Bug 748964

Summary: grub2-mkconfig does not work with an unpopulated GRUB_PREFIX (i.e. before grub2-install) if using a serial console
Product: [Fedora] Fedora Reporter: Adam Williamson <awilliam>
Component: grub2Assignee: Peter Jones <pjones>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: dennis, mads, pbrobinson, pjones, the.ridikulus.rat
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2012-03-09 18:35:06 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 752649    
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Description Flags
remove serial.mod check none

Description Adam Williamson 2011-10-25 17:50:29 UTC 
This is a Rawhide 'clone' of https://bugzilla.redhat.com/show_bug.cgi?id=736993 to see if we can fix it better: an ugly hack is going into F16 anaconda to work around the bug for now.

grub2's /etc/grub.d/00_header has this code:

if [ "x$serial" = x1 ]; then
    if ! test -e ${GRUB_PREFIX}/serial.mod ; then
	echo "Serial terminal not available on this platform." >&2 ; exit 1
    fi

so if we're using a serial console and GRUB_PREFIX/serial.mod doesn't exist - which it won't, if grub2-install has never been run - mkconfig simply throws a hissy fit and exits. This means that anaconda bootloader installation fails in serial console installs as things stand, because grub2-mkconfig is run before grub2-install, as you'd think would make sense.

The ugly hack for F16 is to run grub2-install once before mkconfig and then again afterwards, but he thinks there should be a better 'real fix', hence this bug.
Comment 1 Brian Lane 2012-03-08 21:49:13 UTC 
Created attachment 568753 [details]
remove serial.mod check
Comment 2 Adam Williamson 2012-03-09 18:35:06 UTC 
736993 got re-opened for f17, so we can just consider this a real dupe now and follow up there.



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*** This bug has been marked as a duplicate of bug 736993 ***