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tail emits warning: unrecognized file system type


tail when used on v6.5+ platforms will successfully open a file, but elicit a warning similar to:

tail: unrecognized file system type 0x794c7630 for ‘error_log’. please report this to bug-coreutils@gnu.org. reverting to polling


Older versions of tail, such as shipped with RHEL7.2, do not ship with a version of coreutils that properly detects the magic number for OverlayFS.


Ignore it. This is pending on an upstream vendor patch in coreutils, which patched already.

Updated on July 8, 2019

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