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

[Scott Moser]

I'll fix this in cloud-initramfs-tools because its just cleaner to do
there.  I was calling growpart while the disk was mounted simply to
optimize the case where there was a change to be made (which happens
only the first boot, really).

Instead, I'm just going to call growpart once with '--debug' and if it would not make a change, then exit as before.
If it *would* make a change, then unmount / and call it again to make the change.


 but there are some issues with sfdisk, and the update made it worse.
 * --no-reread option exists in older versions of util-linux (at least in 2.19)
 * --no-reread and --force with a mounted filesystem still exits failure in 2.20, it did not in 2.19


Partition is mounted and disk not resized (system booted) at this point.

$ growpart /dev/vda 1 --dry-run 2>out
CHANGE: partition=1 start=16065 old: size=4176900 end=4192965 new: size=20948760,end=20964825
$ sed -n '/new sfdisk/,$p' err > new
$ cat new
# === new sfdisk -d ===
# partition table of /dev/vda
unit: sectors

/dev/vda1 : start=    16065, size=  20948760, Id=83, bootable
/dev/vda2 : start=        0, size=        0, Id= 0
/dev/vda3 : start=        0, size=        0, Id= 0
/dev/vda4 : start=        0, size=        0, Id= 0

$ sudo sfdisk /dev/vda --force --no-reread < new; echo $?
....
Successfully wrote the new partition table
Re-reading the partition table ...
BLKRRPART: Device or resource busy
...
1

Previously if we did --force it would exit success (i guess in all
cases).

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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:
  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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