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vgremove fails to remove empty VG (v2.02.98)

linux-lvm Joschi Brauchle 3 participants 6 messages Jan 23, 2013 – Jan 24, 2013

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Joschi Brauchle

author
#0 lore raw

Hello,

I get the following error with lvm2.02.98:
-----------
#/sbin/vgdisplay --units k -v 'system'

--- Volume group ---
VG Name system
System ID

  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  13
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               104669184.00 KiB
  PE Size               4096.00 KiB
  Total PE              25554
  Alloc PE / Size       0 / 0 KiB
  Free  PE / Size       25554 / 104669184.00 KiB
  VG UUID               Qs0uaZ-L88n-tC7T-fZQj-sgJY-2yRX-Dlt2Cr

--- Physical volumes ---

  PV Name               /dev/sda3
  PV UUID               wzGjXi-F2lT-d2d4-l5a6-EmfM-W838-YxaFIh
  PV Status             allocatable
  Total PE / Free PE    25554 / 25554

-----------

VG system is empty, but still:
-----------

# /sbin/vgremove 'system'
-----------
failes with status code 5, which means 'can't remove volume group containing logical volumes' (from man page).

Looks like a bug in vgremove?

Best regards,
J Brauchle

#1 lore raw
Quoted 1 line · Joschi Brauchle

Hello,

Hello!

Quoted 35 lines

I get the following error with lvm2.02.98:
-----------
#/sbin/vgdisplay --units k -v 'system'

--- Volume group ---
VG Name system
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 13
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 104669184.00 KiB
PE Size 4096.00 KiB
Total PE 25554
Alloc PE / Size 0 / 0 KiB
Free PE / Size 25554 / 104669184.00 KiB
VG UUID Qs0uaZ-L88n-tC7T-fZQj-sgJY-2yRX-Dlt2Cr

--- Physical volumes ---
PV Name /dev/sda3
PV UUID wzGjXi-F2lT-d2d4-l5a6-EmfM-W838-YxaFIh
PV Status allocatable
Total PE / Free PE 25554 / 25554
-----------

VG system is empty, but still:
-----------

Quoted 8 lines
# /sbin/vgremove 'system'
-----------
failes with status code 5, which means 'can't remove volume group
containing logical volumes' (from man page).

Looks like a bug in vgremove?

Possibly. Could you fill in these gaps in the puzzle:

0. Which distro?

1. Do a lvmdump for bug report:

lvmdump -ma

2. Try with verbose

vgremove -vvvv &> vgremove-dirty.out

3. Check if lvmetad is running:

ps aux | grep lvmetad

3.1 if so, the issue is likely to go away after restarting it. If you gcore or kill -SEGV it to get a core dump it may help us.

3.2 do another lvmdump here, to get "updated" data after lvmdump restart

3.3 retry vgremove

vgremove -vvvv &> vgremove-reloaded.out

4. pastebin the vgremove-dirty.out and we will be able to tell more then.

Quoted 11 lines

Best regards,
J Brauchle

_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

#4 lore raw
In reply to Joschi Brauchle

Hi

Did you used vgreduce to release free the disk?

Quoted 53 lines · Joschi Brauchle

Hello,

I get the following error with lvm2.02.98:
-----------
#/sbin/vgdisplay --units k -v 'system'

--- Volume group ---
VG Name system
System ID

  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  13
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               104669184.00 KiB
  PE Size               4096.00 KiB
  Total PE              25554
  Alloc PE / Size       0 / 0 KiB
  Free  PE / Size       25554 / 104669184.00 KiB
  VG UUID               Qs0uaZ-L88n-tC7T-fZQj-sgJY-**2yRX-Dlt2Cr

--- Physical volumes ---

  PV Name               /dev/sda3
  PV UUID               wzGjXi-F2lT-d2d4-l5a6-EmfM-**W838-YxaFIh
  PV Status             allocatable
  Total PE / Free PE    25554 / 25554

-----------

VG system is empty, but still:
-----------

# /sbin/vgremove 'system'
-----------
failes with status code 5, which means 'can't remove volume group
containing logical volumes' (from man page).

Looks like a bug in vgremove?

Best regards,
J Brauchle

_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

author
#2 lore raw
In reply to Marian Csontos

Thanks for the detailed instructions, here are (some of) the missing gaps :-)

Quoted 32 lines
Quoted 32 lines

I get the following error with lvm2.02.98:
-----------
#/sbin/vgdisplay --units k -v 'system'

--- Volume group ---
VG Name system
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 13
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 104669184.00 KiB
PE Size 4096.00 KiB
Total PE 25554
Alloc PE / Size 0 / 0 KiB
Free PE / Size 25554 / 104669184.00 KiB
VG UUID Qs0uaZ-L88n-tC7T-fZQj-sgJY-2yRX-Dlt2Cr

--- Physical volumes ---
PV Name /dev/sda3
PV UUID wzGjXi-F2lT-d2d4-l5a6-EmfM-W838-YxaFIh
PV Status allocatable
Total PE / Free PE 25554 / 25554
-----------

Quoted 8 lines
Quoted 7 lines

VG system is empty, but still:
-----------

# /sbin/vgremove 'system'
-----------
failes with status code 5, which means 'can't remove volume group
containing logical volumes' (from man page).

0. Which distro?

openSUSE 12.3 Beta 1 - Problem happens during installation, where an existing VGroup shall be removed.

Quoted 2 lines

1. lvmdump -ma

attached (hope that's ok)

Quoted 1 line

2. vgremove -vvvv &> vgremove-dirty.out

http://pastebin.com/cmek1bYi

Quoted 1 line

3. ps aux | grep lvmetad

Not running, no processes found. Skipping the remaining steps...

