Public bug reported:
The current bionic kernel (4.15) contains a known bug in the OCFS2
distributed filesystem, which can cause all nodes (!) of a redundant
cluster to crash. More information on this bug (including the patch) can
be found here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=841144
This fix was included upstream in 4.16, so it is included in the HWE
stack, but not in the GA kernel.
In my opinion this is quite severe bug, because it can bring a whole
redundant setup down (this happened to us). This patch should be
backported to 4.15.
#cat /proc/version_signature
Ubuntu 4.15.0-45.48-generic 4.15.18
# lsb_release -rd
Description: Ubuntu 18.04.2 LTS
Release: 18.04
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: bionic
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https://bugs.launchpad.net/bugs/1818501
Title:
kernel BUG at fs/ocfs2/alloc.c:1514
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