[DRBD-user] LVM on top of DRBD - when/where vgchange -a y

Steven drbd at savetimehosting.com
Thu Aug 30 21:57:56 CEST 2007


Leroy van Logchem wrote:
> Steven wrote:
>> Hi,
>>
>> I have LVM2 on top of DRBD and it seem to work fine(with the proper 
>> LVM device filters: ), this is a file server.
>> I use it with with Xen, so I do NOT have the haresource configure to 
>> mount any LV as these are brought up by Xen.
>>
>> The problem is that when a host is brought down the hot standby is 
>> brought on-line BUT the vgchange command is NOT issued at the right 
>> time or not at all:
>> *Secondary node*
>> [root at deimos lvm]# lvscan
>>   inactive          '/dev/DATA/VSI' [1.00 GB] inherit
>>   inactive          '/dev/DATA/IMG' [10.00 GB] inherit
>>
> Try adding this just after the drbddisk:: in haresources and before 
> the mounting of filesystems.
>
> #!/bin/sh
> #
> # Startup script for Logical Volume Management
> # Arthur van Rooij @ WL|Delft Hydraulics july 2007
> #
> ##
>
> start()
> {
>        echo "Setting up Logical Volume Management"
>        /sbin/vgscan
>        /sbin/vgchange -a y
>        sleep 5
> }
>
> stop()
> {
>        echo "Stopping Logical Volume Management"
>        /sbin/vgchange -a n
> }
>
> # See how we were called.
>
>
> case "$1" in
>   start)
>    start
>    ;;
>
>   stop)
>    stop
>    ;;
>
>   restart)
>    stop
>    sleep 2
>    start
>    ;;
>   *)
>    echo "usage: $0 {start|stop|restart}"
>    exit 1
>    ;;
> esac
>
>
Thanks a lot, that solved my issue perfectly the first shot.

Regards,



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