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[Launchpad Bug Tracker <2056187@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package initramfs-tools - 0.136ubuntu6.8

---------------
initramfs-tools (0.136ubuntu6.8) focal; urgency=medium

  * Fix configuring BOOTIF when using iSCSI (LP: #2056187)
  * Port the net autopkgtest to the common test framework. This drops
    depending on downloading a cloud image from the Internet and reduces
    the execution time from 3:19 min down to 0:57 min. Also backport
    autopkgtest improvements from version 0.142ubuntu23 to run the
    test on all architectures and to check more results from qemu-net.

 -- Benjamin Drung <bdrung@xxxxxxxxxx>  Tue, 19 Mar 2024 13:12:51 +0100

** Changed in: initramfs-tools (Ubuntu Focal)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2056187

Title:
  fails to configure BOOTIF when using iscsi

Status in initramfs-tools package in Ubuntu:
  Fix Released
Status in open-iscsi package in Ubuntu:
  Invalid
Status in initramfs-tools source package in Focal:
  Fix Released
Status in open-iscsi source package in Focal:
  New
Status in initramfs-tools source package in Jammy:
  Fix Released
Status in open-iscsi source package in Jammy:
  New

Bug description:
  [ Impact ]

   * MAAS cannot PXE-boot a machine that has iSCSI disks

   * Focal is the default Ubuntu distribution deployed by MAAS, so we should
     back-port this to ensure it works out-of-the-box.

  [ Test Plan ]

   * reproducing this issue requires a machine with iSCSI disks (Cisco UCS Manager
   in the original report), and a MAAS controller (3.4 or better)

   * the issue can be observed by simply enlisting the machine in MAAS. It will
   fail to boot due to the missing BOOTIF configuration.

  [ Where problems could occur ]

   * the problematic code was an attempt to fix LP#2037202, so we should watch out
   for regressions.

  [ Original report ]

  we have a bad interaction between initramfs-tools and open-iscsi,
  resulting in the boot interface not being configured.

  when the iscsi has a static address, the script `local-top/iscsi` from
  open-iscsi creates a /run/net-$DEVICE.conf file for the iscsi
  interface. The existence of this file makes configure_networking()
  skip configuring the BOOTIF later due to this code in
  `scripts/functions`:

          for x in /run/net-"${DEVICE}".conf /run/net-*.conf ; do
              if [ -e "$x" ]; then
                  IP=done
                  break
              fi
          done

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