Bug 35541123 - Oracle ZFS Storage Appliance: "devi_removed timeout on disk@<null string>" Output Continuously (Doc ID 2987213.1)

Last updated on JANUARY 12, 2024

Applies to:

Oracle ZFS Storage ZS4-4 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS5-2 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS5-4 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage Appliance Racked System ZS7-2 Mid-Range - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage Appliance Racked System ZS7-2 High-End - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

When about to perform an OS upgrade to versions OS8.8.62 through OS8.8.64 and if Western Digital 14TB disks drives are in use the disk firmware will be upgraded, the following symptoms will be observed.

Manufacturer	Model	Firmware
Western Digital	W7214A520ORA014T	A2W0
Western Digital	W7214A524ORA014T	C2W0

When the firmware on a disk is being upgraded, that specific disk will briefly be taken offline in order for the firmware update to take place. Once the firmware update has completed for that specific disk, it will

then be brought back online, and the process will repeat for the next disk being upgraded. The aforementioned disk models may potentially encounter difficulty in offlining the disk which may in-turn result in

one or more of the following symptoms:

ZFS Appliance node not able to join the cluster
The Web-Browser User Interface (BUI) not accessible
The Command Line Interface (CLI) dropping to emergency mode
Clients unable to access data
Commands not returning and/or slow to return
Disk firmware updates appear to be stuck and not continuing
etc.

This issue is most prevalent amongst 14TB disks during an OS upgrade. However, in some instances this issue may also happen outside of a system upgrade with versions at least as far back as AK 8.8.57 on other drive models. If the issue is encountered, the affected ZFS Appliance node will need to be rebooted. A service request should be opened so that Oracle Support can review the problem and provide the workflow as needed.

Changes

Upgrade of Appliance Kit (AK) requiring upgrade of disk drive firmware
Additional disk drive fault that cause the disk drive to reset

Cause

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In this Document

Planning An OS Upgrade

References

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Bug 35541123 - Oracle ZFS Storage Appliance: "devi_removed timeout on disk@<null string>" Output Continuously (Doc ID 2987213.1)

Applies to:

Symptoms

Changes

Cause

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