LVREMOVE problem

jonathanb · Jun 22, 2011

Hello everyone,

I found out that if I want to delete a VM that I would need to use lvremove vm-101-disk-1. The problem is that I would get a "Volume group "vm-101-disk-2" not found". I'm a beginner with Linux. What am I doing wrong? Do I need to get in a directory before I can use lvremove? If there is another way to delete these VM's I would gladly hear about it.

Please help me

udo · Jun 22, 2011

jonathanb said:
Hello everyone,

I found out that if I want to delete a VM that I would need to use lvremove vm-101-disk-1. The problem is that I would get a "Volume group "vm-101-disk-2" not found". I'm a beginner with Linux. What am I doing wrong? Do I need to get in a directory before I can use lvremove? If there is another way to delete these VM's I would gladly hear about it.

Please help me

Hi,
look at the console which logical volumes and volumegroups do you have:

Code:

vgdisplay
lvdisplay

If you haven't the lv yet (because you remove the lvm-storage) you can also remove the vm-config at /etc/qemu-server/ (take a look inside the config-file).

Udo

dietmar · Jun 22, 2011

jonathanb said:
would need to use lvremove vm-101-disk-1.

Try

# lvremove pve/vm-101-disk-1

NOTE: you need to specify the VG

jonathanb · Jun 22, 2011

Hello Udo and thank you for your fast reply!

vgdisplay output:

Code:

xenhead:/dev/hdd_sda1# vgdisplay
  --- Volume group ---
  VG Name               hdd_sde1
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  16
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               1.36 TB
  PE Size               4.00 MB
  Total PE              357699
  Alloc PE / Size       345856 / 1.32 TB
  Free  PE / Size       11843 / 46.26 GB
  VG UUID               KaCVeo-vnHf-jq2P-uZaP-Yutp-8abV-4FYYAY

  --- Volume group ---
  VG Name               pve
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               148.55 GB
  PE Size               4.00 MB
  Total PE              38028
  Alloc PE / Size       37005 / 144.55 GB
  Free  PE / Size       1023 / 4.00 GB
  VG UUID               3XSnlc-9vnU-0eJL-taq6-1UMX-9BLq-ex8JI8

  --- Volume group ---
  VG Name               hdd_sdc1
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  7
  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               1.36 TB
  PE Size               4.00 MB
  Total PE              357699
  Alloc PE / Size       0 / 0
  Free  PE / Size       357699 / 1.36 TB
  VG UUID               bUQgkH-q4gI-LlAf-NvHT-ipD8-Nhop-y4mVDP

  --- Volume group ---
  VG Name               hdd_sdb1
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  1
  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               1.36 TB
  PE Size               4.00 MB
  Total PE              357699
  Alloc PE / Size       0 / 0
  Free  PE / Size       357699 / 1.36 TB
  VG UUID               O2D8cn-aPLE-COXa-gVYB-qMUI-DLRX-ez3obq

  --- Volume group ---
  VG Name               hdd_sda1
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  21
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                7
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               1.36 TB
  PE Size               4.00 MB
  Total PE              357699
  Alloc PE / Size       110853 / 433.02 GB
  Free  PE / Size       246846 / 964.24 GB
  VG UUID               OllYXB-zdWq-3pgm-GhyI-5NOG-YlvE-FhL2rk

lvdisplay output:

Code:

xenhead:/dev/hdd_sda1# lvdisplay
  --- Logical volume ---
  LV Name                /dev/hdd_sde1/vm-102-disk-1
  VG Name                hdd_sde1
  LV UUID                BwHeo4-OwYA-spnF-LHaT-B1JS-A7UO-26lLik
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                1.00 GB
  Current LE             256
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:3

  --- Logical volume ---
  LV Name                /dev/hdd_sde1/vm-102-disk-2
  VG Name                hdd_sde1
  LV UUID                XJiERo-dwrv-lgLb-mdWZ-pvlR-dYh6-HwUWVv
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                900.00 GB
  Current LE             230400
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:4

  --- Logical volume ---
  LV Name                /dev/hdd_sde1/vm-102-disk-3
  VG Name                hdd_sde1
  LV UUID                3zyI4f-2l0X-ABhe-J2WS-95Aq-tXaG-WI7je2
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                450.00 GB
  Current LE             115200
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:5

  --- Logical volume ---
  LV Name                /dev/pve/swap
  VG Name                pve
  LV UUID                06fqSX-VYSB-XIo6-SPTB-opLg-ttOf-sHjL5T
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                4.00 GB
  Current LE             1024
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:0

  --- Logical volume ---
  LV Name                /dev/pve/root
  VG Name                pve
  LV UUID                dy8c0M-PHuf-itPV-mEDY-VUK1-Ws1H-h1QN2O
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                37.25 GB
  Current LE             9536
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:1

