[Bug 1615021] Re: Unable to network boot Ubuntu 16.04 installer normally on Briggs

[Martin Pitt]

Thanks for the followup. Closing the debian-installer part now. The work
on the Debian side wrt. multiplexing the installer UI to mutiple
consoles sounds interesting, but I don't think we should houd our breath
for it -- I think this is going to be tricky given how different the
capabilities of VT and serial consoles are wrt. geometry, colors,
special chars, etc.

** Changed in: debian-installer (Ubuntu Yakkety)
   Status: Triaged => Invalid

** Changed in: debian-installer (Ubuntu Xenial)
   Status: Triaged => Invalid

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Title:
  Unable to network boot Ubuntu 16.04 installer normally on Briggs

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[Bug 1615021] Re: Unable to network boot Ubuntu 16.04 installer normally on Briggs

[Launchpad Bug Tracker]

This bug was fixed in the package systemd - 229-4ubuntu8

---
systemd (229-4ubuntu8) xenial-proposed; urgency=medium

  * Queue loading transient units after setting their properties. Fixes
starting VMs with libvirt. (LP: #1529079)
  * Connect pid1's stdin/out/err fds to /dev/null also for containers. This
fixes generators which expect a valid stdout/err fd in some container
technologies. (LP: #1608953)
  * 73-usb-net-by-mac.rules: Do not run readlink for *every* uevent, and
merely check if /etc/udev/rules.d/80-net-setup-link.rules exists.
A common way to disable an udev rule is to just "touch" it in
/etc/udev/rule.d/ (i. e. empty file), and if the rule is customized we
cannot really predict anyway if the user wants MAC-based USB net names or
not. (LP: #1615021)
  * systemd-networkd-resolvconf-update.service: Also pick up DNS servers from
individual link leases, as they sometimes don't appear in the global
ifstate. (LP: #1620559)

 -- Martin Pitt   Tue, 06 Sep 2016 14:16:29
+0200

** Changed in: systemd (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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Title:
  Unable to network boot Ubuntu 16.04 installer normally on Briggs

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[Bug 1615021] Re: Unable to network boot Ubuntu 16.04 installer normally on Briggs

[Launchpad Bug Tracker]

This bug was fixed in the package systemd - 231-5

---
systemd (231-5) unstable; urgency=medium

  [ Iain Lane ]
  * Let graphical-session-pre.target be manually started (LP: #1615341)

  [ Felipe Sateler ]
  * Add basic version of git-cherry-pick
  * Replace Revert-units-add-a-basic-SystemCallFilter-3471.patch with upstream
patch
  * sysv-generator: better error reporting. (Closes: #830257)

  [ Martin Pitt ]
  * 73-usb-net-by-mac.rules: Test for disabling 80-net-setup-link.rules more
efficiently. Stop calling readlink at all and just test if
/etc/udev/rules.d/80-net-setup-link.rules exists -- a common way to
disable an udev rule is to just "touch" it in /etc/udev/rule.d/ (i. e.
empty file), and if the rule is customized we cannot really predict anyway
if the user wants MAC-based USB net names or not. (LP: #1615021)
  * Ship kernel-install (Closes: #744301)
  * Add debian/extra/kernel-install.d/60-initrd.install.
This kernel-install drop-in copies the initrd of the selected kernel to
the EFI partition.
  * bootctl: Automatically detect ESP partition.
This makes bootctl work with Debian's /boot/efi/ mountpoint without having
to explicitly specify --path.
Patches cherry-picked from upstream master.
  * systemd.NEWS: Point out that alternatively rcS scripts can be moved to
rc[2-5]. Thanks to Petter Reinholdtsen for the suggestion!

  [ Michael Biebl ]
  * Enable iptables support (Closes: #787480)
  * Revert "logind: really handle *KeyIgnoreInhibited options in logind.conf"
The special 'key handling' inhibitors should always work regardless of
any *IgnoreInhibited settings – otherwise they're nearly useless.
Update man pages to clarify that *KeyIgnoreInhibited only apply to a
subset of locks (Closes: #834148)

 -- Martin Pitt   Fri, 26 Aug 2016 10:58:07 +0200

** Changed in: systemd (Ubuntu Yakkety)
   Status: Fix Committed => Fix Released

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Title:
  Unable to network boot Ubuntu 16.04 installer normally on Briggs

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[Bug 1615021] Re: Unable to network boot Ubuntu 16.04 installer normally on Briggs

[Launchpad Bug Tracker]

This bug was fixed in the package busybox - 1:1.22.0-19ubuntu2

---
busybox (1:1.22.0-19ubuntu2) yakkety; urgency=medium

  * debian/patches/readlink-in-slash-bin.patch: put readlink in /bin/
like coreutils.  Closes LP: #1615021.

