Try to upgrade Ubuntu 10.04 to the next long term release 12.04, but the command do-release-upgrade terminated itself.

The Linode is not using custom kernel but the latest kernel as the screenshot below.


From the terminal output (attached below using Script), it looks like the error has something to do with WARNING:root:estimate_kernel_size_in_boot() returned '0'?

Please share your thoughts if you've experienced similar issues when upgrading Ubuntu 10.04 to the next long term release.

Thank you in advance.

Script started on Fri 13 Nov 2015 11:16:49 AM EST
~$ do-release-upgrade --proposed
Checking for a new ubuntu release

 0% [Working] 
 0% [Working] 
 0% [Working] 
 0% [Working] 
 0% [Working] 
Done Upgrade tool signature

100% [Working] 
100% [Working] 
 0% [Working] 
Done Upgrade tool

100% [Working] 
Done downloading            
authenticate 'precise.tar.gz' against 'precise.tar.gz.gpg' 
extracting 'precise.tar.gz'
[sudo] password for begin: 
WARNING:root:estimate_kernel_size_in_boot() returned '0'?
[?1049h[r[m[2J[H[?7h[?1;4;6l[4l[?1h=[0m(B[1;34r[H        [2J[H[2Jruby1.8
samba-common
samba-common-bin
shared-mime-info
smbclient
snmp
ssl-cert
sudo
sysv-rc
sysvinit-utils
tzdata
ubuntu-keyring
udev
unzip
update-manager-core
update-notifier-common
upstart
util-linux
vim
vim-common
vim-runtime
wget
x11-common


Restoring original system state

Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
Building data structures... Done
=== Command detached from window (Wed Nov  4 17:54:48 2015) ===
=== Command terminated with exit status 1 (Wed Nov  4 17:54:49 2015) ===
[7mPress x to destroy or r to resurrect window[27m  
=== Command terminated with exit status 1 (We[27C[?1l>[34;1H
[?1049l[screen is terminating]
~$ exit
Script done on Fri 13 Nov 2015 11:18:26 AM EST

When did you restore those disk images? Restored disk are 'shrunk'. Maybe resizing them to a larger size might help this issue.

_________________
U.S. Navy Sailor and Developer Evangelist at CircleCI (formerly Linode). Write the Docs NYC organizer. Mets fan for life. Building the Linodians community.

Follow me on Twitter @FelicianoTech.

We've resized the restored backup partition to use the full space as suggested.

We also deleted the old partitions that we were no longer using.

The upgrade command, sudo do-release-upgrade, seems to progress further but still terminates with the same error 'WARNING:root:estimate_kernel_size_in_boot() returned '0'?'

Anything else that I can do to upgrade the Ubutun 10.04 Linode properly?

Just tried doing the same thing and ran into the exact same issue. Did you manage to resolve this? If so what was the end solution?

_________________
-- Puleen

Try pressing 'Y' and continuing when you get that warning.

While people do upgrades and it's quite common, personally, I never upgrade between major versions of distros. I like to do fresh installs to prevent any sort of issues cropping up without me knowing.

_________________
U.S. Navy Sailor and Developer Evangelist at CircleCI (formerly Linode). Write the Docs NYC organizer. Mets fan for life. Building the Linodians community.

Follow me on Twitter @FelicianoTech.

I have the same problem.

Last error in /var/log/dist-upgrade/apt.log = ERROR:root:Unauthenticated packages found.

How can I fix this?

Thank you.