Veritas InfoScale™ 8.0 Virtualization Guide - Linux

Last Published:
Product(s): InfoScale & Storage Foundation (8.0)
Platform: Linux
  1. Section I. Overview of Veritas InfoScale Solutions used in Linux virtualization
    1. Overview of supported products and technologies
      1.  
        Overview of the Veritas InfoScale Products Virtualization Guide
      2. About Veritas InfoScale Solutions support for Linux virtualization environments
        1.  
          About SmartIO in the Linux virtualized environment
        2.  
          About the SmartPool feature
      3. About Kernel-based Virtual Machine (KVM) technology
        1.  
          Kernel-based Virtual Machine Terminology
        2.  
          VirtIO disk drives
      4. About the RHEV environment
        1.  
          RHEV terminology
      5.  
        Virtualization use cases addressed by Veritas InfoScale products
      6.  
        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 Veritas InfoScale Solutions
      5. Veritas InfoScale Solutions configuration options for the kernel-based virtual machines environment
        1.  
          Dynamic Multi-Pathing in the KVM guest virtualized machine
        2.  
          Dynamic Multi-Pathing in the KVM host
        3.  
          Storage Foundation in the virtualized guest machine
        4.  
          Enabling I/O fencing in KVM guests
        5.  
          Storage Foundation Cluster File System High Availability in the KVM host
        6.  
          Dynamic Multi-Pathing in the KVM host and guest virtual machine
        7.  
          Dynamic Multi-Pathing in the KVM host and Storage Foundation HA in the KVM guest virtual machine
        8.  
          Cluster Server in the KVM host
        9.  
          Cluster Server in the guest
        10.  
          Cluster Server in a cluster across virtual machine guests and physical machines
      6.  
        Installing Veritas InfoScale Solutions in the kernel-based virtual machine environment
      7. Installing and configuring Cluster Server in a kernel-based virtual machine (KVM) environment
        1.  
          How Cluster Server (VCS) manages Virtual Machine (VM) guests
    2. Configuring KVM resources
      1.  
        About kernel-based virtual machine 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 Linux virtualization use cases
    1. Application visibility and device discovery
      1.  
        About storage to application visibility using Veritas InfoScale Operations Manager
      2.  
        About Kernel-based Virtual Machine (KVM) virtualization discovery in Veritas InfoScale Operations Manager
      3.  
        About Red Hat Enterprise Virtualization (RHEV) virtualization discovery in Veritas InfoScale Operations Manager
      4.  
        About Microsoft Hyper-V virtualization discovery
      5.  
        Virtual machine discovery in Microsoft Hyper-V
      6.  
        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 Veritas Volume Manager volumes as data disks for VM guests
        2.  
          Provisioning Veritas Volume Manager 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.  
        VCS in host to provide the Virtual Machine high availability and ApplicationHA in guest to provide application high availability
      4.  
        Virtual to Virtual clustering and failover
      5.  
        I/O fencing support for Virtual to Virtual clustering
      6.  
        Virtual to Physical clustering and failover
      7.  
        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.  
        Reduce SAN investment with Flexible Shared Storage in the RHEV environment
      4. About Flexible Storage Sharing
        1.  
          Flexible Storage Sharing use cases
        2.  
          Limitations of Flexible Storage Sharing
      5.  
        Configure Storage Foundation components as backend storage for virtual machines
      6.  
        Implementing live migration for virtual machine availability
    8. Virtual to virtual clustering in a Red Hat Enterprise Virtualization environment
      1.  
        Installing and configuring Cluster Server for Red Hat Enterprise Virtualization (RHEV) virtual-to-virtual clustering
      2.  
        Storage configuration for VCS in a RHEV environment
    9. Virtual to virtual clustering in a Microsoft Hyper-V environment
      1.  
        Installing and configuring Cluster Server with Microsoft Hyper-V virtual-to-virtual clustering
    10. Virtual to virtual clustering in a Oracle Virtual Machine (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)
    11. Disaster recovery for virtual machines in the Red Hat Enterprise Virtualization environment
      1.  
        About disaster recovery for Red Hat Enterprise Virtualization virtual machines
      2.  
        DR requirements in an RHEV environment
      3. Disaster recovery of volumes and file systems using Volume Replicator (VVR) and Veritas File Replicator (VFR)
        1.  
          Why select VVR over array-based replication solutions
      4.  
        Configure Storage Foundation components as backend storage
      5.  
        Configure VVR and VFR in VCS GCO option for replication between DR sites
      6.  
        Configuring Red Hat Enterprise Virtualization (RHEV) virtual machines for disaster recovery using Cluster Server (VCS)
    12. 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 Veritas Operations Manager
        1.  
          Service Group Management in Virtual Business Services
    13. Managing Docker containers with InfoScale Enterprise
      1.  
        About managing Docker containers with InfoScale Enterprise product
      2. About the Cluster Server agents for Docker, Docker Daemon, and Docker Container
        1.  
          Supported software
        2.  
          How the agents makes Veritas highly available
        3.  
          Documentation reference
      3. Managing storage capacity for Docker containers
        1.  
          Provisioning storage for Docker infrastructure from the Veritas File System
        2. Provisioning data volumes for Docker containers
          1.  
            Provisioning storage on Veritas 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 Veritas 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
  4. Section IV. Reference
    1. Appendix A. Troubleshooting
      1.  
        Troubleshooting virtual machine live migration
      2.  
        Live migration storage connectivity in a Red Hat Enterprise Virtualization (RHEV) environment
      3.  
        Troubleshooting Red Hat Enterprise Virtualization (RHEV) virtual machine disaster recovery (DR)
      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
      6.  
        Virtual machine start fails due to having the wrong boot order in RHEV environments
      7.  
        Virtual machine hangs in the wait_for_launch state and fails to start in RHEV environments
      8.  
        VCS fails to start a virtual machine on a host in another RHEV cluster if the DROpts attribute is not set
      9.  
        Virtual machine fails to detect attached network cards in RHEV environments
      10.  
        The KVMGuest agent behavior is undefined if any key of the RHEVMInfo attribute is updated using the -add or -delete options of the hares -modify command
      11.  
        RHEV environment: If a node on which the VM is running panics or is forcefully shutdown, VCS is unable to start the VM on another node
    2. Appendix B. Sample configurations
      1. Sample configuration in 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 a Red Hat Enterprise Virtualization (RHEV) environment
    3. Appendix C. Where to find more information
      1.  
        Veritas InfoScale documentation
      2.  
        Linux virtualization documentation
      3.  
        Service and support
      4.  
        About Veritas Services and Operations Readiness Tools (SORT)

