InfoScale™ 9.0 Virtualization Guide - Linux

Last Published:
Product(s): InfoScale & Storage Foundation (9.0)
Platform: Linux
  1. Section I. Overview of InfoScale solutions used in Linux virtualization
    1. Overview of supported products and technologies
      1.  
        Overview of the InfoScale Virtualization Guide
      2. About InfoScale support for Linux virtualization environments
        1.  
          About SmartIO in the Linux virtualized environment
        2.  
          About the SmartPool feature
      3. About KVM technology
        1.  
          Kernel-based Virtual Machine Terminology
        2.  
          VirtIO disk drives
      4.  
        About InfoScale deployments in OpenShift Virtualization environments
      5.  
        About InfoScale deployments in OpenStack environments
      6.  
        Virtualization use cases addressed by InfoScale
      7.  
        About virtual-to-virtual (in-guest) clustering and failover
  2. Section II. Implementing a basic KVM environment
    1. Getting started with basic KVM
      1.  
        Creating and launching a kernel-based virtual machine (KVM) host
      2.  
        RHEL-based KVM installation and usage
      3.  
        Setting up a kernel-based virtual machine (KVM) guest
      4.  
        About setting up KVM with InfoScale solutions
      5. InfoScale solutions configuration options for the kernel-based virtual machines environment
        1.  
          Dynamic Multi-Pathing in the KVM guest virtualized machine
        2.  
          DMP in the KVM host
        3.  
          SF in the virtualized guest machine
        4.  
          Enabling I/O fencing in KVM guests
        5.  
          SFCFSHA in the KVM host
        6.  
          DMP in the KVM host and guest virtual machine
        7.  
          DMP in the KVM host and SFHA in the KVM guest virtual machine
        8.  
          VCS in the KVM host
        9.  
          VCS in the guest
        10.  
          VCS in a cluster across virtual machine guests and physical machines
      6.  
        Installing InfoScale in a KVM environment
      7. Installing and configuring VCS in a kernel-based virtual machine (KVM) environment
        1.  
          How VCS manages virtual machine guests
    2. Configuring KVM resources
      1.  
        About KVM resources
      2. Configuring storage
        1.  
          Consistent storage mapping in the KVM environment
        2. Mapping devices to the guest
          1.  
            Mapping DMP meta-devices
          2.  
            Consistent naming across KVM Hosts
          3.  
            Mapping devices using paths
          4.  
            Mapping devices using volumes
          5.  
            Mapping devices using the virtio-scsi interface
        3.  
          Resizing devices
      3. Configuring networking
        1. Bridge network configuration
          1.  
            Host network configuration
          2.  
            Configuring guest network
        2.  
          Network configuration for VCS cluster across physical machines (PM-PM)
        3.  
          Standard bridge configuration
        4.  
          Network configuration for VM-VM cluster
  3. Section III. Implementing InfoScale an OpenStack environment
    1. Installing and configring resources in an OpenStack environment
      1.  
        About installing and configuring the OpenStack environment
      2.  
        About installing and configuring InfoScale on OpenStack VMs
  4. Section IV. Implementing Linux virtualization use cases
    1. Application visibility and device discovery
      1.  
        About storage to application visibility using InfoScale Operations Manager
      2.  
        About KVM virtualization discovery in InfoScale Operations Manager
      3.  
        About Microsoft Hyper-V virtualization discovery
      4.  
        Virtual machine discovery in Microsoft Hyper-V
      5.  
        Storage mapping discovery in Microsoft Hyper-V
    2. Server consolidation
      1.  
        Server consolidation
      2.  
        Implementing server consolidation for a simple workload
    3. Physical to virtual migration
      1.  
        Physical to virtual migration
      2.  
        How to implement physical to virtual migration (P2V)
    4. Simplified management
      1.  
        Simplified management
      2. Provisioning storage for a guest virtual machine
        1.  
          Provisioning VxVM volumes as data disks for VM guests
        2.  
          Provisioning VxVM volumes as boot disks for guest virtual machines
      3. Boot image management
        1.  
          Creating the boot disk group
        2.  
          Creating and configuring the golden image
        3.  
          Rapid Provisioning of virtual machines using the golden image
        4.  
          Storage Savings from space-optimized snapshots
    5. Application availability using Cluster Server
      1.  
        About application availability options
      2.  
