[Bug 906722] Re: root partition is not being grown

[Scott Moser]

I've not yet confirmed, but looking at git commits to util-linux from 2.19.1 to 2.20.1 reveals this one:
https://github.com/karelzak/util-linux/commit/e82810c6cf3fe94d2cf70d485a59c411ccb601b3#fdisk/sfdisk.c

The disk is definitely busy when we try to rewrite the parttion table in the initramfs.
The reason it is not unmounted is get out in the common (other-than-first-boot) path when the disk is not going to be updated.

2 things to look at:
 - --no-reread flag
 - make growroot support writing "what would you do" output, which growroot in cloud-initramfs-tools would then use.
   if it said "nothing to do", then nothing done.  Otherwise it would unmount disk, do what would have been done and then continue on.

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https://bugs.launchpad.net/bugs/906722

Title:
  root partition is not being grown

Status in “cloud-initramfs-tools” package in Ubuntu:
  Confirmed
Status in “util-linux” package in Ubuntu:
  New

Bug description:
  Upon booting an openstack instance of precise-i386-20111219-failed-console.log, I found that the root filesystem had not been resized as it normally would have been.
  This occurred on both i386 and amd64.

  Kernel output contains something like:
  Begin: Running /scripts/local-bottom ... [    1.852884] FDC 0 is a S82078B
  [    1.862945] 8139cp 0000:00:03.0: eth0: RTL-8139C+ at 0xf840a000, 02:16:3e:21:8a:47, IRQ 11
  [    1.877189] 8139too: 8139too Fast Ethernet driver 0.9.28
  ***** WARNING: Resize failed, attempting to revert ******
  BLKRRPART: Device or resource busy
  The command to re-read the partition table failed.
  Run partprobe(8), kpartx(8) or reboot your system now,
  before using mkfs
  ***** Appears to have gone OK ****
  GROWROOT: FAILED: failed to resize
  Re-reading the partition table ...
  done.
  done.
  Begin: Running /scripts/init-bottom ... done.

  
  It should show something like:

  Begin: Running /scripts/local-bottom ... [    1.314676] 8139cp 0000:00:03.0: eth0: RTL-8139C+ at 0xf840a000, 02:16:3e:3e:94:65, IRQ 11
  [    1.320377] FDC 0 is a S82078B
  [    1.335493] 8139too: 8139too Fast Ethernet driver 0.9.28
  GROWROOT: CHANGED: partition=1 start=16065 old: size=4176900 end=4192965 new: size=20948760,end=20964825
  [    1.372287]  vda: vda1
  [    1.398773] EXT4-fs (vda1): mounted filesystem with ordered data mode. Opts: (null)
  done.
  done.
  Begin: Running /scripts/init-bottom ... done.

  This worked as recently as ubuntu-precise-daily-i386-server-20111213.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: cloud-initramfs-growroot 0.2ubuntu1
  ProcVersionSignature: User Name 3.2.0-5.11-virtual 3.2.0-rc5
  Uname: Linux 3.2.0-5-virtual x86_64
  ApportVersion: 1.90-0ubuntu1
  Architecture: amd64
  Date: Tue Dec 20 05:25:48 2011
  Ec2AMI: ami-0000011f
  Ec2AMIManifest: FIXME
  Ec2AvailabilityZone: nova
  Ec2InstanceType: m1.small
  Ec2Kernel: unavailable
  Ec2Ramdisk: unavailable
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: cloud-initramfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

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