
Attempting to rescan the devices via ASMLib fails with:

Changes

ASMLib (oracleasm) is misconfigured or suboptimally configured.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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