        Cluster Server in a KVM environment architecture summary
      3.  
        Virtual to Virtual clustering and failover
      4.  
        I/O fencing support for Virtual to Virtual clustering
      5.  
        Virtual to Physical clustering and failover
      6.  
        Recommendations for improved resiliency of InfoScale clusters in virtualized environments
    6. Virtual machine availability
      1.  
        About virtual machine availability options
      2.  
        VCS in host monitoring the Virtual Machine as a resource
      3.  
        Validating the virtualization environment for virtual machine availability
    7. Virtual machine availability for live migration
      1.  
        About live migration
      2.  
        Live migration requirements
      3. About Flexible Storage Sharing
        1.  
          Flexible Storage Sharing use cases
        2.  
          Limitations of Flexible Storage Sharing
      4.  
        Configure Storage Foundation components as backend storage for virtual machines
      5.  
        Implementing live migration for virtual machine availability
    8. Virtual to virtual clustering in a Hyper-V environment
      1.  
        Installing and configuring Cluster Server with Microsoft Hyper-V virtual-to-virtual clustering
    9. Virtual to virtual clustering in an OVM environment
      1.  
        Installing and configuring Cluster Server for Oracle Virtual Machine (OVM) virtual-to-virtual clustering
      2.  
        Storage configuration for VCS support in Oracle Virtual Machine (OVM)
    10. Multi-tier business service support
      1.  
        About Virtual Business Services
      2.  
        Sample virtual business service configuration
      3. Recovery of Multi-tier Applications managed with Virtual Business Services in InfoScale Operations Manager
        1.  
          Service Group Management in Virtual Business Services
    11. Managing Docker containers with InfoScale Enterprise
      1.  
        About managing Docker containers with InfoScale Enterprise
      2. About the Cluster Server agents for Docker, Docker Daemon, and Docker Container
        1.  
          Supported software
        2.  
          How the agents make Docker containers highly available
        3.  
          Documentation reference
      3. Managing storage capacity for Docker containers
        1.  
          Provisioning storage for Docker infrastructure from the Arctera File System
        2. Provisioning data volumes for Docker containers
          1.  
            Provisioning storage on Arctera File System as data volumes for containers
          2.  
            Provisioning VxVM volumes as data volumes for containers
          3.  
            Creating a data volume container
        3. Automatically provision storage for Docker Containers
          1.  
            Installing the InfoScale Docker volume plugin
          2.  
            Configuring a disk group
          3.  
            Creating Docker containers with storage attached automatically
          4.  
            Avoid noisy neighbor problem by using Quality of Service support
          5.  
            Provision to create snapshots
          6.  
            Configuring Veritas volume plugin with Docker 1.12 Swarm mode
        4.  
          About using InfoScale Enterprise features to manage storage for containers
      4. Offline migration of Docker containers
        1.  
          Migrating Docker containers
        2.  
          Migrating Docker Daemons and Docker Containers
      5. Disaster recovery of volumes and file systems in Docker environments
        1.  
          Configuring Docker containers for disaster recovery
      6.  
        Limitations while managing Docker containers
  5. Section V. Reference
    1. Appendix A. Troubleshooting
      1.  
        InfoScale logs for CFS configurations in OpenStack environments
      2.  
        UDID mismatch in a CFS cluster in an OpenStack environment
      3.  
        Troubleshooting virtual machine live migration
      4.  
        The KVMGuest resource may remain in the online state even if storage connectivity to the host is lost
      5.  
        VCS initiates a virtual machine failover if a host on which a virtual machine is running loses network connectivity
    2. Appendix B. Sample configurations
      1. Sample configuration for a KVM environment
        1.  
          Sample configuration 1: Native LVM volumes are used to store the guest image
        2.  
          Sample configuration 2: VxVM volumes are used to store the guest image
        3.  
          Sample configuration 3: CVM-CFS is used to store the guest image
      2.  
        Sample configurations for OpenStack environments
    3. Appendix C. Where to find more information
      1.  
        InfoScale documentation
      2.  
        Linux virtualization documentation
      3.  
        Service and support
      4.  
        About Services and Operations Readiness Tools (SORT)

