Hello Sergio, thank you for picking up this bug. I realize that this is a very difficult problem.
Regarding the possibilty of an upstream bug: Meanwhile there is a new kernel available: Linux 5.11.0-1028-oracle I will install it and do tests again. This can need some days, because the bug does not always occur. I will inform you as soon as I have results. The offered solution in https://support.oracle.com/knowledge/Oracle%20Linux%20and%20Virtualization/2375753_1.html looks like this: ### Cause The server is running with incorrect system configurations and not following Oracle's Best Practices for OCFS2. Solution Make sure that /usr/bin/updatedb (aka /usr/bin/locate, slocate) does not run against OCFS2 partitions since updatedb, a file indexer, will reduce OCFS2 file I/O performance. To prevent updatedb from indexing OCFS2 partitions, add 'ocfs2' to the PRUNEFS= and/or list OCFS2 volumes specifically in the PRUNEPATHS list in /etc/updatedb.conf e.g. [/etc/updatedb.conf] PRUNEFS="devpts NFS nfs afs proc smbfs autofs auto iso9660 ocfs2" PRUNEPATHS="/tmp /usr/tmp /var/tmp /afs /net /ocfs2-data /ocfs2-index /quorum" export PRUNEFS export PRUNEPATHS References NOTE:237997.1 - Linux OCFS - Best Practices ### I tried to find the related settings, but: ll /etc/updatedb.conf ls: cannot access '/etc/updatedb.conf': No such file or directory ll /usr/bin/locate ls: cannot access '/usr/bin/locate': No such file or directory find / -name "*updatedb*" /usr/share/vim/vim81/syntax/updatedb.vim /usr/share/vim/vim81/ftplugin/updatedb.vim find / -name "*locate*" => result contains only entries belonging to "allocate" or "fallocate" The general settings on the affected systems are the same as on the (working) Ubuntu 18 and Qracle Linux systems. Thanks for helping me! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1959581 Title: OCFS2 intermittently not mountable on a second Node in Ubuntu 20.04.3 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ocfs2-tools/+bug/1959581/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
