The grep part is also bug 934269, now fixed. The lvs part: odd because grub2 doesn't invoke lvs itself, only via os-prober as far as I know, and os-prober is already supposed to set an environment variable to suppress those warnings ...
The grep part is also bug 934269, now fixed. The lvs part: odd because grub2 doesn't invoke lvs itself, only via os-prober as far as I know, and os-prober is already supposed to set an environment variable to suppress those warnings ...