This is all a good lead. I will have to let you folks know how it turns out.
Thanks! - Frank Pani From: Ursula Braun <[email protected]> To: [email protected] Date: 03/15/2010 06:10 AM Subject: Re: Linux HA with RHEL and MySQL on System z On Sat, 2010-03-13 at 09:18 -0500, Alan Altmark wrote: > On Saturday, 03/13/2010 at 06:49 EST, Frank Pani <[email protected]> > 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 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
