drbd+lvm2 on quantal quetzal uname to de-activate logical volumes

[ric_da_inf]

# lsb_release -rd

Description: Ubuntu 12.10
Release: 12.10

# apt-cache policy lvm2
lvm2:
  Installed: 2.02.95-4ubuntu1
  Candidate: 2.02.95-4ubuntu1
  Version table:
 *** 2.02.95-4ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
        100 /var/lib/dpkg/status
root@server01:~# apt-cache policy drbd
drbd8-utils drbdlinks

# apt-cache policy drbd8-utils
drbd8-utils:
  Installed: 2:8.3.13-1.1ubuntu1
  Candidate: 2:8.3.13-1.1ubuntu1
  Version table:
 *** 2:8.3.13-1.1ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
        100 /var/lib/dpkg/status

# uname -a
Linux server01 3.5.0-19-generic #30-Ubuntu SMP Tue Nov 13 17:48:01 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

# cat /etc/drbd.d/drbd_sp1.res
resource drbd_sp1 {

        protocol C;

        startup {
                wfc-timeout 15;
                degr-wfc-timeout 60;
                become-primary-on server01;
        }

        disk {
                on-io-error detach;
        }

        net {
                cram-hmac-alg sha1;
                shared-secret "asdasd";
                after-sb-0pri discard-zero-changes;
                after-sb-1pri discard-secondary;
                after-sb-2pri disconnect;
                rr-conflict disconnect;
        }

        syncer {
                rate 100M;
                verify-alg sha1;
                al-extents 257;
        }

        on server01 {
                device /dev/drbd1;
                disk /dev/sda6;
                address 10.0.0.35:7788;
                meta-disk internal;
        }

        on server02 {
                device /dev/drbd1;
                disk /dev/sda6;
                address 10.0.0.36:7788;
                meta-disk internal;
        }
}

# pvdisplay
  --- Physical volume ---
  PV Name /dev/drbd1
  VG Name sp1
  PV Size 9.02 GiB / not usable 3.68 MiB
  Allocatable yes
  PE Size 4.00 MiB
  Total PE 2308
  Free PE 2052
  Allocated PE 256
  PV UUID PV1zLn-tDNh-DK3E-3egp-SqG0-6coB-IA3864

# vgdisplay
  --- Volume group ---
  VG Name sp1
  System ID
  Format lvm2
  Metadata Areas 1
  Metadata Sequence No 2
  VG Access read/write
  VG Status resizable
  MAX LV 0
  Cur LV 1
  Open LV 0
  Max PV 0
  Cur PV 1
  Act PV 1
  VG Size 9.02 GiB
  PE Size 4.00 MiB
  Total PE 2308
  Alloc PE / Size 256 / 1.00 GiB
  Free PE / Size 2052 / 8.02 GiB
  VG UUID kfRfDM-4L32-sv33-wsQv-ApqA-wFW2-sSTo3e

# lvdisplay
  --- Logical volume ---
  LV Path /dev/sp1/test_disk01
  LV Name test_disk01
  VG Name sp1
  LV UUID uNYEy7-zwo5-WAjh-Gw1i-jmO7-ERpQ-E5JHIt
  LV Write Access read/write
  LV Creation host, time server01, 2012-12-14 11:40:56 +0100
  LV Status available
  # open 0
  LV Size 1.00 GiB
  Current LE 256
  Segments 1
  Allocation inherit
  Read ahead sectors auto
  - currently set to 256
  Block device 252:0

# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 38445384 1488864 35003448 5% /
udev 2015328 4 2015324 1% /dev
tmpfs 809936 244 809692 1% /run
none 5120 4 5116 1% /run/lock
none 2024836 0 2024836 0% /run/shm
none 102400 0 102400 0% /run/user

# drbd-overview
 1:drbd_sp1 Connected Primary/Secondary UpToDate/UpToDate C r-----

# lvchange -a n /dev/sp1/test_disk01
(cannot see any error messages)
# lvscan
  ACTIVE '/dev/sp1/test_disk01' [1.00 GiB] inherit

It seems lvm2 not change from ACTIVE to inactive if drbd driver used as pv.

# vgchange -a n sp1
  0 logical volume(s) in volume group "sp1" now active
# lvscan
  ACTIVE '/dev/sp1/test_disk01' [1.00 GiB] inherit

Same problem if you try to de-activate volume group.

In this situation you cannot migrate drbd device :
# drbdadm secondary drbd_sp1
1: State change failed: (-12) Device is held open by someone
Command 'drbdsetup 1 secondary' terminated with exit code 11

On Precise Pangolin this configuration run without problem.

[Dimitri John Ledkov (xnox)]

This is potentially a duplicate of bug 1088081 .
It would be useful to increase udev debugging and attach udev events that happen during "vgchange -a n sp1" to check if this is the same as bug 1088081 or not.