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HSM: Slow Metadata Performance - samfs_sync:unable to add task (47), flush done synchronously (Doc ID 2693183.1)

Last updated on OCTOBER 27, 2021

Applies to:

Oracle Hierarchical Storage Manager (HSM) and StorageTek QFS Software - Version 6.1.4 and later
Information in this document applies to any platform.

Symptoms

Since Solaris update 11.4.21.69.0, the site is receiving a large number of "samfs_sync:unable to add task (47), flush done synchronously" messages (multiple per minute) and they are also observing slow metadata performance (samfsdump and sfind taking twice as long).  They are running HSM build 6.1.52

The following entries are seen in /var/adm/messages:

 

Changes

 Upgraded Solaris from 11.4.20.4.0 to 11.4.21.69.0

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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