[Bug 737387] Re: gparted should offer option to change UUID when copying partition

[André Pirard]

As changing the UUID of a partition also implies to change the
references to it, for example in fstab, I opened Bug #996443 suggesting
that UUID=0 meant "the UUID of the partition this reference is in",
"this partition, "myself", solving 90%+ of such cases.

I think that the effects of not changing the UUID during a copy are just
to obscure, that changing it should be the default, changeable option
but that the user should be warned by a dialog that can be easily
disabled.

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Title:
  gparted should offer option to change UUID when copying partition

Status in Gnome Partition Editor:
  Confirmed
Status in “gparted” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: gparted

  A system with two physical disks (sda, sdb), each with valid UUID.

  Problem:   
  Gparted overwrites a valid UUID on destination disk if partition is copied using Gparted.  Result is two partitions with same UUID i.e. "Unique Identifier" is no more unique.  That will result in some other problems which show up like described in bug report # 579703 for example.

  Further details:
  Gparted version is 0.7.    Steps I did:  Ubuntu 10.10 system partition (/) on disk "sda" was getting fulll and I added another physical disk "sdb" which was before  used in another Ubuntu installation with valid partition.  "sdb" was working ok after boot.  Decided to copy Ubuntu system partition from "sda" to "sdb" and modify boot to use "sdb" for Ubuntu since there is enough space.  Idea did not succeed since Gparted had overwritten original UUID on disk "sdb" i.e. there are now two partitions on different disks with same UUID.  Please see this printout fron "sudo blkid":

  /dev/sda1: LABEL="C_DRIVE" UUID="F614D11C14D0E0A3" TYPE="ntfs" 
  /dev/sda2: UUID="33111f1c-9438-4b9b-a61d-015ab998224c" TYPE="swap" 
  /dev/sda3: LABEL="10.10-root" UUID="144ec3ef-55a7-4ede-a2ef-3f284abbf680" TYPE="ext3" 
  /dev/sda4: LABEL="10.10-home" UUID="5589dba1-5f3b-4581-b24a-8ba4b3a86c50" TYPE="ext3" 
  /dev/sdb1: LABEL="10.10-root" UUID="144ec3ef-55a7-4ede-a2ef-3f284abbf680" TYPE="ext3"

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