4 thoughts on - Can’t Boot After Volume Rename

• IIRC this could all be done before rebooting. I know I did it in the past but don’t remember exactly and also don’t remember the exact CentOS
  versions used.

  What I’d try is to rename the VG back to its original name and try to get a bootable system again. Then I think you can make all the changes to fstab and grub and rename again and reboot.

  Regards, Simon

• Get a CentOS Install media , boot from it and select troubleshoot.Then mount your root LV, boot lv , /proc/, /sys, /dev & /run (last 4 with “bind” mount option).Then chroot into the root LV’s mount point and then change grub menu and run “dracut -f –regenerate-all”
  last step is to reboot and test. Best Regards,Strahil Nikolov

  В понеделник, 6 януари 2020 г., 17:05:54 ч. Гринуич-5, Paul Amaral via CentOS написа:

  I renamed my volume with vgrename however I didn’t complete the other steps. Mainly update fstab and intiramfs. Once I booted, I was dropped on the Dracut shell. From here I can see the newly rename VG and I can lvm lvscan as well as activate it, lvm vgchange -ay.

  However I can’t figure out what to do next, I’m assuming I need to regenerate the initramfs and then boot to change grub? Could someone point me in the right direction to recovering a FS from Dracut, or other means, once the volume group name was changed.

  TIA,

  Paul

• Strahil, thanks for your reply, I ended up getting the server to boot under Dracut only, it’s still not booting from the boot menu. It goes to Dracut where it complaints it can’t find any of the lvms. However, when I do lvm vgchange -ay it boots upon exit from Dracut. I did notice that the UUIDs from lvm lvdisplay and blkid are different. Could this be the cause of the problem? I did generate the intiramfs img various times. My volume is named volume-group-1 and I think having the the “-“ on the name is making things worse.

  Thank you for your reply. Paul

  From: Strahil Nikolov
  Sent: Tuesday, January 07, 2020 3:58 AM
  To: CentOS@CentOS.org; Paul Amaral
  Subject: Re: [CentOS] can’t boot after volume rename

  Get a CentOS Install media , boot from it and select troubleshoot.

  Then mount your root LV, boot lv , /proc/, /sys, /dev & /run (last 4 with “bind” mount option).

  Then chroot into the root LV’s mount point and then change grub menu and run “dracut -f –regenerate-all”

  last step is to reboot and test.

  Best Regards,

  Strahil Nikolov

  В понеделник, 6 януари 2020 г., 17:05:54 ч. Гринуич-5, Paul Amaral via CentOS > написа:

  I renamed my volume with vgrename however I didn’t complete the other steps.

  Mainly update fstab and intiramfs. Once I booted, I was dropped on the

  Dracut shell. From here I can see the newly rename VG and I can lvm lvscan

  as well as activate it, lvm vgchange -ay.

  However I can’t figure out what to do next, I’m assuming I need to

  regenerate the initramfs and then boot to change grub? Could someone point

  me in the right direction to recovering a FS from Dracut, or other means,

  once the volume group name was changed.

  TIA,

  Paul

• I actually renamed it back to the original vg name after I passed Dracut and regenerated the initramfa img and it did the trick. I guess it doesn’t like “-“ on volume group names.

  Thank you,

  Paul

  From: Paul Amaral
  Sent: Tuesday, January 07, 2020 12:45 PM
  To: ‘Strahil Nikolov’ ; ‘CentOS@CentOS.org’
  Subject: RE: [CentOS] can’t boot after volume rename

  Strahil, thanks for your reply, I ended up getting the server to boot under Dracut only, it’s still not booting from the boot menu. It goes to Dracut where it complaints it can’t find any of the lvms. However, when I do lvm vgchange -ay it boots upon exit from Dracut. I did notice that the UUIDs from lvm lvdisplay and blkid are different. Could this be the cause of the problem? I did generate the intiramfs img various times. My volume is named volume-group-1 and I think having the the “-“ on the name is making things worse.

  Thank you for your reply. Paul

  From: Strahil Nikolov >
  Sent: Tuesday, January 07, 2020 3:58 AM
  To: CentOS@CentOS.org ; Paul Amaral >
  Subject: Re: [CentOS] can’t boot after volume rename

  Get a CentOS Install media , boot from it and select troubleshoot.

  Then mount your root LV, boot lv , /proc/, /sys, /dev & /run (last 4 with “bind” mount option).

  Then chroot into the root LV’s mount point and then change grub menu and run “dracut -f –regenerate-all”

  last step is to reboot and test.

  Best Regards,

  Strahil Nikolov

  В понеделник, 6 януари 2020 г., 17:05:54 ч. Гринуич-5, Paul Amaral via CentOS > написа:

  I renamed my volume with vgrename however I didn’t complete the other steps.

  Mainly update fstab and intiramfs. Once I booted, I was dropped on the

  Dracut shell. From here I can see the newly rename VG and I can lvm lvscan

  as well as activate it, lvm vgchange -ay.

  However I can’t figure out what to do next, I’m assuming I need to

  regenerate the initramfs and then boot to change grub? Could someone point

  me in the right direction to recovering a FS from Dracut, or other means,

  once the volume group name was changed.

  TIA,

  Paul