Saturday, July 28, 2018
Averatec 2200 Drivers Windows Vista
Averatec 2200 Drivers Windows Vista
We had few of the servers which was similar in file systems, disk partitions, applications, etc .., but was exception in only Volume Group(VG). So I had cloned the systems and thought of renaming the VG, but since root Logical Volume(LV) was configured on the same VG was unable to un-mount online. I had to bring down the server to perform below steps.
Below has been performed on CentOS-6.3 32-bit kernel version - 2.6.32-279.el6
Since it is root volume, we need to umount the file system, insert the CentOS CD/DVD to boot server in rescue shell.
#boot: linux rescue
when it prompts for the questions, choose your answers.
Question 5 : Rescue window
Offers to mount Linux installation in rw, read only or not at all. Either way, we will be provided with a shell. As this systems root partition is on a logical volume in the volume group we wish to rename, we must not mount the system. [ SKIP ]
Make sure all your logical volumes are OFFLINE
# lvm lvscan
INACTIVE /dev/vg_pcmk1/home [1.00 GiB] inherit
INACTIVE /dev/vg_pcmk1/rootvg [13.18 GiB] inherit
INACTIVE /dev/vg_pcmk1/swap [1.46 GiB] inherit
#
#lvm vgscan
found volume group vg_pcmk1
.
.
(output omitted)
- Rename the volume group
#lvm rename vg_pcmk1 vg_pcmk2
- Exit the shell and reboot the server. Let CentOS DVD be in the disk.
#exit
- Reboot the server in the rescue environment and while in Question 5, choose Continue
Eventually, a shell will appear. The system files are in /mnt/sysimage. chroot into the system:
# chroot /mnt/sysimage
sh-4.1#vim /etc/fstab
- Change the entries of the volume group for the logical volumes which are residing.
# grep vg_pcmk2 /etc/fstab
/dev/mapper/vg_pcmk2-rootvg / ext4 defaults 1 1
/dev/mapper/vg_pcmk2-home /home ext4 defaults 1 2
/dev/mapper/vg_pcmk2-swap swap swap defaults 0 0
#
- Change an entry in grub.conf file.
#vim /boot/grub/grub.conf
# grep vg_pcmk2 /boot/grub/grub.conf
kernel /vmlinuz-2.6.32-279.el6.i686 ro root=/dev/mapper/vg_pcmk2-rootvg rd_LVM_LV=vg_pcmk2/rootvg rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rd_LVM_LV=vg_pcmk2/swap rhgb quiet
#
- Create a newly initrd image as below.
# tail -1 /boot/grub/grub.conf
initrd /initrd-2.6.32-279.el6.i686.img
#
As updated above, create new initrd image and this will take some time and will have no output.
#mkinitrd /boot/initrd-$(uname -r).img $(uname -r)
- Exit from shell:
# exit
- Exit from Linux rescue:
# exit
- Remove the CD and boot the server.
Once your server logins, check the VG name, it would be successfully changed.
# df -h | grep vg_pcmk2
/dev/mapper/vg_pcmk2-rootvg
/dev/mapper/vg_pcmk2-home
#
NOTE: If no proper entries in root volume being made, kernel gets PANIC and will not sync and kills init process.
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