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Sunday 16 July 2017

Crossgrading a complex Desktop and Debian Developer machine running Debian 9

This article is an experiment in progress, please recheck, while I am updating with the new information.

I have a very old installation of Debian, possibly since v2, dot not remember, that I have upgraded since then both in software and hardware. Now the hardware is 64bits, runs a kernel of 64bits but the run-time is still 32bits. For 99% of tasks this is very good. Now that I have made many simulations I may have found a solution to do a crossgrade of my desktop. I write here the tentative procedure and I will update with more ideias on the problems that I may found.

First you need to install a 64bits kernel and boot with it. See my previous post on how to do it.

Second you need to do a bootstrap of crossgrading and the instalation of all the libs as amd64:

 apt-get clean
 apt-get upgrade
 apt-get --download-only install dpkg:amd64 tar:amd64 apt:amd64 bash:amd64 dash:amd64 init:amd64 mawk:amd64
 dpkg --list > original.dpkg
 for pack32 in $(grep i386 original.dpkg | awk '{print $2}' ) ; do 
   echo $pack32 ; 
   if dpkg --status $pack32 | grep -q "Multi-Arch: same" ; then 
     apt-get --download-only install -y --allow-remove-essential ${pack32%:i386}:amd64 ; 
   fi ; 
 done
 cd /var/cache/apt/archives/
 dpkg --install dpkg_*amd64.deb tar_*amd64.deb apt_*amd64.deb bash_*amd64.deb dash_*amd64.deb *.deb
 dpkg --configure --pending
 dpkg -i --skip-same-version dpkg_1.18.24_amd64.deb apt_1.4.6_amd64.deb bash_4.4-5_amd64.deb dash_0.5.8-2.4_amd64.deb mawk_1.3.3-17+b3_amd64.deb *.deb

 dpkg --install /var/cache/apt/archives/*_amd64.deb
 dpkg --install /var/cache/apt/archives/*_amd64.deb
 dpkg --print-architecture
 dpkg --print-foreign-architectures

But this step does not prevent the apt-get install to have broken dependencies. So instead of only installing the libs with dpkg -i, I am going to try to install all the packages with dpkg -i:

apt-get clean
apt-get upgrade
apt-get --download-only install dpkg:amd64 tar:amd64 apt:amd64 bash:amd64 dash:amd64 init:amd64 mawk:amd64
dpkg --list > original.dpkg
for pack32 in $(grep i386 original.dpkg | awk '{print $2}' ) ; do 
  echo $pack32 ; 
  if dpkg --status $pack32 | grep -q "Multi-Arch: same" ; then 
    apt-get --download-only install -y --allow-remove-essential ${pack32%:i386}:amd64 ; 
  fi ; 
done
cd /var/cache/apt/archives/
dpkg --install dpkg_*amd64.deb tar_*amd64.deb apt_*amd64.deb bash_*amd64.deb dash_*amd64.deb *.deb
dpkg --configure --pending
dpkg --install dpkg_*_amd64.deb apt_*_amd64.deb bash_*_amd64.deb dash_*_amd64.deb mawk_*_amd64.deb *.deb

dpkg --install /var/cache/apt/archives/*_amd64.deb
dpkg --install /var/cache/apt/archives/*_amd64.deb
dpkg --print-architecture
dpkg --print-foreign-architectures

Forth, do a full crossgrade:

 if ! apt-get install --allow-remove-essential $(grep :i386 original.dpkg | awk '{print $2}' | sed -e s/:i386//) ; then
   apt-get --fix-broken --allow-remove-essential install
   apt-get install --allow-remove-essential $(grep :i386 original.dpkg | awk '{print $2}' | sed -e s/:i386//)
 fi

Thursday 13 July 2017

Crossgrading a more typical server in Debian9

First you need to install a 64bits kernel and boot with it. See my previous post on how to do it.

