[Bug 624911] [NEW] btrfs: unable to delete empty directory

[Kai Blin]

Public bug reported:

When trying to delete an empty directory on a btrfs partition I'm
getting the following error:

root at ceph-mds:~# rm -rf /data/old/
rm: cannot remove `/data/old/broken': Directory not empty

However:

root at ceph-mds:~# ls -la /data/old/broken/
total 0
drwxr-xr-x 1 root root  0 2010-08-26 07:29 .
drwxr-xr-x 1 root root 12 2010-08-26 22:10 ..

Also, I don't fully understand why rm -rf would care about non-empty
directories.

I've since upgraded the kernel twice with the maverick updates, so I
also rebooted twice, no change. So it's not some file that was deleted
but is still opened by some process. I've tried btrfsck, but that didn't
complain either.

Currently trying if I can reproduce this on another machine.
Unfortunately /data simply is part of the / partition, so reformatting
would be a bit annoying. Can do if needed, of course.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-19-server 2.6.35-19.25
Regression: No
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.35-19.25-server 2.6.35.3
Uname: Linux 2.6.35-19-server x86_64
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
CurrentDmesg:
 
Date: Thu Aug 26 21:56:04 2010
Frequency: This has only happened once.
InstallationMedia: Ubuntu-Server 10.10 "Maverick Meerkat" - Alpha amd64 (20100804.3)
Lsusb: Error: command ['lsusb'] failed with exit code 1:
MachineType: innotek GmbH VirtualBox
PciMultimedia:
 
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-19-server root=/dev/sda2 ro quiet
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug kernel-fs maverick needs-upstream-testing

-- 
btrfs: unable to delete empty directory
https://bugs.launchpad.net/bugs/624911
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