Resizing devices

Red Hat Linux Enterprise (RHEL) 6.3, 6.4, 6.5, and 7 and SUSE Linux Enterprise Server (SLES) 11 SP2 and SP3 do not support online disk re-sizing of VirtIO devices. To re-size a VirtIO device, the guest must be fully shut down and re-started.

You can use the following methods to resize the devices.

To grow devices

  1. Grow the storage.

    • If the storage device is a VxVM Volume, re-size the volume.

    • If the storage device is a LUN from a storage array, re-size the device on the array.

  2. Update the size of the disk device in the host.

    • Stop all virtual machines using the storage device.

    • If the device is a LUN from a storage array, update the size of the device:

      # blockdev --rereadpt device

    • Restart the virtual machines.

  3. Update the size of the storage device in the guest .

    • If VxVM is managing the storage in the guest, use the vxdisk resize command.

    • If VxVM is not managing the storage in the guest, see the appropriate documentation.

To shrink devices

  1. Update the size of the disk device in the guest.

    • If VxVM is managing the device in the guest, if necessary, first use the vxresize utility to shrink any file systems and volumes which are using the device. Use the vxresize utility to update the size of the public region of the device:

      # vxdisk resize access_name length=new_size

    • If VxVM is not managing the storage in the guest, see the appropriate documentation.

  2. Shrink the storage in the guest.

    • If the device is a VxVM volume, shrink the volume with the vxassist utility.

    • If the device is a LUN from a storage array, shrink the device on storage array.

  3. Update the size of the disk device in the host.

    • Stop the guests which are using the devices.

    • If the device is a LUN from a storage array, use the following command:

      # blockdev --rereadpt device
  4. Start the guests.