  --- Logical volume ---
  LV Name                /dev/pve/data
  VG Name                pve
  LV UUID                cAsMyx-um6t-zHGw-IFtO-ce9d-BzjU-qFX7gc
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                103.30 GB
  Current LE             26445
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:2

  --- Logical volume ---
  LV Name                /dev/hdd_sda1/vm-500-disk-1
  VG Name                hdd_sda1
  LV UUID                m246ZN-Poc3-0s9j-oEBa-Glar-7tLN-fk3Roo
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                80.00 GB
  Current LE             20481
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:6

  --- Logical volume ---
  LV Name                /dev/hdd_sda1/vm-500-disk-2
  VG Name                hdd_sda1
  LV UUID                TR2f0i-CSsV-4fzJ-Vawo-2V4T-RR9C-KNeO5y
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                80.00 GB
  Current LE             20481
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:7

  --- Logical volume ---
  LV Name                /dev/hdd_sda1/vm-500-disk-3
  VG Name                hdd_sda1
  LV UUID                BXwF8K-F7c4-09x8-cl5K-UfDw-jdAT-sCR3HX
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                80.00 GB
  Current LE             20481
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:8

  --- Logical volume ---
  LV Name                /dev/hdd_sda1/vm-166-disk-1
  VG Name                hdd_sda1
  LV UUID                gdp2OM-fRuQ-fRUI-n3KI-eSbI-QdOj-mDqegM
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                80.00 GB
  Current LE             20481
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:9

  --- Logical volume ---
  LV Name                /dev/hdd_sda1/vzsnap-xenhead-0
  VG Name                hdd_sda1
  LV UUID                zhf7cU-Z08k-EOvR-LeL5-pHwf-2n6R-pE171O
  LV Write Access        read/write
  LV snapshot status     active destination for /dev/hdd_sda1/vm-101-disk-2
  LV Status              available
  # open                 0
  LV Size                32.00 GB
  Current LE             8192
  COW-table size         1.00 GB
  COW-table LE           256
  Allocated to snapshot  1.35%
  Snapshot chunk size    4.00 KB
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:14

I have one config file from my VM and that is 102.conf.

Code:

xenhead:/dev/hdd_sda1# cd /etc/qemu-server/
xenhead:/etc/qemu-server# ls
102.conf

As far as I can see, there is no conf file of the other VM's. Those other VM's where failed qmrestore's which I can't delete from the WebGUI. I tried to delete some files in the /dev/hdd_sda1/ but when I looked in the directory again, those files came back. I don't really understand Proxmox and thought that when I removed these files I would also remove the bad VM's.

Code:

xenhead:/etc/qemu-server# cd /dev/hdd_sda1/
xenhead:/dev/hdd_sda1# ls
vm-101-disk-2  vm-201-disk-1  vm-500-disk-2  vzsnap-xenhead-0
vm-166-disk-1  vm-500-disk-1  vm-500-disk-3

Is there another way to remove it and did I used lvremove the right way?

---
Jonathanb

udo · Jun 22, 2011

jonathanb said:

Hello Udo and thank you for your fast reply!

lvdisplay output:

Code:

...
  --- Logical volume ---
  LV Name                /dev/hdd_sda1/vzsnap-xenhead-0
  VG Name                hdd_sda1
  LV UUID                zhf7cU-Z08k-EOvR-LeL5-pHwf-2n6R-pE171O
  LV Write Access        read/write
  LV snapshot status     active destination for /dev/hdd_sda1/vm-101-disk-2
  LV Status              available
  # open                 0
  LV Size                32.00 GB
  Current LE             8192
  COW-table size         1.00 GB
  COW-table LE           256
  Allocated to snapshot  1.35%
  Snapshot chunk size    4.00 KB
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:14

...
Jonathanb

Hi,
is your pve configured as cluster? and the vm 101 on the other node?
Anyway, your vm-101-disk-2 has an active snapshot (something goes wrong during backup?)! So you must first remove the snapshot, than should the remove work.

Udo

jonathanb · Jun 22, 2011

Hello Udo,

I have only one Proxmox server and no clusters. I tried to delete those backups or snapshots or whatever people call it, but I don't know how. I only want to delete those backups that went wrong and the people that I'm asking don't know how either. It's very frustrating and I have this problem for more then a half year.

Here are some screenshots that hopefully will help explain what I want.

I just need to delete those VM disks manually one way or another, but without a reinstall.

udo · Jun 22, 2011

Hi,
to delete an unsused logical volume you can do something like this (be sure to know what you are doing and have valid backups):

Code:

lvchange -a n /dev/hdd_sda1/vm-500-disk-1
lvremove /dev/hdd_sda1/vm-500-disk-1     # perhaps you need the option " -f "

You should also be able to delete the snapshot in the same manner.

Udo

jonathanb · Jul 13, 2011

I didn't say thank you so thank you Udo for this! You helped me a lot with this so again .. thank you and the same for you Dietmar.

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