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HP-UX Logical Volume Manager (LVM)

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At a glance
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Course number H6285S
Length 4 days
Delivery method* Virtual Instructor-Led Training (VILT)
Instructor-led training (ILT)
Onsite dedicated training (OST)
Price USD $3,200
CAD $3,520
*Courses are supported in the delivery formats above, but are not necessarily scheduled in every delivery format listed. Please click the schedule links at the top of the page to see which delivery formats are currently scheduled.

Course overview

This course covers the procedures necessary for setting up and managing the HP-UX disk subsystem using Logical Volume Manager (LVM). You will also gain experience with MirrorDisk/UX using various recovery techniques to provide data redundancy and protection against possible disk failure. The course is 50 percent lecture and 50 percent hands-on labs using HP servers.


Prerequisites

  • HP-UX system and network administration I (H3064S) and HP-UX System and Network Administration II (H3065S) or
  • HP-UX for experienced UNIX system administrators (H5875S)

Audience

  • Experienced HP-UX system administrators

Ways to save

Course objectives

At the conclusion of this course, you will be able 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

Benefits to you

Gain the skills required to:
  • Effectively manage LVM disks, disk groups, and volumes
  • Mirror LVM data and boot disks to improve uptime and reliability
  • Replace failed LVM data and boot disks
  • Prepare you to attend HP Serviceguard I (H6487S) as HP-UX Logical Volume Manager (H6285S) is a critical prerequisite

Next steps

Course outline

Introduction to 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

Disk array & 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 lunpath hardware addresses
  • Agile View FC LUN hardware addresses
  • Agile View persistent DSFs
  • Viewing Agile View hardware addresses and DSFs
  • Viewing an HBA's lunpaths via Agile View
  • Viewing a LUN's WWID and LUN ID via Agile View
  • Viewing a LUN's WWID and lunpaths via Agile View
  • Selecting a path load balancing policy
  • Monitoring HBA, LUN, and lunpath usage
  • Monitoring HB, LUN, and lunpath health
  • Enabling and disabling LUNs and lunpaths

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

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

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

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

Creating and Managing Striped and Distributed Logical Volumes

  • Striped logical volumes
  • Striped logical volume advantages and disadvantages
  • Configuring non-mirrored striped logical volumes
  • Striped versus distributed logical volumes
  • Creating a non-mirrored distributed logical volume
  • Creating a mirrored distributed logical volume
  • Configuring /etc/lvmpvg for distributed logical volumes

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

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

Monitoring and Tuning LVM Performance

  • LVM performance considerations
  • Balancing workloads: concepts and symptoms
  • Balancing workloads: overriding the default allocation policy
  • Balancing workloads: striping logical volumes
  • Balancing workloads: 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

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
  • Failed disks: symptoms reported in syslog.log
  • Failed disks: symptoms reported by EMS
  • Failed disks: symptoms reported in vgdisplay
  • Failed disks: 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

Managing volume group attributes

  • LVMv1 attribute concepts & limits
  • LVMv2 attribute concepts & limits
  • Managing LVMv1 attributes with vgmodify
  • Managing LVMv2 attributes with vgmodify
  • Expanding & contracting LUNs offline with vgmodify
  • Expanding & contracting LUNs online with vgmodify
  • Upgrading and downgrading volume grousp with vgversion

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

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

Self study appendix: Configuring and managing PV links

  • PV link overview
  • Configuring PV links
  • Viewing, adding, and removing PV links
  • PV link switchover
  • PV link switchback
  • Configuring autoswitch behavior
  • Switching links manually
  • Optimizing PV links
  • Configuring PV links with SecurePath

Self study appendix: Quiescing volume groups for use in snapshot LUNs

  • Snapshot concepts
  • Creating a snapshot
  • Recognizing a snapshot
  • Resolving duplicate VGIDs
  • Importing a snapshot volume group
  • Exporting a snapshot volume group

Self study appendix: Creating and managing DRD clones

  • DRD concepts
  • Using DRD clones to minimize planned and unplanned downtime
  • Installing DRD
  • Using the DRD command
  • Creating a DRD clone
  • Synchronizing a DRD clone
  • Verifying a DRD clone's status
  • Managing software via DRD-safe commands
  • Managing kernel tunables via DRD safe commands
  • Accessing images via other commands
  • Activating an inactive DRD image

Self study appendix: Creating and managing logical volume snapshots

  • Snapshot concepts
  • Snapshot data sharing concepts
  • Data unsharing unit concepts
  • Fully allocated snapshot concepts
  • Space efficient snapshot concepts
  • Creating a volume group to accommodate snapshot volumes
  • Creating a fully allocated snapshot
  • Creating a space efficient snapshot
  • Removing snapshots and volumes
  • Snapshot Limitations
  • Snapshot volumes vs. split logical volume mirrors

H6285S I.01
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