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Bug 519488 - hanbook should not tell users to lazy umount /mnt/gentoo/boot
Summary: hanbook should not tell users to lazy umount /mnt/gentoo/boot
Status: RESOLVED FIXED
Alias: None
Product: [OLD] Docs on www.gentoo.org
Classification: Unclassified
Component: Installation Handbook (show other bugs)
Hardware: All Linux
: Normal critical (vote)
Assignee: Sven Vermeulen (RETIRED)
URL: http://www.gentoo.org/doc/en/handbook...
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-08-09 11:30 UTC by nobody
Modified: 2014-08-17 16:38 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description nobody 2014-08-09 11:30:42 UTC
I only check the amd64 handbook part, but it should be fix in every installation guide that do that.
Please note http://wiki.gentoo.org/wiki/Complete_Handbook/Finishing_off#Exiting_the_chrooted_environment doesn't have that problem.

It's unsafe to lazy umount a live filesystem, so suggesting to lazy umount /mnt/gentoo/boot is dangerous for the user boot partition.
As soon as /mnt/gentoo/boot is lazy umount, nothing prevent user from umounting /mnt/gentoo and rebooting, while /mnt/gentoo/boot might still be in use and need more time to finish works, endup in a damage filesystem.

Handbook must be fix to :
1/ prevent damaging the user boot filesystem
2/ avoid teach user bad manner to use lazy umount instead of classic umount on any live filesystem. Hanbook is a teacher for many new users, if handbook teach them to lazy umount their boot, they might always lazy umount it later without knowning what they are doing.


Reproducible: Always




Seen because of http://forums.gentoo.org/viewtopic-t-997060.html thread that expose it.
Comment 1 Sven Vermeulen (RETIRED) gentoo-dev 2014-08-17 16:38:50 UTC
Lazy umount is no longer used for the persistent directories