#ubuntu-s390x 2016-03-18
<moon127> test
<cpaelzer> moon127: working :-)
<xnox> hello everyone!
<xnox> Welcome to #ubuntu-s390x. This channel is publicly cisneroselizabeth@example.net. Use of this channel implies acceptance of the terms at https://wiki.ubuntu.com/IRC/TermsOfService
 * andymaier is back (gone 00:01:41)
 * andymaier is away: I'm away, not watching this cannel right now.
 * andymaier is back (gone 00:00:10)
#ubuntu-s390x 2016-03-24
<dannf> is there a way to return a dasd disk to unformatted state?
#ubuntu-s390x 2016-03-25
<dannf> nm, figured it out. interrupt a format.
#ubuntu-s390x 2016-03-31
* ChanServ changed the topic of #ubuntu-s390x to: Ubuntu for IBM LinuxONE and z Systems | Public mailing list at https://launchpad.net/~ubuntu-s390x | Wiki https://wiki.ubuntu.com/S390X
<dave__> Hello
<dave__> Hello, Dimitri
<xnox> dave__, hello =)
<dave__> Thanks for the note about the availability of the beta...I am anxious  to get it installed here.
#ubuntu-s390x 2018-03-28
<joelkraehemann> hi all
<joelkraehemann> I try to setup a s390x VM
<joelkraehemann> but I don't get a screen
<jfh> joelkraehemann: are you trying a z/VM guest installation? what is the hw you are running?
<joelkraehemann> jfh: I do it using qemu
<joelkraehemann> on debian
<joelkraehemann> qemu-system-s390x -M s390-ccw-virtio -hda ./ubuntu.qcow -cdrom ./ubuntu-17.10-server-s390x.iso -boot d -m 512
<jfh> joelkraehemann: do you know if qemu on debian is emulating generation EC12 or higher? Because Ubuntu is compiled for EC12 or higher ...
<xnox> joelkraehemann, what is your mainframe level? Ubuntu only supports zEC12
<xnox> joelkraehemann, also you cannot use '-cdrom' option to qemu-system-s390x, it has to be a 'virtio iscsi drive' -> yes it is an iso, but that's how they boot it with qemu-system-s390x.
<xnox> and thus specify that one, as the first hard drive.
<xnox> joelkraehemann, -m 512 might be too small
<xnox> joelkraehemann, you probably need -enable-kvm too
<joelkraehemann> https://github.com/qemu/qemu/blob/master/pc-bios/s390-ccw.img
<joelkraehemann> ^^ I had to copy this file
<jfh> joelkraehemann: that's just one aspect - the other is that EC12 instructions are needed (for Ubuntu)
<joelkraehemann> no idea :/
<jfh> well, you may just try to run Debian - to verify if it works in general ... (can't say out of my head if qemu in Debian comes with EC12 support ...)
<joelkraehemann> does it help install ubuntu on my notebook?
<joelkraehemann> well the same on my laptop s390x won't start
<xnox> joelkraehemann, i believe you need hardware KVM accelration, as in qemu-system-s390x cannot emulate zEC12 instruction set on non zEC12+ mainframe hardware. I do not believe you can run s390x Ubuntu qemu guests, on e.g. Intel laptop.
<xnox> joelkraehemann, what are you trying to do?
<xnox> joelkraehemann, can you simply use Launchpad PPA?
<joelkraehemann> I think PPA doesn't support s390x
<joelkraehemann> and I need a interactive debug session
<borntraeger> xnox, joelkraehemann when you use a qemu from git, this seems to work with code compiled for zEC12
<xnox> joelkraehemann, PPAs do support s390x, you simply need to check the tickbox in the PPA settings page.
<xnox> joelkraehemann, what would you like to debug? can it be scripted, to dump tracebacks in the build log?
<xnox> (it's there, simply not enabled by default - one can enable full set of supported architecutres in any ppa, e.g. arm64 armhf amd64 i386 ppc64el s390x)
<jfh> joelkraehemann: alternatively you may also go for a KVM VM at IBM's LinuxONE Community Cloud at Marist (no-charge)
#ubuntu-s390x 2018-03-29
<joelkraehemann> jfh: but there is no ubuntu on LinuxONE Community Cloud
<pppingme> joelkraehemann https://developer.ibm.com/linuxone/home-ubuntu/
<joelkraehemann> pppingme, thank you
<joelkraehemann> I was able to track down the problem using SLES 12.3
<jfh1> joelkraehemann: SLES is compiled for older s390x generations - that may work ... (sorry missed your question on L1CC)
<joelkraehemann> jfh1: I was able to reproduce
<joelkraehemann> for short, I have 2 versions one working the other not
<joelkraehemann> the ubuntu version is not working
<joelkraehemann> further I just looked at the diff and there is actually a problem with the ubuntu version
<joelkraehemann> http://codepad.org/mKZ5c5dA
<joelkraehemann> ^^ the stack-trace of the crash
<joelkraehemann> http://codepad.org/1pUsFFpl
<joelkraehemann> ^^ I think this diff snipped is the root cause
<xnox> joelkraehemann, if these are ubuntu binaries, you should enable dbgsyms repository and install debug symbols to see more info
<joelkraehemann> I compiled from source :)
<xnox> joelkraehemann, note Desktop is not supported on s390x on Ubuntu; despite just being a test case binary....
<joelkraehemann> well I was able to run the tests with X11Forwarding
<xnox> joelkraehemann, sure, but you want debug symbols for the shared libraries you did not compile. e.g. #36 0x000003fffc294082 in  () at /usr/lib64/libgobject-2.0.so.0
<xnox> etc.
<xnox> and so on, no?
<joelkraehemann> xnox: the crash was introduced while the critical warning
<joelkraehemann> I am thinking of a memory corruption
<joelkraehemann> here, you need to use your brain ;)
<xnox> yeah, annoying
#ubuntu-s390x 2018-03-30
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{'channel': 'ubuntu-s390x', 'month': 3}