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

[Steve Langasek]

Right, the change in behavior is due to commit
e82810c6cf3fe94d2cf70d485a59c411ccb601b3 upstream; prior to this, sfdisk
evidently was *never* noticing a failure of the partition rereading.
And '--no-reread' is only defined to suppress checking if the disk is in
use, it says nothing about suppressing the attempt to force a reread of
the partition table afterwards.

Likewise, --force is defined as disabling consistency checking, allowing
you to override problems that sfdisk would normally complain about and
continue with an operation that it considers unsafe.  In this case, the
failed ioctl doesn't prevent sfdisk from making any changes, it *only*
impacts the error code from sfdisk at the end.

So I think the behavior of 2.20 is consistent and should not be changed,
even though the behavior differed in the past.

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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:
  Fix Released
Status in “util-linux” package in Ubuntu:
  Invalid

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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