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InfoScale™ 9.0 Storage Foundation Cluster File System High Availability Administrator's Guide - Linux
Last Published:
2025-04-14
Product(s):
InfoScale & Storage Foundation (9.0)
Platform: Linux
- Section I. Introducing Storage Foundation Cluster File System High Availability
- Overview of Storage Foundation Cluster File System High Availability
- About Storage Foundation Cluster File System High Availability
- About Dynamic Multi-Pathing (DMP)
- About Volume Manager
- About Veritas File System
- About Storage Foundation Cluster File System (SFCFS)
- About InfoScale Operations Manager
- About Veritas Replicator
- Use cases for Storage Foundation Cluster File System High Availability
- How Dynamic Multi-Pathing works
- How Volume Manager works
- How Volume Manager works with the operating system
- How Volume Manager handles storage management
- Volume layouts in Veritas Volume Manager
- Online relayout
- Volume resynchronization
- Hot-relocation
- Dirty region logging
- Volume snapshots
- Support for atomic writes
- FastResync
- Volume sets
- How VxVM handles hardware clones or snapshots
- Volume encryption
- How Veritas File System works
- How Storage Foundation Cluster File System High Availability works
- How Storage Foundation Cluster File System High Availability works
- When to use Storage Foundation Cluster File System High Availability
- About Storage Foundation Cluster File System High Availability architecture
- About Veritas File System features supported in cluster file systems
- About Cluster Server architecture
- About the Storage Foundation Cluster File System High Availability namespace
- About asymmetric mounts
- About primary and secondary cluster nodes
- Determining or moving primaryship
- About synchronizing time on Cluster File Systems
- About file system tunables
- About setting the number of parallel fsck threads
- Storage Checkpoints
- About Storage Foundation Cluster File System High Availability backup strategies
- About parallel I/O
- About the I/O error handling policy for Cluster Volume Manager
- About recovering from I/O failures
- About single network link and reliability
- Split-brain and jeopardy handling
- About I/O fencing
- About I/O fencing for SFCFSHA in virtual machines that do not support SCSI-3 PR
- About preventing data corruption with I/O fencing
- About I/O fencing components
- About I/O fencing configuration files
- How I/O fencing works in different event scenarios
- About server-based I/O fencing
- About secure communication between the SFCFSHA cluster and CP server
- Storage Foundation Cluster File System High Availability and Veritas Volume Manager cluster functionality agents
- Veritas Volume Manager cluster functionality
- How Cluster Volume Manager works
- About the cluster functionality of VxVM
- Overview of clustering
- Cluster Volume Manager (CVM) tolerance to storage connectivity failures
- Availability of shared disk group configuration copies
- About redirection of application I/Os with CVM I/O shipping
- Storage disconnectivity and CVM disk detach policies
- About the types of storage connectivity failures
- About disk detach policies
- How CVM handles local storage disconnectivity with the global detach policy
- How CVM handles local storage disconnectivity with the local detach policy
- Guidelines for choosing detach policies
- How CVM detach policies interact with I/O shipping
- CVM storage disconnectivity scenarios that are policy independent
- Availability of cluster nodes and shared disk groups
- CVM initialization and configuration
- Dirty region logging in cluster environments
- Multiple host failover configurations
- About Flexible Storage Sharing
- Application isolation in CVM environments with disk group sub-clustering
- Overview of Storage Foundation Cluster File System High Availability
- Section II. Provisioning storage
- Provisioning new storage
- Advanced allocation methods for configuring storage
- Customizing allocation behavior
- Setting default values for vxassist
- Using rules to make volume allocation more efficient
- Understanding persistent attributes
- Customizing disk classes for allocation
- Specifying allocation constraints for vxassist operations with the use clause and the require clause
- Management of the use and require type of persistent attributes
- Creating volumes of a specific layout
- Creating a volume on specific disks
- Creating volumes on specific media types
- Configuring a Key Management Server
- Creating encrypted volumes
- Changing the KEK using the re-key operation
- Viewing encrypted volumes
- Changing the encryption password
- Enabling or disabling deletion of KEKs along with encrypted objects
- Specifying ordered allocation of storage to volumes
- Site-based allocation
- Changing the read policy for mirrored volumes
- Customizing allocation behavior
- Creating and mounting VxFS file systems
- Creating a VxFS file system
