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Bug 751337 - btrfstune in btrfs-progs 4.1 supports changing the file system UUID
btrfstune in btrfs-progs 4.1 supports changing the file system UUID
Status: RESOLVED FIXED
Product: gparted
Classification: Other
Component: application
GIT HEAD
Other Linux
: Normal normal
: ---
Assigned To: gparted maintainers alias
gparted maintainers alias
Depends on:
Blocks:
 
 
Reported: 2015-06-22 16:59 UTC by Mike Fleetwood
Modified: 2015-08-03 17:31 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
Support changing the UUID of a btrfs file system (v1) (2.49 KB, patch)
2015-06-22 17:34 UTC, Mike Fleetwood 		none Details | Review

Description Mike Fleetwood 2015-06-22 16:59:15 UTC 
Latest release of btrfs-progs released today adds support for changing
the file system UUID.
    http://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg44182.html
Relevant changes:
      btrfs-progs: btrfstune: rework change_uuid
      btrfs-progs: btrfstune: add ability to restore unfinished fsid change
      btrfs-progs: btrfstune: add '-U' and '-u' option to change fsid
      btrfs-progs: Documentation: uuid change

Patch supporting this in GParted to follow shortly.
Comment 1 Mike Fleetwood 2015-06-22 17:34:13 UTC 
Created attachment 305845 [details] [review]
Support changing the UUID of a btrfs file system (v1)

Hi Curtis,

Here's the patch for this.

To get and build btrfs-progs 4.1 I did the following:

wget https://www.kernel.org/pub/linux/kernel/people/kdave/btrfs-progs/btrfs-progs-v4.1.tar.gz
tar xf btrfs-progs-v4.1.tar.gz
cd btrfs-progs-v4.1
./configure && make

On Fedora 22 I needed these extra packages for ./configure to succeed:
    e2fsprogs-devel libblkid-devel lzo-devel asciidoc xmlto

On Xubuntu 14.04 LTS I needed these extra packages:
    e2fslibs-dev liblzo2-dev asciidoc

I then manually copied btrfstune to /sbin.

Thanks,
Mike
Comment 2 Curtis Gedak 2015-06-28 17:13:49 UTC 
Thank you Mike for this btrfs set uuid enhancement patch, and for the instructions outlining how to test the patch.

The code looks good to me, and my testing using your instructions shows patch v1 in comment #1 works.  The code also works as expected on my older kubuntu 12.04 distro.

The patch in comment #1 has been committed to the git repository for inclusion in the next release of GParted.

The relevant git commit can be viewed at the following link:

Support changing the UUID of a btrfs file system (#751337)
https://git.gnome.org/browse/gparted/commit/?id=8308ee6051b329284cd16ae66ad37699c4b7130b
Comment 3 Curtis Gedak 2015-08-03 17:31:57 UTC 
This enhancement was included in the GParted 0.23.0 release on August 3, 2015.