[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [Linux-cluster] CLVMD without GFS

That's what I 'm trying to do.
If you mean lvm.sh, well, I've been playing with it, but it does some "sanity" checks that are wierd
  1. It expects HA LVM to be setup (why such check if we want to use CLVM).
  2. it exits if it finds a CLVM VG  (kind of funny !)
  3. it exits if the lvm.conf is newer than /boot/*.img (about this one, we tend to prevent the cluster from automatically starting ...)
I was looking to find some doc on how to write my own resources, ie CLVM resource that checks if the vg is clustered, if so by which node is it exclusively held, and if the node is down to activate exclusively the VG.
If you have some good links to provide me, that'll be great.

2009/7/21, Christine Caulfield <ccaulfie redhat com>:
On 07/21/2009 01:11 PM, brem belguebli wrote:
When creating the VG by default clustered, you implicitely assume that
it will be used with a clustered FS on top of it (gfs, ocfs, etc...)
that will handle the active/active mode.
As I do not intend to use GFS in this particular case, but ext3 and raw
devices, I need to make sure the vg is exclusively activated on one
node, preventing the other nodes to access it unless it is the failover
procedure (node holding the VG crashed) and then re activate it
exclusively on the failover node.

In that case you probably ought to be using rgmanager to do the failover for you. It has a script for doing exactly this :-)


Linux-cluster mailing list
Linux-cluster redhat com

[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]