- Converting a file system to VxFS
- Mounting a VxFS file system
- log mount option
- delaylog mount option
- tmplog mount option
- logiosize mount option
- nodatainlog mount option
- blkclear mount option
- mincache mount option
- convosync mount option
- ioerror mount option
- largefiles and nolargefiles mount options
- cio mount option
- mntlock mount option
- ckptautomnt mount option
- Combining mount command options
- Unmounting a file system
- Resizing a file system
- Displaying information on mounted file systems
- Identifying file system types
- Monitoring free space
- Extent attributes
- Section III. Administering multi-pathing with DMP
- Administering Dynamic Multi-Pathing
- Discovering and configuring newly added disk devices
- Partial device discovery
- About discovering disks and dynamically adding disk arrays
- About third-party driver coexistence
- How to administer the Device Discovery Layer
- Listing all the devices including iSCSI
- Listing all the Host Bus Adapters including iSCSI
- Listing the ports configured on a Host Bus Adapter
- Listing the targets configured from a Host Bus Adapter or a port
- Listing the devices configured from a Host Bus Adapter and target
- Getting or setting the iSCSI operational parameters
- Listing all supported disk arrays
- Displaying details about an Array Support Library
- Excluding support for a disk array library
- Re-including support for an excluded disk array library
- Listing excluded disk arrays
- Listing disks claimed in the DISKS category
- Adding unsupported disk arrays to the DISKS category
- Removing disks from the DISKS category
- Foreign devices
- Making devices invisible to VxVM
- Making devices visible to VxVM
- About enabling and disabling I/O for controllers and storage processors
- About displaying DMP database information
- Displaying the paths to a disk
- Administering DMP using the vxdmpadm utility
- Retrieving information about a DMP node
- Displaying consolidated information about the DMP nodes
- Displaying the members of a LUN group
- Displaying paths controlled by a DMP node, controller, enclosure, or array port
- Displaying information about controllers
- Displaying information about enclosures
- Displaying information about array ports
- Displaying information about devices controlled by third-party drivers
- Displaying extended device attributes
- Suppressing or including devices from VxVM control
- Gathering and displaying I/O statistics
- Setting the attributes of the paths to an enclosure
- Displaying the redundancy level of a device or enclosure
- Specifying the minimum number of active paths
- Displaying the I/O policy
- Specifying the I/O policy
- Disabling I/O for paths, controllers, array ports, or DMP nodes
- Enabling I/O for paths, controllers, array ports, or DMP nodes
- Renaming an enclosure
- Configuring the response to I/O failures
- Configuring the I/O throttling mechanism
- Configuring Low Impact Path Probing (LIPP)
- Configuring Subpaths Failover Groups (SFG)
- Displaying recovery option values
- Configuring DMP path restoration policies
- Stopping the DMP path restoration thread
- Displaying the status of the DMP path restoration thread
- Configuring Array Policy Modules
- Configuring latency threshold tunable for metro/geo array
- Discovering and configuring newly added disk devices
- Dynamic Reconfiguration of devices
- About online dynamic reconfiguration
- Reconfiguring a LUN online that is under DMP control using the Dynamic Reconfiguration tool
- Manually reconfiguring a LUN online that is under DMP control
- Overview of manually reconfiguring a LUN
- Manually removing LUNs dynamically from an existing target ID
- Manually adding new LUNs dynamically to a new target ID
- About detecting target ID reuse if the operating system device tree is not cleaned up
- Scanning an operating system device tree after adding or removing LUNs
- Manually cleaning up the operating system device tree after removing LUNs
- Changing the characteristics of a LUN from the array side
- Upgrading the array controller firmware online
- Reformatting NVMe devices manually
- Managing devices
- Displaying disk information
- Changing the disk device naming scheme
- About disk installation and formatting
- Adding and removing disks
- Renaming a disk
- Event monitoring
- Administering Dynamic Multi-Pathing
- Section IV. Administering Storage Foundation Cluster File System High Availability
- Administering Storage Foundation Cluster File System High Availability and its components
- About Storage Foundation Cluster File System High Availability administration
- Administering CFS
- Adding CFS file systems to a VCS configuration
- Uses of cfsmount to mount and cfsumount to unmount CFS file system
- Removing CFS file systems from VCS configuration
- Resizing CFS file systems
- Verifying the status of CFS file system nodes and their mount points
- Verifying the state of the CFS port
- CFS agents and AMF support
