[Linux-cluster] cannot run cluster service

[Alfred Gumbs]

I'm not certain of your complete configuration.  However looking at the entry that you placed in the volume_list.  It looks like you listed the VG that is part of your cluster's resource group.  However, the volume_lists should actually list all the volume groups that are not part of the cluster.  

The VG's in the volume_list are actually the ones that the system needs to bring up.  The volume group that are part of the cluster will be brought up by rgmanager, so they should not  be in volumes_list.  The reason for the system panic is because the required volume groups were not listed in volume_list.  So the kernel could not varyon the system VG.

If I have mistakenly interprettted what you've done I'm sorry.  
  ----- Original Message ----- 
  From: Shanti Pahari 
  To: 'Andrew Denton' ; 'linux clustering' 
  Sent: Wednesday, October 10, 2012 9:54 PM
  Subject: Re: [Linux-cluster] cannot run cluster service


  Hi Andrew,

   

  Now I added following in my lvm.conf

  volume_list = [ "vg_pdcpicpl02", "@PDC-PIC-PL-CL1", "@PDC-PIC-PL-CL2" ]

  and

  # dracut --hostonly --force /boot/initramfs-$(uname -r).img $(uname -r)

  # shutdown -r now "Activating ramdisk LVM changes"

   

  After that when the system tries to boot up:

  Kernel panic - not syncing: Attempted to kill init!

   

  So didn't have luck L

   


  volume_list = [ "vg_pdcpicpl02", "@PDC-PIC-PL-CL1", "@PDC-PIC-PL-CL2" ]

  The hostname should be cluster connect name or initial hostname ?

  My /etc/hosts:

   

  192.168.24.32   PDC-PIC-PL-01   PDC-PIC-PL-01.chcs.sg

  192.168.25.132  PDC-PIC-PL-01-PM        

  192.168.26.13   PDC-PIC-PL-CL1

  192.168.24.33   PDC-PIC-PL-02  PDC-PIC-PL-02.chcs.sg

  192.168.25.133  PDC-PIC-PL-02-PM

  192.168.26.14   PDC-PIC-PL-CL2

   

   

   

  From: Andrew Denton [mailto:andrewd at sterling.net] 
  Sent: Wednesday, 10 October, 2012 11:27 PM
  To: linux clustering
  Cc: Shanti Pahari
  Subject: Re: [Linux-cluster] cannot run cluster service

   

  On 10/10/2012 12:06 AM, Shanti Pahari wrote:

    I have cluster setup with 2 node and created web cluster service on it but it cannot run. 

    I have not listed anything in lvm.conf volume_list because once I add anything in volume_list and reboot the system then I cannot mount and even cannot read the lv which I created for my web . It throws error as 

    error message "not activating volume group lv does not pass activation filter"

    Therefore I didn't add anything in lvm.conf . Then I try to start my cluster servers for web server but the service failed.


  I've seen this failure too when building my cluster. You either need to add the system's volume groups to volume_list, or tag the system's vgs with the @hostname so it can still activate them. 
  e.g.
      volume_list = [ "vg_pdcpicpl01", "@PDC-PIC-PL-CL1", "@PDC-PIC-PL-CL2" ]
  on one node and
      volume_list = [ "vg_pdcpicpl02", "@PDC-PIC-PL-CL1", "@PDC-PIC-PL-CL2" ]
  on the other. Next it will complain about initrd being older than lvm.conf, so I've been running
  # mkinitrd -f /boot/initrd-`uname -r`.img `uname -r`
  Not sure if that's the right command but it works for me =)

  One of these days I'm going to tag the system's vgs properly so I can use the same lvm.conf across the nodes. I think it's something like
  lvchange --addtag PDC-PIC-PL-CL1 vg_pdcpicpl01/lv_root 
  etc...

  By the way, to display how things are tagged, you have to do
  lvs -o +tags
  I wish it displayed them in lvdisplay, but it doesn't.

  -- Andrew






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