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Re: [Linux-cluster] Antwort: Re: clvmd does not create vgs



It looks there is something I didn't catch from your messages, among them I think I missed the DRBD thing.
 
The /dev/VolGroup00/storage are physical devices (pv's) ? 
 
Strange naming as it confuses me to have a VG (VolGroup00) name in it, I tend to read this naming as being a LV (storage being a LV in VG VolGroup00...).
 
Anyway, if possible to have such names for PV's, are you saying that they are different physical devices on each nodes, the one on node1 being the source device of your DRBD setup and the one on node2 being the destination of your DRBD setup ?
 
I don't know much DRBD to help you, but were you expecting DRBD to create the VG storage automatically on the destination PV on node2 ?
 
Brem
  
 
 
 


 
2010/3/9 Michael <st0rm2oo3 yahoo de>
Hi,

vgchange -ay didnt help. Here is the output from pvs on both nodes

[root node1 ~]# pvs

  PV                      VG              Fmt  Attr PSize   PFree
  /dev/VolGroup00/storage storage_cluster lvm2 a-     1,14T 1,14T

  /dev/sda2               VolGroup00      lvm2 a-   557,62G    0
  /dev/sdb1               VolGroup00      lvm2 a-     1,09T    0

[root node2 ~]# pvs

  PV                      VG         Fmt  Attr PSize   PFree
  /dev/VolGroup00/storage            lvm2 --     1,14T 1,14T
  /dev/sda2               VolGroup00 lvm2 a-   557,62G    0
  /dev/sdb1               VolGroup00 lvm2 a-     1,09T    0

/dev/VolGroup00/storage is my drdb device. I created it on different vg.




Von: brem belguebli <brem belguebli gmail com>

An: linux clustering <linux-cluster redhat com>
Gesendet: Montag, den 8. März 2010, 18:04:28 Uhr
Betreff: Re: [Linux-cluster] Antwort: Re: clvmd does not create vgs

Hi,
 
On node1, you created the pv /dev/drbd/by-res/repdata (pvcreate) and added it to VG storage_cluster  (vgcreate ....).
 
On node2, as long as the device /dev/drbd/by-res/repdata  is accessible, a simple vgscan would discover the newly created pv and vg.
 
If there was a locking issue, it would complain on node2 that it couldn't activate any LV from  storage_cluster.
 
Can you post the output of pvs on node2 ?
 
 
This is how it works for me
 
Brem

2010/3/8 Bernd Giese <bernd giese warburg-invest com>

vgchange -ay on both nodes



brem belguebli <brem belguebli gmail com>
Gesendet von: linux-cluster-bounces redhat com

08.03.2010 13:49

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Re: [Linux-cluster] clvmd does not create vgs








have you tried to pvscan/vgscan on node2 after creation on node1 ?


2010/3/8 Michael <st0rm2oo3 yahoo de>:
> no suggestion?
>
> Thanks
>
>
>
> ----- Ursprüngliche Mail ----
> Von: Michael <st0rm2oo3 yahoo de>
> An: linux-cluster redhat com
> Gesendet: Donnerstag, den 4. März 2010, 11:12:51 Uhr
> Betreff: [Linux-cluster] clvmd does not create vgs
>
> Hi,
>
> we are curenty using cman, clvmd and drbd. The problem occurs when we want to create volume groups. DRBD shows that both nodes are UpToDate. So first I try create a Physical Volume:
>
> [root node1 log]# pvcreate /dev/drbd/by-res/repdata
>  Physical volume "/dev/drbd/by-res/repdata" successfully created
>
> [root node2 tmp]# pvs
>  PV                      VG         Fmt  Attr PSize   PFree
>  /dev/VolGroup00/storage            lvm2 --     1,14T 1,14T
>  /dev/sda2               VolGroup00 lvm2 a-   557,62G    0
>  /dev/sdb1               VolGroup00 lvm2 a-     1,09T    0
>
> Well, /dev/VolGroup00/storage created on both nodes. Fine. Next I want to create a Volume Group:
>
> [root node1 log]# vgcreate storage_cluster /dev/drbd/by-res/repdata
> vgcreate storage_cluster /dev/drbd0
>  Clustered volume group "storage_cluster" successfully created
>
> [root node1 log]# vgs
>  VG              #PV #LV #SN Attr   VSize VFree
>  VolGroup00        2   3   0 wz--n- 1,63T    0
>  storage_cluster   1   0   0 wz--nc 1,14T 1,14T
>
>
> [root node2 tmp]# vgs
>  VG         #PV #LV #SN Attr   VSize VFree
>  VolGroup00   2   3   0 wz--n- 1,63T    0
>
> Hmmm... there is no vg on node2. I restart the whole server but still no vg visible. What could be wrong?
>
> We're using Centos 5.4 with all patches installed.
>
> cman-2.0.115-1.el5_4.9
> lvm2-2.02.46-8.el5_4.2
> lvm2-cluster-2.02.46-8.el5_4.1
>
> Thanks in advanced and best regards,
>
> Michael
>
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