Exalogic Virtual : Hang of ZFS Storage Appliance with "devi_removed timeout" Warning Observed in debug.sys log (Doc ID 2996215.1)

Last updated on JANUARY 16, 2024

Applies to:

Symptoms

In Exalogic racks (Virtual), we observed the issue of ZFS Active storage head hangs while the node is still accessible causing the Guest VM's to hang.

When checking the ZFS log messages , we can observe the stack trace by running the below commands.

Exalogic_sn01:> confirm shell egrep -i "devi_removed timeout" /var/ak/logs/debug.sys
Exalogic_sn02:> confirm shell egrep -i "devi_removed timeout" /var/ak/logs/debug.sys

Other Symptoms:

- Cannot access to the share on Active node
- ZFS command prompt and BUI hung.
- Able to get into the ZFS shell, but the commands are very slow/hung.

Changes

This issue can be noticed on Exalogic July 2023 PSU Version  (2.0.6.4.230718) or Jan 2024 PSU Version  (2.0.6.4.240119)

Cause

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