 -- Steve Langasek   Tue, 23 Aug 2016
12:36:39 -0700

** Changed in: busybox (Ubuntu Yakkety)
   Status: Fix Committed => Fix Released

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Title:
  Unable to network boot Ubuntu 16.04 installer normally on Briggs

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[Bug 1615021] Re: Unable to network boot Ubuntu 16.04 installer normally on Briggs

[Steve Langasek]

I've thought about this some more, and while the /bin/readlink
/usr/bin/readlink in busybox is a bug, fixing this is definitely not
going to fix the problem in the installer.  In the installer,
/etc/udev/rules.d/80-net-setup-link.rules will never exist since this is
an admin override; so the readlink command - if it existed - would still
return false.  I'm reasonably sure the lack of /bin/readlink is not
causing the udev rule to behave differently; so it's sufficient to fix
this particular issue for 16.10 and later and not SRU it.

What is *more* of an issue is that the structure of /lib/udev/rules.d/73
-usb-net-by-mac.rules causes a separate call out to readlink for every
single udev event, because the readlink check happens *before* checking
the ACTION/SUBSYSTEM/SUBSYSTEMS attributes of the event, unless
net.ifnames=0 is set.

So regardless of whether this is the root cause of the install failure,
this udev rule is causing hundreds of thousands of extra calls out to
/bin/readlink on boot, which should definitely be fixed by reordering
these checks.

Martin, can you please look into fixing this for xenial+yakkety?

** Changed in: systemd (Ubuntu)
   Status: New => Triaged

** Changed in: systemd (Ubuntu)
 Assignee: (unassigned) => Martin Pitt (pitti)

** Also affects: debian-installer (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Also affects: busybox (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Also affects: systemd (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Also affects: debian-installer (Ubuntu Yakkety)
   Importance: Undecided
 Assignee: Taco Screen team (taco-screen-team)
   Status: Confirmed

** Also affects: busybox (Ubuntu Yakkety)
   Importance: Undecided
   Status: New

** Also affects: systemd (Ubuntu Yakkety)
   Importance: Undecided
 Assignee: Martin Pitt (pitti)
   Status: Triaged

** Changed in: busybox (Ubuntu Xenial)
   Status: New => Won't Fix

** Changed in: busybox (Ubuntu Yakkety)
   Status: New => Fix Committed

** Changed in: debian-installer (Ubuntu Xenial)
   Status: New => Triaged

** Changed in: debian-installer (Ubuntu Yakkety)
   Status: Confirmed => Triaged

** Changed in: systemd (Ubuntu Xenial)
   Status: New => Triaged

** Changed in: systemd (Ubuntu Xenial)
 Assignee: (unassigned) => Martin Pitt (pitti)

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Title:
  Unable to network boot Ubuntu 16.04 installer normally on Briggs

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[Bug 1615021] Re: Unable to network boot Ubuntu 16.04 installer normally on Briggs

[Steve Langasek]

** Also affects: systemd (Ubuntu)
   Importance: Undecided
   Status: New

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Title:
  Unable to network boot Ubuntu 16.04 installer normally on Briggs

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[Bug 1615021] Re: Unable to network boot Ubuntu 16.04 installer normally on Briggs

[Steve Langasek]

Examining the initrd shows that readlink is provided as
/usr/bin/readlink -> /bin/busybox, not as /bin/readlink where systemd
expects it (and where it's shipped on an installed system).  This is a
bug in debian-installer's construction of that image - though gee it
would be nice if systemd didn't require hard-coded paths to everything.

There's no guarantee that fixing the bug that's causing this error
message will fix the underlying problem preventing your boot, but it
will at least fix the message spam.

** Package changed: systemd (Ubuntu) => debian-installer (Ubuntu)

** Also affects: busybox (Ubuntu)
   Importance: Undecided
   Status: New

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Title:
  Unable to network boot Ubuntu 16.04 installer normally on Briggs

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