Second you need to do a bootstrap of crossgrading:

 apt-get clean
 apt-get upgrade
 apt-get --download-only install dpkg:amd64 tar:amd64 apt:amd64 bash:amd64 dash:amd64 init:amd64 mawk:amd64
 dpkg --install /var/cache/apt/archives/*_amd64.deb
 dpkg --install /var/cache/apt/archives/*_amd64.deb
 dpkg --print-architecture
 dpkg --print-foreign-architectures

Third, do a crossgrade of the libraries:

 dpkg --list > original.dpkg
 apt-get --fix-broken --allow-remove-essential install
 for pack32 in $(grep :i386 original.dpkg | awk '{print $2}' ) ; do 
   if dpkg --status $pack32 | grep -q "Multi-Arch: same" ; then 
     apt-get install --yes --allow-remove-essential ${pack32%:i386} ; 
   fi ; 
 done

Forth, do a full crossgrade:

 if ! apt-get install --allow-remove-essential $(grep :i386 original.dpkg | awk '{print $2}' | sed -e s/:i386//) ; then
   apt-get --fix-broken --allow-remove-essential install
   apt-get install --allow-remove-essential $(grep :i386 original.dpkg | awk '{print $2}' | sed -e s/:i386//)
 fi

Wednesday 12 July 2017

Crossgrading a minimal install of Debian 9

By testing the previous instructions for a full crosgrade I run into trouble. Here is the results of my tests to do a full crossgrade of a minimal installation of Debian inside a VM.

First you need to install a 64bits kernel and boot with it. See my previous post on how to do it.

Second you need to do a bootstrap of crossgrading:

 apt-get clean
 apt-get upgrade
 apt-get --download-only install dpkg:amd64 tar:amd64 apt:amd64 bash:amd64 dash:amd64 init:amd64
 dpkg --install /var/cache/apt/archives/*_amd64.deb
 dpkg --install /var/cache/apt/archives/*_amd64.deb
 dpkg --print-architecture
 dpkg --print-foreign-architectures
 apt-get --fix-broken --allow-remove-essential install

Third do a full crossgrade:

 apt-get install --allow-remove-essential $(dpkg --list | grep :i386 | awk '{print $2}' | sed -e s/:i386// )

This procedure seams to be a little fragile, but worked most of the time for me.

Crossgrading the kernel in Debian 9

I have a very old installation of 32bits Debian running in new hardware. Until now running a 64bits kernel was enough to use efficiently more than 4GiB of RAM. The only problem I found was the proprietary drivers from AMD/ATI and NVIDIA, that did not like this mixed environment and some problems with openafs, easilly solved with the help of the package maintainers of openafs. Crossgrading the Qemu/KVM to 64 bits did not pose a problem, so I have been running 64bits VMs for some time.

But now the nouveau driver do not work with my new display adapter and I need to run tools from OpsCode not available as 32bits. So is time to do a CrossGrade. Finding some problems I can not recommend it to the inexperienced people. Is time investigate the issues and report bugreports to Debian were appropriate.

If you run 32bits Debian installation you can easily install a 64bits kernel . The procedure is simple and well tested.

dpkg --add-architecture amd64
apt-get update
apt-get install linux-image-amd64:amd64

And reboot to test the new kernel.

You can expect here more articles about crossgrading.

Thursday 4 August 2011

Preview of xorp v1.8.3 in Debian

I attended DebConf11 and my main objective was to package xorp v1.8.3 for Debian. In the spirit of release early and release often here are the links for a package compiled for Debian v6.0 aka squeeze. The work is not finished and most important was not yet reviewed by a Debian Developer. Reports of success are important.

For downloading:

xorp_1.8.3-1_wip4_bpo60_1_i386.deb

xorp_1.8.3-1_wip4_bpo60_1_amd64.deb

For accessing the sources or using apt-get add the following lines to your /etc/apt/sources.list:

deb http://debian.tagus.ist.utl.pt/debian squeeze/UNRELEASED main contrib
deb-src  http://debian.tagus.ist.utl.pt/debian squeeze/UNRELEASED main contrib