Bug 990680
| Summary: | when tboot is installed it automatically takes over as kernel of choice | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Dave Sullivan <dsulliva> |
| Component: | tboot | Assignee: | Tony Camuso <tcamuso> |
| Status: | CLOSED WONTFIX | QA Contact: | Release Test Team <release-test-team-automation> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 6.4 | CC: | vincent |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-09-18 13:54:20 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1002711 | ||
This request was not resolved in time for the current release. Red Hat invites you to ask your support representative to propose this request, if still desired, for consideration in the next release of Red Hat Enterprise Linux. Hello, What if I'd like to keep 'tboot' installed but keep my default kernel? I had tboot installed and somehow (investigation going on) the /etc/sysconfig/kernel got modified to point to tboot. Since tboot drops some arguments from the kernel grub.conf, upon the next errata kernel update the system rebooted and lost its network (it was missing biosdevname=0, amongst others). I don't mind keeping the 'tboot' rpm but I don't want it to take actions or make itself the default without my agreement. :) Vincent This Bugzilla has been reviewed by Red Hat and is not planned on being addressed in Red Hat Enterprise Linux 6 and therefore will be closed. If this bug is critical to production systems, please contact your Red Hat support representative and provide sufficient business justification. |
Description of problem: when tboot is installed it automatically takes over as kernel of choice Version-Release number of selected component (if applicable): 6.4 How reproducible: You can install tboot from kickstart %packages @Base +tboot or install from using --optional %packages @Base --optional After a fresh install including optional for @base, tboot is enabled by default. ~~~ # sed -n '/%packages/,/%end/p' /root/anaconda-ks.cfg %packages @Base --optional @Core -NetworkManager %end # rpm -q tboot tboot-1.7.0-4.el6.x86_64 # grep -v ^# /boot/grub/grub.conf default=0 timeout=5 serial --unit=0 --speed=115200 terminal --timeout=5 serial console title Red Hat Enterprise Linux (2.6.32-358.el6.x86_64) root (hd0,0) kernel /tboot.gz logging=vga,serial,memory module /vmlinuz-2.6.32-358.el6.x86_64 ro root=/dev/mapper/vg00-root intel_iommu=on rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_LVM_LV=vg00/swap LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 rd_LVM_LV=vg00/root crashkernel=auto crashkernel=auto console=ttyS0,115200 rd_NO_DM module /initramfs-2.6.32-358.el6.x86_64.img ~~~ Actual results: So we get forced into a tboot boot. Expected results: tboot shouldn't be the default if it installed, it's ok to set up grub with a tboot kernel but it should default to the normal line Additional info: As this is only kernel, grubby won't let you remove it ~~~ # grubby --remove-kernel=/boot/tboot.gz grubby fatal error: unable to find a suitable template grubby: doing this would leave no kernel entries. Not writing out new config. ~~~ So add kernel with grubby then remove tboot kernel (missing root(hd0,0) line but works in my test). May be best to test the new kernel line with reboot before removing (as recovery with both options still in grub.conf is easier). ~~~ # ARGS=$(grep "^[[:space:]]*module /vmlinuz-$(uname -r)" /boot/grub/grub.conf | sed -e 's/^.*x86_64 //' | head -n 1) # grubby --add-kernel=/boot/vmlinuz-$(uname -r) --args="${ARGS}" --initrd=/boot/initramfs-$(uname -r).img --make-default --title "Red Hat Enterprise Linux without tboot ($(uname -r))" # grep -v ^# /boot/grub/grub.conf default=0 timeout=5 serial --unit=0 --speed=115200 terminal --timeout=5 serial console title Red Hat Enterprise Linux without tboot (2.6.32-358.el6.x86_64 kernel /vmlinuz-2.6.32-358.el6.x86_64 ro root=/dev/mapper/vg00-root intel_iommu=on rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_LVM_LV=vg00/swap LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 rd_LVM_LV=vg00/root crashkernel=auto crashkernel=auto console=ttyS0,115200 rd_NO_DM initrd /initramfs-2.6.32-358.el6.x86_64.img title Red Hat Enterprise Linux (2.6.32-358.el6.x86_64) root (hd0,0) kernel /tboot.gz logging=vga,serial,memory module /vmlinuz-2.6.32-358.el6.x86_64 ro root=/dev/mapper/vg00-root intel_iommu=on rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_LVM_LV=vg00/swap LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 rd_LVM_LV=vg00/root crashkernel=auto crashkernel=auto console=ttyS0,115200 rd_NO_DM module /initramfs-2.6.32-358.el6.x86_64.img # grubby --remove-kernel=/boot/tboot.gz # grep -v ^# /boot/grub/grub.conf default=0 timeout=5 serial --unit=0 --speed=115200 terminal --timeout=5 serial console title Red Hat Enterprise Linux without tboot (2.6.32-358.el6.x86_64 kernel /vmlinuz-2.6.32-358.el6.x86_64 ro root=/dev/mapper/vg00-root intel_iommu=on rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_LVM_LV=vg00/swap LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 rd_LVM_LV=vg00/root crashkernel=auto crashkernel=auto console=ttyS0,115200 rd_NO_DM initrd /initramfs-2.6.32-358.el6.x86_64.img ~~~ Now can remove tboot, as not in use by grub. ~~~ # yum -y erase tboot ~~~