[Bug 1586303] Re: clear_partitions doesn't clear /boot

[Brian Murray]

In the attached ubiquity upgrade log file we can see the following:

Apr 28 12:59:19 xubuntu kernel: [  821.820380] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
Apr 28 12:59:19 xubuntu clear_partitions: Removing bin from / (/dev/sda2).
Apr 28 12:59:19 xubuntu clear_partitions: Removing dev from / (/dev/sda2).
Apr 28 12:59:20 xubuntu clear_partitions: Removing etc from / (/dev/sda2).
Apr 28 12:59:21 xubuntu clear_partitions: Removing lib from / (/dev/sda2).
Apr 28 12:59:21 xubuntu clear_partitions: Removing lib64 from / (/dev/sda2).
Apr 28 12:59:21 xubuntu clear_partitions: Removing proc from / (/dev/sda2).
Apr 28 12:59:21 xubuntu clear_partitions: Removing sbin from / (/dev/sda2).
Apr 28 12:59:21 xubuntu clear_partitions: Removing sys from / (/dev/sda2).
Apr 28 12:59:21 xubuntu clear_partitions: Removing usr/bin from / (/dev/sda2).
Apr 28 12:59:21 xubuntu clear_partitions: Removing usr/games from / (/dev/sda2).
Apr 28 12:59:21 xubuntu clear_partitions: Removing usr/include from / (/dev/sda2).
Apr 28 12:59:23 xubuntu clear_partitions: Removing usr/lib from / (/dev/sda2).
Apr 28 12:59:23 xubuntu clear_partitions: Removing usr/sbin from / (/dev/sda2).
Apr 28 12:59:26 xubuntu ubiquity: WARNING: Unknown X keysym "permille"

** Summary changed:

- After upgrade from Xubuntu 15.10 to 16.04, old kenrels are on /boot but not shown by `dpkg -l`
+ clear_partitions doesn't clear /boot

** Package changed: dpkg (Ubuntu) => ubiquity (Ubuntu)

** Changed in: ubiquity (Ubuntu)
       Status: Incomplete => Confirmed

** Changed in: bikeshed (Ubuntu)
       Status: New => Invalid

** Changed in: byobu (Ubuntu)
       Status: New => Invalid

** Changed in: ubiquity (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1586303

Title:
  clear_partitions doesn't clear /boot

Status in bikeshed package in Ubuntu:
  Invalid
Status in byobu package in Ubuntu:
  Invalid
Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  Illustrated in shell:

  $ ls -l /boot/vmlinuz-*
  -rw------- 1 root root 6808720 helmi 26 05:17 /boot/vmlinuz-4.2.0-30-generic
  -rw------- 1 root root 6808528 maali 11 02:11 /boot/vmlinuz-4.2.0-34-generic
  -rw------- 1 root root 6829104 maali 16 02:45 /boot/vmlinuz-4.2.0-35-generic
  -rw-r--r-- 1 root root 7013984 huhti 28 16:03 /boot/vmlinuz-4.4.0-21-generic
  -rw------- 1 root root 7015440 touko 13 02:55 /boot/vmlinuz-4.4.0-22-generic
  $ linux-version list
  4.2.0-30-generic
  4.2.0-34-generic
  4.2.0-35-generic
  4.4.0-21-generic
  4.4.0-22-generic
  $ dpkg -l linux-image-4'*' |grep .
  Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
  ||/ Name                         Version      Architecture Description
  +++-============================-============-============-======================================================
  ii  linux-image-4.4.0-21-generic 4.4.0-21.37  amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP
  ii  linux-image-4.4.0-22-generic 4.4.0-22.40  amd64        Linux kernel image for version 4.4.0 on 64 bit x86 SMP

  Workaround; How to remove the kernels:
  http://askubuntu.com/q/779031/21005

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: dpkg 1.18.4ubuntu1.1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Fri May 27 11:31:51 2016
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2016-04-28 (28 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  SourcePackage: dpkg
  UpgradeStatus: No upgrade log present (probably fresh install)

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