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Introduction to disk space management and LVM
- Disk space management concepts
- Whole disk benefits and limitations
- LVM benefits and limitations
- LVM resources
- Disk space management solution comparison
- Disk space management solution coexistence
- VxVM benefits and limitations
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
Creating and Managing Volume Groups and Logical Volumes
- Identifying available disks
- Creating physical volumes and setting
physical volume options
- Creating volume groups and setting volume
group options
- Creating logical volumes and setting logical
volume options
- Viewing volume groups, physical volumes,
and logical 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
- Using logical volumes
- 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 versus non-striped 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
Moving data in an LVM environment
- Moving logical volumes within a volume
group
- Moving volume groups and physical volumes
- Structures affected by physical volume and
volume group moves
- Renaming a volume group and logical volume
- Importing volume groups after reinstalling
- Importing split mirrors for off-host processing
- Importing volume groups in a Serviceguard
cluster
- Exporting a corrupted volume group
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 failed disk: Replacing a disk with
and without LVM OLR
- Replacing a failed disk: Restoring LVM
headers
- Replacing a failed disk: Restoring unmirrored
logical volumes
- Replacing a failed disk: Restoring mirrored
logical volumes
- Removing failed physical volumes
- Removing corrupted volume groups
- Proactively checking PVRA/VGRA health
- Preparing for disk recovery
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
- Other performance factors
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
- DRD concepts
- Creating and updating a DRD clone
- Activating an inactive DRD image
- Backing up a PA-RISC boot disk with
make_*_recovery
- Booting from a make_net_recovery archive
- Booting from a make_tape_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
- DRD concepts
- Creating and updating a DRD clone
- Activating an inactive DRD image
- Backing up a Integrity boot disk with
make_*_recovery
- Booting from a make_net_recovery archive
- Booting from a make_tape_recovery archive
- Resizing Integrity boot disk logical volumes
Managing volume group attributes
- Volume group attribute concepts
- Volume group attribute limitations
- Changing volume group attributes with
vgmodify
- Changing attributes without resizing the
VGRA
- Extending the VGRA by removing the boot
area
- Extending the VGRA by renumbering physical
extents
- Checking prerequisites
- Determining optimal attributes
- Moving physical extent 0
- Reviewing proposed changes
- Applying proposed changes
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 /etc/lvmtab file and volume group
activation
- LVM activation and running quorum
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 unplanned
downtime
- Installing DRD
- Using the DRD command
- Creating and updating a DRD clone
- Accessing inactive images via DRD-safe
commands
- Accessing images via other commands
- Activating an inactive DRD image
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