This site best when viewed with a modern standards-compliant browser. We recommend Firefox Get Firefox!.

Linux-HA project logo
Providing Open Source High-Availability Software for Linux and other OSes since 1999.

USA Flag UK Flag

Japanese Flag

Homepage

About Us

Contact Us

Legal Info

How To Contribute

Security Issues

This web page is no longer maintained. Information presented here exists only to avoid breaking historical links.
The Project stays maintained, and lives on: see the Linux-HA Reference Documentation.
To get rid of this notice, you may want to browse the old wiki instead.

1 February 2010 Hearbeat 3.0.2 released see the Release Notes

18 January 2009 Pacemaker 1.0.7 released see the Release Notes

16 November 2009 LINBIT new Heartbeat Steward see the Announcement

Last site update:
2018-10-23 03:39:10

Here is a list of issues (and hopefully resolutions) encountered while getting Linux-HA to run on an OpenPower 720:

  1. Sharing DASD between two LPARs
    1. Shut down all affected LPARs, including Virtual I/O Server
    2. On HMC, create two virtual SCSI server adapters for Virtual I/O Server LPAR with unique slot numbers (i.e. 31 and 41)
    3. On HMC, create a virtual SCSI client adapter for each Linux LPAR that connects to the slot numbers from previous step (i.e. VIO.31 on first LPAR, VIO.41 on second)
    4. Activate Virtual I/O Server LPAR and login
    5. Assign the same backing DASD to both of the newly created vhosts using different device names; for example (assuming dasdvg volume group exists, shared data is to be 20GB, and vhost5 and vhost6 represent slots 31 and 41, respectively):
      • mklv -lv my_shared_data dasdvg 20G mkvdev -vdev my_shared_data -vadapter vhost5 -dev dev_LPAR1_shared mkvdev -vdev my_shared_data -vadapter vhost6 -dev dev_LPAR2_shared
    6. Activate both Linux LPARs and login
    7. From first Linux LPAR (assuming shared data will be JFS partition on /dev/sdb):
      • mkfs.jfs /dev/sdb mkdir /shared_data mount -t jfs /dev/sdb /shared_data

        echo Hello shared world! > /shared_data/my_file umount /dev/sdb

    8. From second Linux LPAR (again assuming shared data will be JFS partition on /dev/sdb):
      • mkdir /shared_data mount -t jfs /dev/sdb /shared_data blockdev --flushbufs /dev/sdb cat /shared_data/my_file
    Hopefully at this point "Hello shared world!" is displayed on your terminal.
  2. HMC and VIOS command complexity

    Command line syntax for both the HMC and Virtual I/O Server are extremely complex. See for yourself, here is the 1375-line script used to setup the LPARs on the HMC (LWE-HMCScript.sh) and here is the 300-line script used to setup the LPARs' virtual Ethernet and SCSI adapters on the VIOS (LWE-VIOSScript.sh).