- CFS agent log files
- CFS commands
- About the mount, fsclustadm, and fsadm commands
- Synchronizing system clocks on all nodes
- Growing a CFS file system
- About the /etc/fstab file
- When the CFS primary node fails
- About Storage Checkpoints on SFCFSHA
- About Snapshots on SFCFSHA
- Administering VCS
- Administering CVM
- Listing all the CVM shared disks
- Viewing all available disks in a cluster
- Establishing CVM cluster membership manually
- Methods to control CVM master selection
- About setting cluster node preferences for master failover
- Cluster node preference for master failover
- Considerations for setting CVM node preferences
- Setting the cluster node preference using the CVMCluster agent
- Setting the cluster node preference value for master failover using the vxclustadm command
- Example of setting the cluster node preference value for master failover
- About changing the CVM master manually
- Enabling the application isolation feature in CVM environments
- Disabling the application isolation feature in a CVM cluster
- Changing the disk group master manually
- Setting the sub-cluster node preference value for master failover
- Importing a shared disk group manually
- Deporting a shared disk group manually
- Mapping remote storage to a node in the cluster
- Removing remote storage mappings from a node in the cluster
- Starting shared volumes manually
- Evaluating the state of CVM ports
- Verifying if CVM is running in an SFCFSHA cluster
- Verifying CVM membership state
- Verifying the state of CVM shared disk groups
- Verifying the activation mode
- CVM log files
- Requesting node status and discovering the master node
- Determining if a LUN is in a shareable disk group
- Listing shared disk groups
- Creating a shared disk group
- Importing disk groups as shared
- Converting a disk group from shared to private
- Moving objects between shared disk groups
- Splitting shared disk groups
- Joining shared disk groups
- Changing the activation mode on a shared disk group
- Enabling I/O shipping for shared disk groups
- Setting the detach policy for shared disk groups
- Volume-level I/O shipping
- Enabling or disabling volume-level I/O shipping
- Controlling the CVM tolerance to storage disconnectivity
- Handling cloned disks in a shared disk group
- Creating volumes with exclusive open access by a node
- Setting exclusive open access to a volume by a node
- Displaying the cluster protocol version
- Displaying the supported cluster protocol version range
- Recovering volumes in shared disk groups
- Obtaining cluster performance statistics
- Administering CVM from the slave node
- Administering Flexible Storage Sharing
- About Flexible Storage Sharing disk support
- About the volume layout for Flexible Storage Sharing disk groups
- Setting the host prefix
- Exporting a disk for Flexible Storage Sharing
- Setting the Flexible Storage Sharing attribute on a disk group
- Using the host disk class and allocating storage
- Administering mirrored volumes using vxassist
- Displaying exported disks and network shared disk groups
- Tuning LLT for memory and performance in FSS environments
- Administering ODM
- About administering I/O fencing
- About the vxfentsthdw utility
- General guidelines for using the vxfentsthdw utility
- About the vxfentsthdw command options
- Testing the coordinator disk group using the -c option of vxfentsthdw
- Performing non-destructive testing on the disks using the -r option
- Testing the shared disks using the vxfentsthdw -m option
- Testing the shared disks listed in a file using the vxfentsthdw -f option
- Testing all the disks in a disk group using the vxfentsthdw -g option
- Testing a disk with existing keys
- About the vxfenadm utility
- About the vxfenclearpre utility
- About the vxfenswap utility
- About administering the coordination point server
- CP server operations (cpsadm)
- Adding and removing SFCFSHA cluster entries from the CP server database
- Adding and removing a SFCFSHA cluster node from the CP server database
- Adding or removing CP server users
- Listing the CP server users
- Listing the nodes in all the SFCFSHA clusters
- Listing the membership of nodes in the SFCFSHA cluster
- Preempting a node
- Registering and unregistering a node
- Enable and disable access for a user to a SFCFSHA cluster
- Starting and stopping CP server outside VCS control
- Checking the connectivity of CP servers
- Adding and removing virtual IP addresses and ports for CP servers at run-time
- Taking a CP server database snapshot
- Replacing coordination points for server-based fencing in an online cluster
- Refreshing registration keys on the coordination points for server-based fencing
- Deployment and migration scenarios for CP server
- Migrating from non-secure to secure setup for CP server and SFCFSHA cluster communication
- About migrating between disk-based and server-based fencing configurations
- Migrating from disk-based to server-based fencing in an online cluster
