Bug 1223237

Summary: os-prober does not detect gentoo's initrd
Product: [Fedora] Fedora Reporter: francesco florian <francesco.florian94>
Component: os-proberAssignee: Hedayat Vatankhah <hedayatv>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 21CC: agk, hedayatv
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: os-prober-1.68-1.fc22 os-prober-1.68-1.fc23 os-prober-1.68-1.fc21 Doc Type: Bug Fix
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Last Closed: 2015-11-01 21:49:54 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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the modified script none

Description francesco florian 2015-05-20 07:53:22 UTC 
Description of problem:
I use fedora grub to generate the grub configuration; when processing gentoo grub2-mkconfig only adds the kernel command (linuxefi /vmlinuz-<version>-gentoo), without the initramfs (initrdefi /initramfs-genkernel-<genkernel_arch>-<kernel_version>-gentoo).

the kernel is compiled with make and copied to /boot with make install, while the initramfs is generated by genkernel

How reproducible:
always

Additional info:
I investigated and found out that the script finding the kernel is /usr/libexec/linux-boot-probes/mounted/90fallback, and it also should handle the initramfs,.
On line 36, searching the initramfs file, it assumes gentoo's kernels are in the form "kernel...", but my kernel (and the default 'make install' result) is in the form "vmlinuz...";
the correct initramfs is not even detected by any of the other cases, because they all assume that the initramfs either begins with initrd or ends with .img, and none is true in my case.
To solve the problem i added a line
initrdname5=$(echo "$kernfile" | sed "s/vmlinu[zx]/initramfs\*/")
and then in (the old) line 38 i added the new initrdname5 variable:
for initrd in $(eval ls "$initrdname" "$initrdname1" "$initrdname2" "$initrdname3" "$initrdname4" "$initrdname5" 2>/dev/null); do

this makes a working grub.cfg which includes the gentoo's initrdefi line
Comment 1 francesco florian 2015-05-20 07:56:04 UTC 
Created attachment 1027565 [details]
the modified script
Comment 2 Fedora Update System 2015-10-20 21:17:44 UTC 
os-prober-1.68-1.fc21 has been submitted as an update to Fedora 21. https://bodhi.fedoraproject.org/updates/FEDORA-2015-1441631cfe
Comment 3 Fedora Update System 2015-10-20 21:17:49 UTC 
os-prober-1.68-1.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2015-2dae926f73
Comment 4 Fedora Update System 2015-10-24 12:11:03 UTC 
os-prober-1.68-1.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
$ su -c 'dnf --enablerepo=updates-testing update os-prober'
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-2dae926f73
Comment 5 Fedora Update System 2015-10-26 10:28:23 UTC 
os-prober-1.68-1.fc21 has been pushed to the Fedora 21 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
$ su -c 'dnf --enablerepo=updates-testing update os-prober'
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-1441631cfe
Comment 6 Fedora Update System 2015-10-26 18:30:47 UTC 
os-prober-1.68-1.fc22 has been pushed to the Fedora 22 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
$ su -c 'dnf --enablerepo=updates-testing update os-prober'
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-6bfd7075b4
Comment 7 Fedora Update System 2015-11-01 21:49:52 UTC 
os-prober-1.68-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2015-11-04 20:54:42 UTC 
os-prober-1.68-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2015-11-14 01:51:42 UTC 
os-prober-1.68-1.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.