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[Bug 1531404] Re: nonexistent partition in /dev, & lsblk/disk util misbehaving with randomized disks

 

Did you reboot after filling the drive with random data?  Also please
run sudo blkid -p /dev/sda ( or whichever disk is effected ) and post
the output.


** Changed in: util-linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1531404

Title:
  nonexistent partition in /dev, & lsblk/disk util misbehaving with
  randomized disks

Status in util-linux package in Ubuntu:
  Incomplete

Bug description:
  I have two 2T disks with no partition table and which have been filled
  with random data.  GNU parted shows nothing on this disk:

  GNU Parted 3.2
  Using /dev/sda
  Welcome to GNU Parted! Type 'help' to view a list of commands.
  (parted) print
  Error: /dev/sda: unrecognised disk label
  Model: ATA WDC WD2002FAEX-0 (scsi)
  Disk /dev/sda: 2000GB
  Sector size (logical/physical): 512B/512B
  Partition Table: unknown
  Disk Flags:

  but when I check with `lsblk`, I see one disk with partitions and the
  other without:

  Code:
  NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
  sda 8:0 0 1.8T 0 disk
  └─sda2 8:2 0 1.6T 0 part

  NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
  sdb 8:16 0 1.8T 0 disk

  and the Disks utility agrees (see: http://ibin.co/2SQv4KbH06Mz).

  Also, /dev/disk/by-id contains an entry pointing to sda and one
  pointing to sda2. So it really does think there's a second partition
  there.

  Thinking there was something wrong, I re-filled the disks with random
  data.  Now sda is properly (in the Disks utility as just an "unknown
  disk"), but sdb shows a second partition, and identically to how sda
  was showing it before (ie the Disks utility output is the same with
  181GB at the beginning and 128GB at the end).

  I am running all this from the Ubuntu Gnome 15.10 installer disk.
  --- 
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 15.10
  InstallationDate: Installed on 2015-08-31 (130 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
  Package: util-linux 2.26.2-6ubuntu3
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
  Tags:  wily
  Uname: Linux 4.2.0-23-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True

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