- Migrating from server-based to disk-based fencing in an online cluster
- Migrating between fencing configurations using response files
- Sample response file to migrate from disk-based to server-based fencing
- Sample response file to migrate from server-based fencing to disk-based fencing
- Sample response file to migrate from single CP server-based fencing to server-based fencing
- Response file variables to migrate between fencing configurations
- Enabling or disabling the preferred fencing policy
- About I/O fencing log files
- About the vxfentsthdw utility
- Administering SFCFSHA global clusters
- Enabling S3 server
- Configuring OpenStack
- Using Clustered NFS
- Understanding how Clustered NFS works
- Sample use cases
- cfsshare manual page
- Configure and unconfigure Clustered NFS
- Administering Clustered NFS
- Displaying the NFS shared CFS file systems
- Sharing a CFS file system previously added to VCS
- Unsharing the previous shared CFS file system
- Adding an NFS shared CFS file system to VCS
- Deleting the NFS shared CFS file system from VCS
- Adding a virtual IP address to VCS
- Deleting a virtual IP address from VCS
- Adding an IPv6 virtual IP address to VCS in a pure IPv6 configuration
- Deleting an IPv6 virtual IP address from VCS in a pure IPv6 configuration
- Adding a virtual IP address to VCS in a dual-stack configuration
- Deleting a virtual IP address from VCS in a dual-stack configuration
- Changing the share options associated with an NFS share
- Sharing a file system checkpoint
- Samples for configuring a Clustered NFS
- Sample main.cf file
- How to mount an NFS-exported file system on the NFS clients
- Debugging Clustered NFS
- Using Common Internet File System
- Deploying Oracle with Clustered NFS
- Administering sites and remote mirrors
- About sites and remote mirrors
- Making an existing disk group site consistent
- Configuring a new disk group as a Remote Mirror configuration
- Fire drill - testing the configuration
- Changing the site name
- Administering the Remote Mirror configuration
- Examples of storage allocation by specifying sites
- Displaying site information
- Failure and recovery scenarios
- Recovering from a loss of site connectivity
- Recovering from host failure
- Recovering from storage failure
- Recovering from site failure
- Recovering from disruption of connectivity to storage at the remote sites from hosts on all sites
- Recovering from disruption to connectivity to storage at all sites from the hosts at a site
- Automatic site reattachment
- Administering iSCSI with SFCFSHA
- Administering datastores with SFCFSHA
- Administering Storage Foundation Cluster File System High Availability and its components
- Section V. Optimizing I/O performance
- Veritas File System I/O
- Veritas Volume Manager I/O
- Veritas Volume Manager throttling of administrative I/O
- Managing application I/O workloads using maximum IOPS settings
- About application volume groups
- Creating application volume groups
- Viewing the list of application volume groups
- Setting the maximum IOPS threshold on application volume groups
- Viewing the IOPS statistics for application volume groups
- Removing the maximum IOPS setting from application volume groups
- Adding volumes to an application volume group
- Removing volumes from an application volume group
- Removing an application volume group
- Section VI. Veritas Extension for Oracle Disk Manager
- Using Veritas Extension for Oracle Disk Manager
- About Oracle Disk Manager
- About Oracle Disk Manager and Storage Foundation Cluster File System High Availability
- About Oracle Disk Manager and Oracle Managed Files
- Setting up Veritas Extension for Oracle Disk Manager
- Configuring Veritas Extension for Oracle Disk Manager
- Preparing existing database storage for Oracle Disk Manager
- Verifying that Oracle Disk Manager is configured
- Disabling the Oracle Disk Manager feature
- Using Cached ODM
- Using Veritas Extension for Oracle Disk Manager
- Section VII. Using Point-in-time copies
- Understanding point-in-time copy methods
- About point-in-time copies
- When to use point-in-time copies
- About Storage Foundation point-in-time copy technologies
- Volume-level snapshots
- Storage Checkpoints
- About FileSnaps
- About snapshot file systems
- Administering volume snapshots
- About volume snapshots
- Traditional third-mirror break-off snapshots
- Full-sized instant snapshots
- Creating instant snapshots
- Adding an instant snap DCO and DCO volume
- Creating and managing space-optimized instant snapshots
- Creating and managing full-sized instant snapshots
- Creating and managing third-mirror break-off snapshots
- Creating and managing linked break-off snapshot volumes
- Creating multiple instant snapshots
- Creating instant snapshots of volume sets
- Adding snapshot mirrors to a volume
- Removing a snapshot mirror
- Removing a linked break-off snapshot volume
- Adding a snapshot to a cascaded snapshot hierarchy
