For the benefit of future travellers this can very easily break kernel-crash-dump, as the environment that you kexec into on crash respects fs_pass, even for / and so if the crash caused any FS inconsistency, the crash dump fails.
For the benefit of future travellers this can very easily break kernel-crash-dump, as the environment that you kexec into on crash respects fs_pass, even for / and so if the crash caused any FS inconsistency, the crash dump fails.