Quoted 6 lines

3.1 if so, the issue is likely to go away after restarting it. If you gcore or kill -SEGV it to get a core dump it may help us. 3.2 do another lvmdump here, to get "updated" data after lvmdump restart 3.3 retry 'vgremove -vvvv &> vgremove-reloaded.out'
4. pastebin the vgremove-dirty.out and we will be able to tell more then.

author
#5 lore raw
In reply to mohammad azimi
Quoted 1 line · mohammad azimi

Did you used vgreduce to release free the disk?

Well, no.

Actually, I am not performing those commands manually.
It is the openSUSE 12.3 installer (YaST2), that performs a sequence of commands during installation. It is told to create a new VG on an existing LVM partition. Hence, it first removes all LVs in the existing VG, then tries to remove the existing, empty VG using 'vgremove system'.

I tried to strip the series of commands from the YaST2 logs:
-------------

"/sbin/lvremove -f -A n  '/dev/system/var_log'"
"/sbin/lvremove -f -A n  '/dev/system/var'"
"/sbin/lvremove -f -A n  '/dev/system/usr'"
"/sbin/lvremove -f -A n  '/dev/system/tmp'"
"/sbin/lvremove -f -A n  '/dev/system/slash'"
"/sbin/lvremove -f -A n  '/dev/system/nobackup'"

"/sbin/vgremove 'system'"
-------------
=> Fails with exit code 5

openSUSE 12.3 is using
LVM version: 2.02.98(2) (2012-10-15)
Library version: 1.02.77 (2012-10-15)
Driver version: 4.23.0

Note that the EXACTLY same sequence of commands works OK for openSUSE 12.2 using
LVM version: 2.02.84(2) (2011-02-09)
Library version: 1.02.63 (2011-02-09)
Driver version: 4.22.0

Quoted 64 lines

On Jan 24, 2013 8:02 AM, "Joschi Brauchle" <[email protected] <mailto:[email protected]>> wrote:

Hello,

I get the following error with lvm2.02.98:
-----------
#/sbin/vgdisplay --units k -v 'system'

--- Volume group ---
VG Name system
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 13
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 104669184.00 KiB
PE Size 4096.00 KiB
Total PE 25554
Alloc PE / Size 0 / 0 KiB
Free PE / Size 25554 / 104669184.00 KiB
VG UUID Qs0uaZ-L88n-tC7T-fZQj-sgJY-__2yRX-Dlt2Cr

--- Physical volumes ---
PV Name /dev/sda3
PV UUID wzGjXi-F2lT-d2d4-l5a6-EmfM-__W838-YxaFIh
PV Status allocatable
Total PE / Free PE 25554 / 25554
-----------

VG system is empty, but still:
-----------
# /sbin/vgremove 'system'
-----------
failes with status code 5, which means 'can't remove volume group containing logical volumes' (from man page).

Looks like a bug in vgremove?

Best regards,
J Brauchle

_______________________________________________
linux-lvm mailing list
[email protected] <mailto:[email protected]>
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Signature · 10 lines
Dipl.-Ing. Joschi Brauchle, M.S.

Institute for Communications Engineering (LNT)
Technische Universitaet Muenchen (TUM)
80290 Munich, Germany

Tel (work): +49 89 289-23474
Fax (work): +49 89 289-23490
E-mail: [email protected]
Web: http://www.lnt.ei.tum.de/
#3 lore raw
In reply to Joschi Brauchle
Quoted 46 lines · Joschi Brauchle

Thanks for the detailed instructions, here are (some of) the missing gaps :-)

Quoted 32 lines
Quoted 32 lines

I get the following error with lvm2.02.98:
-----------
#/sbin/vgdisplay --units k -v 'system'

--- Volume group ---
VG Name system
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 13
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 104669184.00 KiB
PE Size 4096.00 KiB
Total PE 25554
Alloc PE / Size 0 / 0 KiB
Free PE / Size 25554 / 104669184.00 KiB
VG UUID Qs0uaZ-L88n-tC7T-fZQj-sgJY-2yRX-Dlt2Cr

--- Physical volumes ---
PV Name /dev/sda3
PV UUID wzGjXi-F2lT-d2d4-l5a6-EmfM-W838-YxaFIh
PV Status allocatable
Total PE / Free PE 25554 / 25554
-----------

Quoted 8 lines
Quoted 7 lines

VG system is empty, but still:
-----------

# /sbin/vgremove 'system'
-----------
failes with status code 5, which means 'can't remove volume group
containing logical volumes' (from man page).

0. Which distro?

openSUSE 12.3 Beta 1 - Problem happens during installation, where an existing VGroup shall be removed.

Quoted 1 line
Quoted 14 lines
Quoted 1 line

1. lvmdump -ma

attached (hope that's ok)

Quoted 1 line

2. vgremove -vvvv &> vgremove-dirty.out

http://pastebin.com/cmek1bYi

Quoted 1 line

3. ps aux | grep lvmetad

Not running, no processes found. Skipping the remaining steps...

Quoted 6 lines

3.1 if so, the issue is likely to go away after restarting it. If you gcore or kill -SEGV it to get a core dump it may help us. 3.2 do another lvmdump here, to get "updated" data after lvmdump restart 3.3 retry 'vgremove -vvvv &> vgremove-reloaded.out'
4. pastebin the vgremove-dirty.out and we will be able to tell more then.

Any chance the FS containing /etc/lvm is mounted read-only?

If so it may fail. There is a bug as no error is reported in that situation. See backup section of lvm.conf - set backup and archive to point to a writable FS.

If not, could you send a tarball with /etc/lvm: tar czf lvmdump-etc /etc/lvm/

Joining us on IRC: #lvm @ freenode guarantees faster answers.

-- Marian

Quoted 7 lines

_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/