- Refreshing an instant space-optimized snapshot
- Reattaching an instant full-sized or plex break-off snapshot
- Reattaching a linked break-off snapshot volume
- Restoring a volume from an instant space-optimized snapshot
- Dissociating an instant snapshot
- Removing an instant snapshot
- Splitting an instant snapshot hierarchy
- Displaying instant snapshot information
- Controlling instant snapshot synchronization
- Listing the snapshots created on a cache
- Tuning the autogrow attributes of a cache
- Monitoring and displaying cache usage
- Growing and shrinking a cache
- Removing a cache
- Creating instant snapshots
- Linked break-off snapshots
- Cascaded snapshots
- Creating multiple snapshots
- Restoring the original volume from a snapshot
- Adding a version 0 DCO and DCO volume
- Administering Storage Checkpoints
- About Storage Checkpoints
- Storage Checkpoint administration
- Storage Checkpoint space management considerations
- Restoring from a Storage Checkpoint
- Storage Checkpoint quotas
- Administering FileSnaps
- Administering snapshot file systems
- Understanding point-in-time copy methods
- Section VIII. Optimizing storage with Storage Foundation Cluster File System High Availability
- Understanding storage optimization solutions in Storage Foundation Cluster File System High Availability
- About thin provisioning
- About thin optimization solutions in Storage Foundation Cluster File System High Availability
- About SmartMove
- About the Thin Reclamation feature
- About reclaiming space on Solid State Devices (SSDs) with the TRIM operation
- Determining when to reclaim space on a thin reclamation LUN
- How automatic reclamation works
- Migrating data from thick storage to thin storage
- Maintaining Thin Storage with Thin Reclamation
- Reclamation of storage on thin reclamation arrays
- Identifying thin and thin reclamation LUNs
- Displaying VxFS file system usage on thin reclamation LUNs
- Reclaiming space on a file system
- Reclaiming space on a disk, disk group, or enclosure
- About the reclamation log file
- Monitoring Thin Reclamation using the vxtask command
- Configuring automatic reclamation
- InfoScale 4K sector device support solution
- Understanding storage optimization solutions in Storage Foundation Cluster File System High Availability
- Section IX. Maximizing storage utilization
- Understanding storage tiering with SmartTier
- Creating and administering volume sets
- Multi-volume file systems
- About multi-volume file systems
- About volume types
- Features implemented using multi-volume file system (MVFS) support
- Creating multi-volume file systems
- Converting a single volume file system to a multi-volume file system
- Adding a volume to and removing a volume from a multi-volume file system
- Volume encapsulation
- Reporting file extents
- Load balancing
- Converting a multi-volume file system to a single volume file system
- Administering SmartTier
- About SmartTier
- Supported SmartTier document type definitions
- Placement classes
- Administering placement policies
- File placement policy grammar
- File placement policy rules
- Calculating I/O temperature and access temperature
- Multiple criteria in file placement policy rule statements
- Multiple file selection criteria in SELECT statement clauses
- Multiple placement classes in <ON> clauses of CREATE statements and in <TO> clauses of RELOCATE statements
- Multiple placement classes in <FROM> clauses of RELOCATE and DELETE statements
- Multiple conditions in <WHEN> clauses of RELOCATE and DELETE statements
- File placement policy rule and statement ordering
- File placement policies and extending files
- Using SmartTier with solid state disks
- Sub-file relocation
- Administering hot-relocation
- About hot-relocation
- How hot-relocation works
- Configuring a system for hot-relocation
- Displaying spare disk information
- Marking a disk as a hot-relocation spare
- Removing a disk from use as a hot-relocation spare
- Excluding a disk from hot-relocation use
- Making a disk available for hot-relocation use
- Configuring hot-relocation to use only spare disks
- Moving relocated subdisks
- Modifying the behavior of hot-relocation
- Compressing files
- About compressing files
- Compressing files with the vxcompress command
- Interaction of compressed files and other commands
- Interaction of compressed files and other features
- Interaction of compressed files and applications
- Use cases for compressing files
- Section X. Administering and protecting storage
- Managing volumes and disk groups
- Rules for determining the default disk group
- Moving volumes or disks
- Monitoring and controlling tasks
- Using vxnotify to monitor configuration changes
- Performing online relayout
- Adding a mirror to a volume
- Configuring SmartMove
- Removing a mirror
- Setting tags on volumes
- Encrypting existing volumes
- Managing disk groups
- Disk group versions
- Displaying disk group information
