If a system using ext4 is repeatedly and frequently shut down, the file system may be corrupted. This issue is considered to be a corner-case due to the difficulty required to replicate. The issue exists in upstream code and proposed patches are currently under review. (Bug ID 27547113)

If an xfs file system is repaired by using the xfs_repair command, and there are invalid inode counts, the utility may fail to repair the corrupted link counts and return errors while verifying the link counts. The issue is currently under investigation, but appears to be related to the xfsprogs-4.15-1 package that is released with UEK R5. The issue might not appear when using the earlier xfsprogs-4.5.0-18.0.1 package version, which available in the ol7_latest yum repository. (Bug ID 28070680)