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vSAN APD message that can be safely ignored: Unable to register file system <UUID> for APD timeout notifications: Inappropriate ioctl for device (2145444)

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Symptoms

You see entries in the /var/log/vmkernel.log file, similar to:

2016-05-11T23:11:30.437Z cpu34:35283 opID=d6b83ffe)Vol3: 956: Unable to register file system 21bc3357-bed6-7e9a-a4a9-3464a990bfac for APD timeout notifications: Inappropriate ioctl for device
2016-05-11T23:12:35.974Z cpu22:998827)Vol3: 956: Unable to register file system 21bc3357-bed6-7e9a-a4a9-3464a990bfac for APD timeout notifications: Inappropriate ioctl for device
2016-05-11T23:13:39.196Z cpu20:999104)Vol3: 956: Unable to register file system 21bc3357-bed6-7e9a-a4a9-3464a990bfac for APD timeout notifications: Inappropriate ioctl for device
2016-05-11T23:14:42.304Z cpu18:999402)Vol3: 956: Unable to register file system 21bc3357-bed6-7e9a-a4a9-3464a990bfac for APD timeout notifications: Inappropriate ioctl for device
2016-05-11T23:15:45.964Z cpu0:999659)Vol3: 956: Unable to register file system 21bc3357-bed6-7e9a-a4a9-3464a990bfac for APD timeout notifications: Inappropriate ioctl for device

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

Purpose

The purpose of this article is to clarify the significance of this message.

Cause

These APD messages are being logged in the vmkernel.log when a name space is first mounted in vSAN. This is an expected behavior due to the underlying filesystem design in vSAN.

Resolution

This message has no production impact and can be safely ignored.

See Also

Request a Product Feature

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