- Creating a disk group
- Removing a disk from a disk group
- Deporting a disk group
- Importing a disk group
- Handling of minor number conflicts
- Moving disk groups between systems
- Importing a disk group containing hardware cloned disks
- Setting up configuration database copies (metadata) for a disk group
- Renaming a disk group
- Handling conflicting configuration copies
- Disabling a disk group
- Destroying a disk group
- Backing up and restoring disk group configuration data
- Working with existing ISP disk groups
- Managing plexes and subdisks
- Erasure coding in Veritas InfoScale storage environments
- Using Distributed Parity
- Allocating logs on different disks
- Limitations of erasure coded volumes
- Erasure coding deployment scenarios
- I/O operations on erasure coded volumes
- Recovery of erasure coded volumes
- Relocation of faulted storage containing erasure coded volumes
- Initializing an erasure coded volume
- Resizing an erasure coded volume
- Customized failure domain
- Decommissioning storage
- Rootability
- Root Disk Encapsulation (RDE) is not supported
- Encapsulating a disk
- Device name format changes in RHEL 7 environments after encapsulation
- Rootability
- Restrictions on using rootability with Linux
- Sample supported root disk layouts for encapsulation
- Example 1: supported root disk layouts for encapsulation
- Example 2: supported root disk layouts for encapsulation
- Example 3: supported root disk layouts for encapsulation
- Example 4: supported root disk layouts for encapsulation
- Sample unsupported root disk layouts for encapsulation
- Example 1: unsupported root disk layouts for encapsulation
- Example 2: unsupported root disk layouts for encapsulation
- Example 3: unsupported root disk layouts for encapsulation
- Example 4: unsupported root disk layouts for encapsulation
- Booting root volumes
- Boot-time volume restrictions
- Creating redundancy for the root disk
- Creating an archived back-up root disk for disaster recovery
- Encapsulating and mirroring the root disk
- Upgrading the kernel on a root encapsulated system
- Administering an encapsulated boot disk
- Unencapsulating the root disk
- Quotas
- About Veritas File System quota limits
- About quota files on Veritas File System
- About Veritas File System quota commands
- About quota checking with Veritas File System
- Using Veritas File System quotas
- Turning on Veritas File System quotas
- Turning on Veritas File System quotas at mount time
- Editing Veritas File System quotas
- Modifying Veritas File System quota time limits
- Viewing Veritas File System disk quotas and usage
- Displaying blocks owned by users or groups
- Turning off Veritas File System quotas
- Support for 64-bit Quotas
- File Change Log
- Support for protection against ransomware
- About support for protection against ransomware
- Write Once, Read Many (WORM) storage
- Secure clock
- Audit logging
- Non-modifiable storage checkpoints
- Post-upgrade tasks to enable the use of non-modifiable checkpoints
- Creating non-modifiable checkpoints
- Setting retention periods for non-modifiable checkpoints
- Making an existing checkpoint non-modifiable
- Deletion of non-modifiable checkpoints
- Compatibility of WORM flag with relevant checkpoint operations
- Restrictions and limitations on the promote operation for checkpoints
- Restrictions and limitations on the mount operations
- Soft WORM storage
- About the secure configuration file
- Secure file system
- Secure file system for Oracle Single Instance
- Secure file system for PostgreSQL database
- Prerequisites for configuring SecureFS for PostgreSQL
- Enabling PostgreSQL for SecureFS and Single-Click Recovery
- SecureFS authentication methods for PostgreSQL
- PostgreSQL configuration reload and restart requirements
- Configure SecureFS for PostgreSQL using CLI
- Recovering PostgreSQL data
- PostgreSQL SecureFS configuration logs
- SecureFS limitations for PostgreSQL
- Single Click Recovery limitations for PostgreSQL
- Managing volumes and disk groups
- Section XI. Reference
- Appendix A. Reverse path name lookup
- Appendix B. Tunable parameters
- About tuning Storage Foundation Cluster File System High Availability
- Tuning the VxFS file system
- DMP tunable parameters
- Methods to change Dynamic Multi-Pathing tunable parameters
- Tunable parameters for VxVM
- Methods to change Veritas Volume Manager tunable parameters
- About LLT tunable parameters
- About GAB tunable parameters
- About VXFEN tunable parameters
- About AMF tunable parameters
- Appendix C. Command reference
- Appendix D. Creating a starter database
- Appendix E. Executive Order logging
Removing LUNs dynamically from an existing target ID
Dynamic Multipathing (DMP) provides a Dynamic Reconfiguration tool to simplify the removal of LUNs from an existing target ID. Each LUN is unmapped from the host. DMP issues an operating system device scan and cleans up the operating system device tree.
