[Bug 1878384] [NEW] Error when using btrfs sub snapshot & send | receive

[Rene]

Public bug reported:

I am creating snapshots of my /-subvolume and use send | receive for
incremental transferring. Sometimes I get errors like "ERROR: cannot
open /media/Backup/OS/snapshots/snap_2020-05-13_11:39/o13170-19818-0: No
such file or directory" When I look deeper with the -v option, it seems
like btrfs is creating a folder or something, moves it and then tries to
rename the original folder.

The error occures on different devices, but only when I make snapshots
of the root of my os subvolume. The error occures only from time to time
(perhaps every 5th to 15th snapshot) the only solution to send a new
snapshot complete and then send incremental snapshots.

I tried different kernels:
Currently I am using 5.3.0-51-generic on one device and also tried 5.5 and 5.6.

I found this topic on github, where some people have the same errors.
(but I am using an own script, not that program)

https://github.com/digint/btrbk/issues/223

Description:    Ubuntu 19.10
Release:        19.10

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

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https://bugs.launchpad.net/bugs/1878384

Title:
  Error when using btrfs sub snapshot & send | receive

Status in btrfs-progs package in Ubuntu:
  New

Bug description:
  I am creating snapshots of my /-subvolume and use send | receive for
  incremental transferring. Sometimes I get errors like "ERROR: cannot
  open /media/Backup/OS/snapshots/snap_2020-05-13_11:39/o13170-19818-0:
  No such file or directory" When I look deeper with the -v option, it
  seems like btrfs is creating a folder or something, moves it and then
  tries to rename the original folder.

  The error occures on different devices, but only when I make snapshots
  of the root of my os subvolume. The error occures only from time to
  time (perhaps every 5th to 15th snapshot) the only solution to send a
  new snapshot complete and then send incremental snapshots.

  I tried different kernels:
  Currently I am using 5.3.0-51-generic on one device and also tried 5.5 and 5.6.

  I found this topic on github, where some people have the same errors.
  (but I am using an own script, not that program)

  https://github.com/digint/btrbk/issues/223

  Description:    Ubuntu 19.10
  Release:        19.10

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