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Oracle Linux: FATAL: Error inserting xfs (/lib/modules/$(uname -r)/kernel/fs/xfs/xfs.ko): Unknown symbol in module, or unknown parameter (see dmesg) (Doc ID 2496209.1)

Last updated on MAY 24, 2020

Applies to:

Linux OS - Version Oracle Linux 6.0 and later
Information in this document applies to any platform.

Symptoms

xfs filesystems can not be mounted after upgrading kernel.

# dmesg | grep -i xfs
[ 62.981691] xfs: Unknown symbol crc32c (err 0)
[ 63.087523] xfs: Unknown symbol crc32c (err 0)
[ 63.216388] xfs: Unknown symbol crc32c (err 0)

# modprobe xfs
FATAL: Error inserting xfs (/lib/modules/$(uname -r)/kernel/fs/xfs/xfs.ko): Unknown symbol in module, or unknown parameter (see dmesg)

The dependency module 'libcrc32c.ko' for xfs is not loaded properly during the boot process.

On the problematic server, crc32c_intel is loaded:
# /sbin/lsmod | grep crc
crc32c_intel 24576 0

On another working server, libcrc32c is loaded:
# /sbin/lsmod | grep crc
libcrc32c 16384 1 xfs

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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