How to implement physical to virtual migration (P2V)

Migrating data from a physical server to a virtualized guest, the LUNs are first physically connected to the host, and then the LUNs are mapped in KVM from the host to the guest.

This use case procedure is very similar to the server consolidation use case and the procedures are quite similar. Physical to virtual migration is the process used to achieve server consolidation.

This use case requires Storage Foundation HA or Storage Foundation Cluster File System HA in the KVM host and Storage Foundation in the KVM guest. For setup information:

See Installing InfoScale in a KVM environment.

The options are as follows:

  • If InfoScale products are installed on both the physical server and the virtual host, identifying the LUNs which need mapping is made easy. Once the LUNs are connected to the virtual host, 'vxdisk - o alldgs list' can be used to identify the devices in the disk group which require mapping.

  • If InfoScale products are not installed on the virtual host and the physical server is a Linux system, the devices which need mapping can be identified by using the device IDs on the physical server.

To implement physical to virtual migration with Storage Foundation in the host and guest (KVM-only)

  1. Find the Linux device IDs of the devices which need mapping.
    # vxdg list diskgroup
  2. For each disk in the disk group:
    # vxdmpadm getsubpaths dmpnodename=device
# ls -al /dev/disk/by-id/* | grep subpath

If Storage Foundation is not installed on the host, before decommissioning the physical server, identify the LUNs which require mapping by using the devices serial numbers. The LUNs can be mapped to the guest using the persistent "by-path" device links.

To implement physical to virtual migration if Storage Foundation is not installed in the host (KVM-only)

  1. On the physical server, identify the LUNs which must be mapped on the KVM host using the udevadm command.
  2. Map the LUNs to the virtualization host.

    The udev database can be used to identify the devices on the host which need to be mapped.

    # udevadm info --export-db | grep '/dev/disk/by-path' | \
																	cut -d' ' -f4 

/dev/disk/by-path/pci-0000:05:00.0-fc-0x5006016239a01884-lun-1
/dev/disk/by-path/pci-0000:05:00.0-fc-0x5006016239a01884-lun-2

    Map the LUNs to the guest. As there are multiple paths in this example, the paths sym-link can be used to ensure consistent device mapping for all four paths.

    # virsh attach-disk guest1 \
/dev/disk/by-path/pci-0000:05:00.0-fc-0x5006016239a01884-lun-1 \
      vdb
# virsh attach-disk guest1 \
/dev/disk/by-path/pci-0000:05:00.0-fc-0x5006016239a01884-lun-2 \
      vdc
  3. Verify that the devices are correctly mapped to the guest. The configuration changes can be made persistent by redefining the guest.
    # virsh dumpxml guest1 > /tmp/guest1.xml
# virsh define /tmp/guest1.xm

To implement physical to virtual migration with Storage Foundation in the guest and host (KVM-only)

  1. Map the LUNs to the virtualization host.
  2. On the virtualization host, identify the devices which require mapping. For example, the devices with the disk group data_dg are mapped to guest1.
    # vxdisk -o alldgs list |grep data_dg
3pardata0_1  auto:cdsdisk    -            (data_dg)    online
3pardata0_2  auto:cdsdisk    -            (data_dg)    online
  3. Map the devices to the guest.
    # virsh attach-disk guest1 /dev/vx/dmp/3pardata0_1 vdb
Disk attached successfully

# virsh attach-disk guest1 /dev/vx/dmp/3pardata0_2 vdc
Disk attached successfully
  4. In the guest, verify that all devices are correctly mapped and that the disk group is available.
    # vxdisk scandisks
# vxdisk -o alldgs list |grep data_dg
3pardata0_1  auto:cdsdisk    -            (data_dg)    online
3pardata0_2  auto:cdsdisk    -            (data_dg)    online
  5. In the virtualization host make the mapping persistent by redefining the guest:
    # virsh dumpxml guest1 > /tmp/guest1.xml
# virsh define /tmp/guest1.xml

To use an InfoScale Volume Manager (VxVM) volume as a boot device when configuring a new virtual machine

  1. Follow the recommended steps in your Linux virtualization documentation to install and boot a VM guest.

    When requested to select managed or existing storage for the boot device, use the full path to the VxVM storage volume block device, for example /dev/vx/dsk/boot_dg/bootdisk-vol.

  2. If using the virt-install utility, enter the full path to the VxVM volume block device with the --disk parameter, for example, --disk path=/dev/vx/dsk/boot_dg/bootdisk-vol.