[Bug 1447600] Re: 15.04 installer hangs in partitioner during something else

[Uwe Geuder]

I get also bitten by this problem when trying to install ubuntu-15.04
-server-amd64.iso in a virtual machine.

If I select LVM the installation hangs when it tries to format /boot as
ext2

If I select full disk without LVM the installation hangs when it tries
to format / (rootfs) as ext4

I can change to a busy box shell in virtual console 2. Command apport-
collect is not in the path.

I checked dmesg but did not see anything bad.

Looking at the output of "ps" shows that the mkfs.ext4 is hanging
(status sleeping). Obviously the installer cannot do very much if
mkfs.ext4 never completes.

strace does not seem to be available in this environment, so I am a bit
out of ideas how to debug where the mkfs.ext4 hangs.

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Title:
  15.04 installer hangs in partitioner during something else

Status in ubiquity package in Ubuntu:
  Triaged

Bug description:
  In both Ubuntu and Lubuntu 15.04, when performing a "Something Else"
  install, the installer hangs when trying to format /.

  I was trying a Something Else install on 32 bit.  I asked to format
  sda1 as ext4 and mount at /.  I asked to not format sda3 and mount at
  /home.  I asked to use sda5 as swap.  Installer just stopped with no
  hard drive or CD activity.  No formatting was performed.

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