Update notification by Red Hat
Last month we have informed about an important kernel panic case with kernel version greater than 3.10.0-1160.10.1.el7 while using LVM in terms of pvmove command:
Red Hat has officially published an update regarding this case which also covers many more known CVEs:
A new kernel version 3.10.0-1160.21.1.el7 has been released and successfully tested by OTC.
Customer advice
This advice is usually only valid for customers which currently use an existing VM with LVM or plan to use LVM with a new VM!
Existing RHEL 7.9 customers with LVM usage
We strongly recommend to update your existing environments by executing the following commands:
- Login
$ ssh username@hostname - Switch to root
$ sudo -i - Update and check yum updates
$ yum clean all $ yum repolist all $ yum check-udpate # ## ### ========================================================================================================================================================================================================================================== Package Arch Version Repository Size ========================================================================================================================================================================================================================================== Installing: kernel x86_64 3.10.0-1160.21.1.el7 rhui-rhel-7-server-rhui-rpms 50 M Updating: cloud-init x86_64 19.4-7.el7_9.4 rhui-rhel-7-server-rhui-rpms 933 k device-mapper x86_64 7:1.02.170-6.el7_9.4 rhui-rhel-7-server-rhui-rpms 297 k device-mapper-event x86_64 7:1.02.170-6.el7_9.4 rhui-rhel-7-server-rhui-rpms 192 k device-mapper-event-libs x86_64 7:1.02.170-6.el7_9.4 rhui-rhel-7-server-rhui-rpms 192 k device-mapper-libs x86_64 7:1.02.170-6.el7_9.4 rhui-rhel-7-server-rhui-rpms 325 k dmidecode x86_64 1:3.2-5.el7_9.1 rhui-rhel-7-server-rhui-rpms 82 k grub2 x86_64 1:2.02-0.87.el7_9.6 rhui-rhel-7-server-rhui-rpms 34 k grub2-common noarch 1:2.02-0.87.el7_9.6 rhui-rhel-7-server-rhui-rpms 732 k grub2-pc x86_64 1:2.02-0.87.el7_9.6 rhui-rhel-7-server-rhui-rpms 34 k grub2-pc-modules noarch 1:2.02-0.87.el7_9.6 rhui-rhel-7-server-rhui-rpms 858 k grub2-tools x86_64 1:2.02-0.87.el7_9.6 rhui-rhel-7-server-rhui-rpms 1.8 M grub2-tools-extra x86_64 1:2.02-0.87.el7_9.6 rhui-rhel-7-server-rhui-rpms 1.0 M grub2-tools-minimal x86_64 1:2.02-0.87.el7_9.6 rhui-rhel-7-server-rhui-rpms 177 k kernel-tools x86_64 3.10.0-1160.21.1.el7 rhui-rhel-7-server-rhui-rpms 8.1 M kernel-tools-libs x86_64 3.10.0-1160.21.1.el7 rhui-rhel-7-server-rhui-rpms 8.0 M lvm2 x86_64 7:2.02.187-6.el7_9.4 rhui-rhel-7-server-rhui-rpms 1.3 M lvm2-libs x86_64 7:2.02.187-6.el7_9.4 rhui-rhel-7-server-rhui-rpms 1.1 M python-perf x86_64 3.10.0-1160.21.1.el7 rhui-rhel-7-server-rhui-rpms 8.1 M redhat-release-server x86_64 7.9-6.el7_9 rhui-rhel-7-server-rhui-rpms 30 k ========================================================================================================================================================================================================================================= ### ## # $ yum update -y - In some cases a grubby error occurs during kernel upgrade
$ grubby fatal error: unable to find a suitable template - Please check grub configuration file! This must include a new entry for the latest kernel version 3.10.0-1160.
21.1.el7$ cat /boot/grub2/grub.cfg # ## ### menuentry 'Red Hat Enterprise Linux Server (3.10.0-1160.21.1.el7.x86_64) 7.9 (Maipo)' --class fedora --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-simple-d56fc274-de06-499a-959c-c83d53db1fa9' { load_video set gfxpayload=keep insmod gzio insmod part_msdos insmod ext2 if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root d56fc274-de06-499a-959c-c83d53db1fa9 else search --no-floppy --fs-uuid --set=root d56fc274-de06-499a-959c-c83d53db1fa9 fi linux16 /boot/vmlinuz-3.10.0-1160.21.1.el7.x86_64 root=LABEL=ROOT ro console=ttyS0,115200n8 console=tty0 net.ifnames=0 root=UUID=d56fc274-de06-499a-959c-c83d53db1fa9 rw LANG=en_US.UTF-8 initrd16 /boot/initramfs-3.10.0-1160.21.1.el7.x86_64.img } ### ## # - A new grub configuration is required, if the above menu entry was not automatically added. Please reboot!
$ grub2-mkconfig -o /boot/grub2/grub.cfg $ reboot - Check kernel version after reboot.
$ uname -r $ 3.10.0-1160.21.1.el7.x86_64
New RHEL 7.9 customers which plan to use LVM
We strongly recommend to use an image with the following image-id and kernel version 3.10.0-1160.21.1.el7:
6ee08cbf-920b-42d6-8c54-ed779a46410a
Or just use our latest Red Hat Enterprise Linux 7.9 image called Enterprise_RedHat_7_latest.