[Bug 1869281] [NEW] btrfs-convert of ext4 yields unmountable FS

[Paul Collins]

Public bug reported:

This is with btrfs-progs 5.4.1-2 in focal.  Similar result with
5.2.1-1ubuntu1 in eoan.

Following conversion, both mount and btrfs check report an extent that
reached beyond the end of the device:

ERROR: dev extent devid 1 physical offset 126701535232 len 33554432 is
beyond device boudnary 126726701056

I was doing this booted from a live USB image, so I only have pictures
of the screen, which I will attach.

I used -d to speed up creation of the ext2 image, but it also happens
without -d.

** Affects: btrfs-progs (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "IMG_3182.jpg"
   https://bugs.launchpad.net/bugs/1869281/+attachment/5341940/+files/IMG_3182.jpg

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to btrfs-progs in Ubuntu.
https://bugs.launchpad.net/bugs/1869281

Title:
  btrfs-convert of ext4 yields unmountable FS

Status in btrfs-progs package in Ubuntu:
  New

Bug description:
  This is with btrfs-progs 5.4.1-2 in focal.  Similar result with
  5.2.1-1ubuntu1 in eoan.

  Following conversion, both mount and btrfs check report an extent that
  reached beyond the end of the device:

  ERROR: dev extent devid 1 physical offset 126701535232 len 33554432 is
  beyond device boudnary 126726701056

  I was doing this booted from a live USB image, so I only have pictures
  of the screen, which I will attach.

  I used -d to speed up creation of the ext2 image, but it also happens
  without -d.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/btrfs-progs/+bug/1869281/+subscriptions