EncartaLabs

HP-UX Logical Volume Manager (LVM)

( Duration: 4 Days )

In HP-UX Logical Volume Manager (LVM) training course, Participants will cover the procedures necessary for setting up and managing the HP-UX disk subsystem using Logical Volume Manager (LVM). They will gain experience with MirrorDisk/UX using various recovery techniques to provide data redundancy and protection against possible disk failure.

By attending HP-UX Logical Volume Manager (LVM) workshop, Participants will learn to:

  • Configure and manage LVM disks, disk groups, and logical volumes
  • Configure striped, mirrored, and distributed logical volumes
  • Configure LVM for optimal performance
  • Recover failed LVM disks and volumes
  • Mirror LVM data and boot disks to improve uptime and reliability
  • Replace failed LVM data and boot disks

  • Experience with HP-UX System and Network Administration

  • Experienced HP-UX system administrators

COURSE AGENDA

1

Disk Space Management and LVM

  • Disk Space Management Solutions
  • Whole Disk Benefits and Limitations
  • LVM Benefits and Limitations
  • LVM Resources
  • Disk Space Management Solution Comparison
2

Disk Array and SAN Concepts and Addressing

  • Disk Array Concepts
  • LUN Concepts
  • RAID Concepts
  • RAID 0, RAID 1, RAID 1+0, and RAID 0+1 Concepts
  • RAID 3, RAID 5, and RAID 5DP Concepts
  • RAID Levels and LVM
  • SAN and Multipathing Concepts
  • Hardware Address Concepts
  • Legacy vs. Agile View Hardware Addresses
  • Legacy Parallel SCSI Hardware Addresses
  • Legacy FC Hardware Addresses
  • Legacy DSF Names
  • Viewing Legacy Hardware Addresses and DSFs
  • Agile View SCSI Hardware Addresses
  • Agile View FC LUN Path Hardware Addresses
  • Agile View FC LUN Hardware Addresses
  • Agile View Persistent DSFs
  • Viewing Agile View Hardware Addresses and DSFs
  • Viewing an HBA's L LUN Paths via Agile View
  • Viewing a LUN's WWID and LUN ID via Agile View
  • Viewing a LUN's WWID and LUN Paths via Agile View
  • Selecting a Path Load Balancing Policy
  • Monitoring HBA, LUN, and LUN Path Usage
  • Monitoring HB, LUN, and LUN Path Health
  • Enabling and Disabling LUNs and LUN Paths
3

LVM Concepts and Structures

  • LVM Objects
  • LVM Physical Volumes, Volume Groups, and Logical Volumes
  • LVM DSF Directories and DSFs
  • LVM Extents and Extent Sizes
  • LVM Extent Allocation
  • LVM PVRA, VGRA, and BBRA Areas
  • LVM Kernel Structures and Volume Group Activation
  • LVM Activation Quorum
  • LVM Running Quorum
  • LVMv1.0 and v2.x Limits
4

Creating and Managing Volume Groups and Logical Volumes

  • Identifying Available Disks
  • Creating Physical Volumes
  • Creating Volume Groups
  • Creating Logical Volumes
  • Viewing Groups and Volumes
  • Extending, Reducing, and Removing Volume Groups
  • Extending, Reducing, and Removing Logical Volumes
  • Extending and Reducing File Systems
  • Removing Physical Volumes
  • Activating and Deactivating Volume Groups
  • LVM basic Command Summary
5

Configuring and Managing Mirrored Logical Volumes

  • Mirroring Concepts
  • Installing MirrorDisk/UX
  • Mirroring Logical Volumes
  • Viewing Logical Volumes
  • Unmirroring Logical Volumes
  • Synchronizing Mirrors
  • Splitting and Merging Mirrors for On-Host and Off-Host Backups
  • Configuring Spare Physical Volumes
6

Configuring and Managing Mirroring Policies

  • Mirroring Policy Concepts
  • Mirror Scheduling Policy Concepts
  • Choosing and Configuring an Appropriate Mirror Scheduling Policy
  • Mirror Consistency Recovery Policy Concepts
  • Choosing and Configuring an Appropriate Consistency Recovery Policy
  • Mirror Allocation Policy Concepts
  • Choosing and Configuring an Appropriate Mirror Allocation Policy
  • Mirroring Policy Summary
7

