On Sat, 2010-03-13 at 09:18 -0500, Alan Altmark wrote:
> On Saturday, 03/13/2010 at 06:49 EST, Frank Pani <fpa...@ca.ibm.com>
> wrote:
>
> > 1) Because the database will be 200-300GB, we can use LVM and have it
> > available to mount RW on either system. We need to be very careful not
> to
> > mount RW at the same time; else we risk destroying the data. In cases
> > where customers are using VMWARE or Xen on distributed, you ensure this
> by
> > using PaceMaker to tell the hypervisor to issue a STONITH to totally
> kill
> > the primary machine. This ensures, that the filesystem will be RW only
> on
> > the backup now. However! There is currently no capability on z/VM to
> > allow PaceMaker (or any other software that I know of) to do this.
>
> For quite a while now we have had the System Management API (SMAPI). Write
> a program on Linux that uses SMAPI to stop the Linux guest. Have
> PaceMaker execute said program.
Linux provides the snipl command (incl. a STONITH plugin) to kill a
system (LPAR or z/VM guest). It is available with SLES10 / SLES11 or can
be downloaded from:
http://www.ibm.com/developerworks/linux/linux390/snipl.html
Ursula Braun
Linux on System z development
IBM Boeblingen
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