[Linux-cluster] problems with clvmd

[Christine Caulfield]

On 17/04/11 21:52, Terry wrote:
> As a result of a strange situation where our licensing for storage
> dropped off, I need to join a centos 5.6 node to a now single node
> cluster.  I got it joined to the cluster but I am having issues with
> CLVMD.  Any lvm operations on both boxes hang.  For example, vgscan.
> I have increased debugging and I don't see any logs.  The VGs aren't
> being populated in /dev/mapper.  This WAS working right after I joined
> it to the cluster and now it's not for some unknown reason.  Not sure
> where to take this at this point.   I did find one weird startup log
> that I am not sure what it means yet:
> [root at omadvnfs01a ~]# dmesg | grep dlm
> dlm: no local IP address has been set
> dlm: cannot start dlm lowcomms -107
> dlm: Using TCP for communications
> dlm: connecting to 2
>


That message usually means that dlm_controld has failed to start. Try 
starting the cman daemons (groupd, dlm_controld) manually with the -D 
switch and read the output which might give some clues to why it's not 
working.

Chrissie

> [root at omadvnfs01a ~]# ps xauwwww | grep dlm
> root      5476  0.0  0.0  24736   760 ?        Ss   15:34   0:00
> /sbin/dlm_controld
> root      5502  0.0  0.0      0     0 ?        S<    15:34   0:00 [dlm_astd]
> root      5503  0.0  0.0      0     0 ?        S<    15:34   0:00 [dlm_scand]
> root      5504  0.0  0.0      0     0 ?        S<    15:34   0:00 [dlm_recv]
> root      5505  0.0  0.0      0     0 ?        S<    15:34   0:00 [dlm_send]
> root      5506  0.0  0.0      0     0 ?        S<    15:34   0:00 [dlm_recoverd]
> root      5546  0.0  0.0      0     0 ?        S<    15:35   0:00 [dlm_recoverd]
>
> [root at omadvnfs01a ~]# lsmod | grep dlm
> lock_dlm               52065  0
> gfs2                  529037  1 lock_dlm
> dlm                   160065  17 lock_dlm
> configfs               62045  2 dlm
>
>
> centos server:
> [root at omadvnfs01a ~]# rpm -q cman rgmanager lvm2-cluster
> cman-2.0.115-68.el5
> rgmanager-2.0.52-9.el5.centos
> lvm2-cluster-2.02.74-3.el5_6.1
>
> [root at omadvnfs01a ~]# ls /dev/mapper/ | grep -v mpath
> control
> VolGroup00-LogVol00
> VolGroup00-LogVol01
>
> rhel server:
> [root at omadvnfs01b network-scripts]# rpm -q cman rgmanager lvm2-cluster
> cman-2.0.115-34.el5
> rgmanager-2.0.52-6.el5
> lvm2-cluster-2.02.56-7.el5_5.4
>
> [root at omadvnfs01b network-scripts]# ls /dev/mapper/ | grep -v mpath
> control
> vg_data01a-lv_data01a
> vg_data01b-lv_data01b
> vg_data01c-lv_data01c
> vg_data01d-lv_data01d
> vg_data01e-lv_data01e
> vg_data01h-lv_data01h
> vg_data01i-lv_data01i
> VolGroup00-LogVol00
> VolGroup00-LogVol01
> VolGroup02-lv_data00
>
> [root at omadvnfs01b network-scripts]# clustat
> Cluster Status for omadvnfs01 @ Sun Apr 17 15:44:52 2011
> Member Status: Quorate
>
>   Member Name                                                     ID   Status
>   ------ ----                                                     ---- ------
>   omadvnfs01a.sec.jel.lc                                              1
> Online, rgmanager
>   omadvnfs01b.sec.jel.lc                                              2
> Online, Local, rgmanager
>
>   Service Name
> Owner (Last)                                                     State
>   ------- ----
> ----- ------                                                     -----
>   service:omadvnfs01-nfs-a
> omadvnfs01b.sec.jel.lc
> started
>   service:omadvnfs01-nfs-b
> omadvnfs01b.sec.jel.lc
> started
>   service:omadvnfs01-nfs-c
> omadvnfs01b.sec.jel.lc
> started
>   service:omadvnfs01-nfs-h
> omadvnfs01b.sec.jel.lc
> started
>   service:omadvnfs01-nfs-i
> omadvnfs01b.sec.jel.lc
> started
>   service:postgresql
> omadvnfs01b.sec.jel.lc
> started
>
>
> [root at omadvnfs01a ~]# cman_tool nodes
> Node  Sts   Inc   Joined               Name
>     1   M   1892   2011-04-17 15:34:24  omadvnfs01a.sec.jel.lc
>     2   M   1896   2011-04-17 15:34:24  omadvnfs01b.sec.jel.lc
>
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