Warning:
Do not run any device discovery operations outside of the Dynamic Reconfiguration tool until the device operation is completed.
In a cluster, perform the steps on all nodes in the cluster.
To remove LUNs dynamically from an existing target ID
- Stop all applications and volumes that are hosted on the LUNs that are to be removed.
If the device is in use by Veritas Volume Manager (VxVM), perform the following steps:
If the device is part of a disk group, move the disk out of the disk group.
# vxdg -g dgname rmdisk daname
Remove the disk from the vxdisk list.
In a cluster, perform this step from all of the nodes.
# vxdisk rm da-name
For example:
# vxdisk rm eva4k6k0_0
For LUNs using Linux LVM over DMP devices, remove the device from the LVM volume group.
# vgreduce vgname devicepath
- Start the vxdiskadm utility:
# vxdiskadm
- Select the Dynamic Reconfiguration operations option from the vxdiskadm menu.
- Select the Remove LUNs option.
- Type list or press Return to display a list of LUNs that are available for removal. A LUN is available for removal if it is not in use.
The following shows an example output:
Select disk devices to remove: [<pattern-list>,all,list]: list LUN(s) available for removal: eva4k6k0_0 eva4k6k0_1 eva4k6k0_2 eva4k6k0_3 eva4k6k0_4 emc0_0119
- Enter the name of a LUN, a comma-separated list of LUNs, or a regular expression to specify the LUNs to remove.
For example, enter emc0_0119.
Select disk devices to Remove: [<pattern-list>,all,list, file=<filename>,q] (default:list): emc0_0119
- At the prompt, confirm the LUN selection.
DMP removes the LUN from VxVM usage.
- At the following prompt, remove the LUN from the array or the target.
Remove Luns Menu: VolumeManager/Disk/DynamicReconfigurationOperations/RemoveLuns INFO: Removing Lun [emc0_0119] from VxVM INFO: LUN [emc0_0119] removed successfully from VxVM. ----------------------------------------------------- Enclosure=emc0 AVID=0119 Device=emc0_0119 Serial=2200119000 PATH=sdad ctlr=c11 port=16c-0 [-] PATH=sdah ctlr=c12 port=16c-0 [-] PATH=sdaj ctlr=c12 port=16c-1 [-] PATH=sdaf ctlr=c11 port=16c-1 [-] ----------------------------------------------------- Please remove LUNs with Above details from array and press 'y' to continue removal or 'q' to quit :
- The following are sample EMC Symmetrix commands:
# symmask -sid 822 -wwn 2001000e1ec307de -dir 16c -p 0 remove devs 0119 # symmask -sid 822 -wwn 2001000e1ec307de -dir 16c -p 1 remove devs 0119 # symmask -sid 822 -wwn 2001000e1ec307df -dir 16c -p 0 remove devs 0119 # symmask -sid 822 -wwn 2001000e1ec307df -dir 16c -p 1 remove dev 0119 # symmask -sid 822 refresh -nopr Symmetrix FA/SE directors updated with contents of SymMask Database 000290300822 When complete, respond to previous array prompt. Please remove LUNs with Above details from array and press 'y' to continue removal or 'q' to quit : y
- DMP completes the removal of the device from VxVM usage. Output similar to the following is displayed:
Remove Luns Menu: VolumeManager/Disk/DynamicReconfigurationOperations/RemoveLuns INFO: Checking/Removing stale device entries (if any). INFO: Refreshing OS device Tree INFO: Updating VxVM device tree --------------------------------------------------------- Luns Removed --------------------------------------------------------- emc0_0119 --------------------------------------------------------- Press <Enter> or <Return> to continue:
- Specify the dynamic reconfiguration operation to be done:
Specify Dynamic Reconfiguration Operation to be done: Menu: VolumeManager/Disk/DynamicReconfigurationOperations 1 Add Luns 2 Remove Luns 3 Replace Luns 4 Replace HBA ? Display help about menu ?? Display help about the menuing system q Exit
To exit the Dynamic Reconfiguration tool, enter: q