Creating and Managing Striped and Distributed Logical Volumes

  • Striped Logical Volumes
    • Advantages
    • Disadvantages
  • Configuring Non-Mirrored Striped Logical Volumes
  • Striped vs. Distributed Logical Volumes
  • Creating a Non-Mirrored Distributed Logical Volume
  • Creating a Mirrored Distributed Logical Volume
  • Configuring /etc/lvmpvg for Distributed Logical Volumes
8

Moving Data in an LVM Environment

  • Why move extents within a volume group
  • Moving and balancing physical extents with pvmove
  • Moving and balancing logical volumes with lvmove
  • Moving logical volumes and physical extents with vgmove
9

Exporting and Importing Volume Groups

  • Volume Group Export/Import Concepts
  • Structures Affected by Physical Volume and Volume Group Moves
  • Volume Group Export/Import Commands
  • Moving Volume Groups and Physical Volumes to a Different Server
  • Moving a Physical Volume to a New Address
  • Renaming a Volume Group
  • Importing Volume Groups After Reinstalling
  • Importing Split Mirrors for Off-Host Processing
  • Exporting a Corrupted Volume Group
  • Importing Volume Groups in Serviceguard Clusters
10

Monitoring and Tuning LVM Performance

  • LVM performance considerations
  • Balancing Workloads
    • Concepts and Symptoms
    • Overriding the Default Allocation Policy
    • Striping Logical Volumes
    • Mirroring Logical Volumes
  • Minimizing Head Movement: Concepts, Symptoms, and Commands
  • Avoiding Fragmentation: Concepts, Symptoms, and Commands
  • Minimizing MWC/MCR Overhead: Concepts, Symptoms, and Commands
  • Buying Faster Disks and Interfaces
  • Updating the Operating System
  • Other Performance Factors
11

Recovering LVM Disks and Structures

  • LVM Structure Concepts
  • Recovering Lost or Damaged LVM Structures
  • Recovering Missing Device Files
  • Rebuilding a Corrupt /etc/lvmtab File
  • Refreshing Outdated Kernel Structures
  • Failed Disks
    • Symptoms Experienced by Users
    • Symptoms Reported in syslog.log
    • Symptoms Reported by EMS
    • Symptoms Reported in vgdisplay
    • Symptoms Reported in ioscan
  • Activating a Volume Group Containing Failed Disks
  • Gathering Information About Failed Disks
  • Restoring a Power-Failed Disk
  • Replacing a Failed Disk
  • Replacing a Disk with and without LVM OLR
  • Replacing LVM Headers
  • Replacing Unmirrored Logical Volumes
  • Replacing Mirrored Logical Volumes
  • Removing Failed Physical Volumes
  • Removing Corrupted Volume Groups
  • Proactively Checking PVRA/VGRA Health
  • Preparing for Disk Recovery
12

Managing Volume Group Attributes

  • LVMv1 and LVMv2 Attribute Concepts and Limits
  • Managing LVMv1 and LVMv2 Attributes with vgmodify
  • Expanding and Contracting LUNs Offline And Online with vgmodify
  • Upgrading and Downgrading Volume grousp with vgversion
13

Configuring and Managing LVM Boot Disks on PA-RISC Servers

  • PA-RISC Boot Process Structures, Concepts, and Restrictions
  • Booting without LVM Quorum
  • Booting to LVM Maintenance Mode
  • PA-RISC Boot Disk Mirroring Concepts
  • Mirroring an Integrity Boot Disk
  • Replacing a Failed Integrity Boot Mirror
  • Creating and Updating a DRD Clone
  • Creating a PA-RISC Make_*_Recovery Archive
  • Resizing PA-RISC Boot Disk Logical Volumes
14

Configuring and Managing LVM Boot Disks on Integrity Servers

  • Integrity Boot Process Structures, Concepts, and Restrictions
  • Booting without LVM Quorum
  • Booting to LVM Maintenance Mode
  • Integrity Boot Disk Mirroring Concepts
  • Mirroring an Integrity Boot Disk
  • Replacing a Failed Integrity Boot Mirror
  • Creating and Updating a DRD Clone
  • Creating an Integrity Make_*_Recovery Archive
  • Resizing Integrity Boot Disk Logical Volumes

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