[Bug 1680597] Re: udev 60-block.rules does not watch bcache

[Dan Streetman]

** Changed in: systemd (Ubuntu)
       Status: Confirmed => Won't Fix

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Title:
  udev 60-block.rules does not watch bcache

Status in systemd package in Ubuntu:
  Won't Fix

Bug description:
  bcache devices do not have a watch on them from /lib/udev/rules.d/60-block.rules
  The result is that this will fail:

    mkfs.ext4 /dev/bcache0 -L  foobar
    udevadm settle
    ls -l /dev/disk/by-label/foobar

  where as it will work on
    mkfs.ext4 /dev/vdb -L foobar
    udevadm settle
    ls -l /dev/disk/by-label/foobar

  We found this when chasing a curtin bug (bug 1680591).  The result of it was that
  we were installing and an update-grub would choose to boot with root=/dev/bcache0 
  rather than UUID=.

  
  Related bugs:
   * bug 1680591:  installed system boots with root=/dev/bcache0 rather than root=UUID when root is bcache

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: udev 232-19
  ProcVersionSignature: Ubuntu 4.9.0-15.16-generic 4.9.5
  Uname: Linux 4.9.0-15-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
  ApportVersion: 2.20.4-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity:Unity7
  Date: Thu Apr  6 16:28:59 2017
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-07-23 (623 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150722.1)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.9.0-15-generic.efi.signed root=UUID=f897b32a-eacf-4191-9717-844918947069 ro quiet splash
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.vendor: Intel Corporation

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