| 2015-10-30 22:58:50 |
MegaBrutal |
description |
When I try to upgrade from 15.10 Wily to 16.04 Xenial (actual development version) within an LXC container, the upgrade script hangs at the message „Calculating the changes”.
Steps to reproduce:
1. Make an LXC container with Wily (quickest option is to use lxc-create -t download, choose ubuntu, wily, amd64/i386).
2. Boot up the container, log in, „apt-get -y install ubuntu-release-upgrader”.
3. Start the upgrade with „do-release-upgrade -d”.
You will see that the upgrade process will hang at the message „Calculating the changes”.
The process which hangs: „/usr/bin/python3 /tmp/ubuntu-release-upgrader-1mpotr5d/xenial --mode=server --frontend=DistUpgradeViewText --devel-release”
With strace, it is revealed that the process hangs at a „futex” system call:
futex(0x7f4190000c10, FUTEX_WAIT_PRIVATE, 0, NULL
This system call never returns, the process must be interrupted with CTRL-C or kill.
Upgrading to any previous release within an LXC container works without problems, therefore I consider it as a regression. |
When I try to upgrade from 15.10 Wily to 16.04 Xenial (actual development version) within an LXC container, the upgrade script hangs at the message „Calculating the changes”.
Steps to reproduce:
1. Make an LXC container with Wily (quickest option is to use lxc-create -t download, choose ubuntu, wily, amd64/i386).
2. Boot up the container, log in, „apt-get -y install ubuntu-release-upgrader-core”.
3. Start the upgrade with „do-release-upgrade -d”.
You will see that the upgrade process will hang at the message „Calculating the changes”.
The process which hangs: „/usr/bin/python3 /tmp/ubuntu-release-upgrader-1mpotr5d/xenial --mode=server --frontend=DistUpgradeViewText --devel-release”
With strace, it is revealed that the process hangs at a „futex” system call:
futex(0x7f4190000c10, FUTEX_WAIT_PRIVATE, 0, NULL
This system call never returns, the process must be interrupted with CTRL-C or kill.
Upgrading to any previous release within an LXC container works without problems, therefore I consider it as a regression. |
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