Hi,
On 13-06-18 05:40, Alexander E. Patrakov wrote:
Hans de Goede <hdego...@redhat.com>:
Hi All,
So as you may have heard, I'm working on hiding the grub-menu
by default on single OS Fedora Workstation. Part of the plan
here is to detect if a previous boot was successful and
cleanly shutdown the machine and show the menu (not hide the
menu) if the previous boot has failed to set either the
boot_success or shutdown_success flags:
https://fedoraproject.org/wiki/Changes/HiddenGrubMenu
I think that I have a possibly better idea regarding shutdown. The
idea is to modify GRUB so that it can see whether a filesystem has
been cleanly unmounted, and use this condition in the "if" blocks. If
the root filesystem has not been cleanly unmounted, then the shutdown
has likely failed, possibly because the user has pressed a power
button for 5 seconds. The problem with this solution is that, upon
hibernation, the filesystem will be always dirty (i.e.: false
positive), but we can probably manage it with another flag in grubenv.
Thank you for the suggestion, that certainly is an interesting idea,
but it would require grub to scan all block devices and check
all filesystems which will slow things down significantly and if
their then is some old left-over partition somewhere which is
not used, it will always get a false positive.
That combined with the hibernate issue makes me think that this
is more trouble then it is worth.
I've accepted that we won't be able to detect unclean shutdowns
and we can live with that.
Still as said, thank you for thinking along with us.
Regards,
Hans
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