[Bug 829238] Re: natty-server-cloudimg-amd64 throws errors when using a ramdisk

[Juerg Haefliger]

** Changed in: udev (Ubuntu)
       Status: New => Invalid

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Title:
  natty-server-cloudimg-amd64 throws errors when using a ramdisk

Status in udev package in Ubuntu:
  Invalid

Bug description:
  I pulled natty-server-cloudimg-amd64.tar.gz, extracted the archive and
  then extracted the initrd from the image file. I then registered the
  three files (image, kernel, ramdisk) with Nova (2011.2-0ubuntu1) and
  launched an instance. The console log threw the following errors:

  [    0.451453] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
  [    0.452486] EDD information not available.
  [    0.603144] Freeing unused kernel memory: 880k freed
  [    0.605273] Write protecting the kernel read-only data: 10240k
  [    0.607776] Freeing unused kernel memory: 84k freed
  [    0.613642] Freeing unused kernel memory: 1412k freed
  Loading, please wait...
  Begin: Loading essential drivers ... done.
  [    0.628690] <30>udev[61]: starting version 167
  Begin: Running /scripts/init-premount ... done.
  Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done.
  Begin: Running /scripts/local-premount ... done.
  [    0.705857] 8139cp: 8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
  [    0.707364] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11
  [    0.708441] 8139cp 0000:00:03.0: PCI INT A -> Link[LNKC] -> GSI 11 (level, high) -> IRQ 11
  [    0.712465] 8139cp 0000:00:03.0: eth0: RTL-8139C+ at 0xffffc90000312000, 02:16:3e:04:33:2e, IRQ 11
  [    0.714835] EXT4-fs (vda): mounted filesystem with ordered data mode. Opts: (null)
  Begin: Running /scripts/local-bottom ... done.
  done.
  Begin: Running /scripts/init-bottom ... done.
  udevd[61]: worker [104] did not accept message -1 (Connection refused), kill it

  udevd[61]: worker [108] did not accept message -1 (Connection
  refused), kill it

  udevd[61]: worker [109] did not accept message -1 (Connection
  refused), kill it

  udevd[61]: worker [110] did not accept message -1 (Connection refused), kill it
  udevd-work[183]: open /dev/null failed: No such file or directory

  udevd-work[181]: open /dev/null failed: No such file or directory

  
  Sometimes the instance would continue to successfully boot, sometimes it would hang at this point. The problem seems to be with the init-bottom script and specifically with the killing of udevd. Seems to be a timing issue since adding a simple sleep 1 before init-bottom is called 'fixes' the problem. Adding 'udevadm settle' in init-bottom right before the udev daemon is killed also seems to work. I suspect that the network events are lost due to the killed udev daemon and that somehow has a negative impact on the system.

  Log with 'udevadm settle':

  [    0.312257] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
  [    0.312917] EDD information not available.
  [    0.461766] Freeing unused kernel memory: 880k freed
  [    0.462825] Write protecting the kernel read-only data: 10240k
  [    0.463993] Freeing unused kernel memory: 84k freed
  [    0.468530] Freeing unused kernel memory: 1412k freed
  Loading, please wait...
  Begin: Loading essential drivers ... done.
  [    0.489270] <30>udev[61]: starting version 167
  Begin: Running /scripts/init-premount ... done.
  Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done.
  Begin: Running /scripts/local-premount ... done.
  [    0.569248] EXT4-fs (vda): mounted filesystem with ordered data mode. Opts: (null)
  Begin: Running /scripts/local-bottom ... [    0.577919] 8139cp: 8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
  [    0.578770] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11
  [    0.579415] 8139cp 0000:00:03.0: PCI INT A -> Link[LNKC] -> GSI 11 (level, high) -> IRQ 11
  [    0.582447] 8139cp 0000:00:03.0: eth0: RTL-8139C+ at 0xffffc90000312000, 02:16:3e:3b:6b:0b, IRQ 11
  done.
  done.
  Begin: Running /scripts/init-bottom ... [    0.633503] 8139too: 8139too Fast Ethernet driver 0.9.28
  [    0.644085] FDC 0 is a S82078B
  done.

  
  No errors and the instance boots up fine.

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