Sorry but that argument is illogical. The only retention period that would ensure that you always have the boot time kernel messages is 'infinity' and that's not a reasonable option for obvious reasons (c.f. LP #1618188).
Sorry but that argument is illogical. The only retention period that would ensure that you always have the boot time kernel messages is 'infinity' and that's not a reasonable option for obvious reasons (c.f. LP #1618188).