Storage Foundation Cluster File System High Availability 7.2 Administrator's Guide - Solaris
- Section I. Introducing Storage Foundation Cluster File System High Availability
- Overview of Storage Foundation Cluster File System High Availability
- About Veritas File System
- About Storage Foundation Cluster File System (SFCFS)
- How Dynamic Multi-Pathing works
- How DMP works
- How Veritas Volume Manager works
- How Veritas Volume Manager works with the operating system
- How Veritas Volume Manager handles storage management
- Volume layouts in Veritas Volume Manager
- Online relayout
- Volume resynchronization
- Dirty region logging
- Volume snapshots
- FastResync
- How VxVM handles hardware clones or snapshots
- How Veritas File System works
- How Storage Foundation Cluster File System High Availability works
- About Storage Foundation Cluster File System High Availability architecture
- About Veritas File System features supported in cluster file systems
- About single network link and reliability
- About I/O fencing
- About preventing data corruption with I/O fencing
- About I/O fencing components
- About server-based I/O fencing
- About secure communication between the SFCFSHA cluster and CP server
- How Cluster Volume Manager works
- Overview of clustering
- Cluster Volume Manager (CVM) tolerance to storage connectivity failures
- Storage disconnectivity and CVM disk detach policies
- CVM initialization and configuration
- Dirty region logging in cluster environments
- Multiple host failover configurations
- About Flexible Storage Sharing
- 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
- 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
- Creating volumes of a specific layout
- Customizing allocation behavior
- Creating and mounting VxFS file systems
- Creating a VxFS file system
- Mounting a VxFS file system
- tmplog mount option
- ioerror mount option
- largefiles and nolargefiles mount options
- Resizing a file system
- Monitoring free space
- Extent attributes
- Section III. Administering multi-pathing with DMP
- Administering Dynamic Multi-Pathing
- Discovering and configuring newly added disk devices
- About discovering disks and dynamically adding disk arrays
- How to administer the Device Discovery Layer
- Administering DMP using the vxdmpadm utility
- Gathering and displaying I/O statistics
- Specifying the I/O policy
- Managing DMP devices for the ZFS root pool
- Discovering and configuring newly added disk devices
- Dynamic Reconfiguration of devices
- Reconfiguring a LUN online that is under DMP control using the Dynamic Reconfiguration tool
- Manually reconfiguring a LUN online that is under DMP control
- Managing devices
- Displaying disk information
- Changing the disk device naming scheme
- Adding and removing disks
- 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
- Administering CFS
- About the mount, fsclustadm, and fsadm commands
- When the CFS primary node fails
- About Snapshots on SFCFSHA
- Administering VCS
- Administering CVM
- About setting cluster node preferences for master failover
- About changing the CVM master manually
- Importing disk groups as shared
- Administering Flexible Storage Sharing
- Administering ODM
- About administering I/O fencing
- About the vxfentsthdw utility
- Testing the coordinator disk group using the -c option of vxfentsthdw
- About the vxfenadm utility
- About the vxfenclearpre utility
- About the vxfenswap utility
- About administering the coordination point server
- About migrating between disk-based and server-based fencing configurations
- Migrating between fencing configurations using response files
- About the vxfentsthdw utility
- Administering SFCFSHA global clusters
- Using Clustered NFS
- Understanding how Clustered NFS works
- Configure and unconfigure Clustered NFS
- Reconciling major and minor numbers for NFS shared disks
- Administering Clustered NFS
- Samples for configuring a Clustered NFS
- Using Common Internet File System
- Deploying Oracle with Clustered NFS
- Administering sites and remote mirrors
- About sites and remote mirrors
- Fire drill - testing the configuration
- Changing the site name
- Administering the Remote Mirror configuration
- Failure and recovery scenarios
- Administering Storage Foundation Cluster File System High Availability and its components
- Section V. Optimizing I/O performance
- Section VI. Veritas Extension for Oracle Disk Manager
- Using Veritas Extension for Oracle Disk Manager
- About Oracle Disk Manager
- About Oracle Disk Manager and Oracle Managed Files
- Using Cached ODM
- Using Veritas Extension for Oracle Disk Manager
- Section VII. Using Point-in-time copies
- Understanding point-in-time copy methods
- 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
- Traditional third-mirror break-off snapshots
- Full-sized instant snapshots
- Creating instant snapshots
- Adding an instant snap DCO and DCO volume
- Controlling instant snapshot synchronization
- Creating instant snapshots
- Cascaded snapshots
- Adding a version 0 DCO and DCO volume
- Administering Storage Checkpoints
- Storage Checkpoint administration
- 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
- 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
- Veritas InfoScale 4k sector device support solution
- Section IX. Maximizing storage utilization
- Understanding storage tiering with SmartTier
- Creating and administering volume sets
- Multi-volume file systems
- Features implemented using multi-volume file system (MVFS) support
- Adding a volume to and removing a volume from a multi-volume file system
- Volume encapsulation
- Load balancing
- Administering SmartTier
- About SmartTier
- Placement classes
- Administering placement policies
- File placement policy rules
- Multiple criteria in file placement policy rule statements
- Using SmartTier with solid state disks
- Sub-file relocation
- Administering hot-relocation
- How hot-relocation works
- Moving relocated subdisks
- Deduplicating data on Solaris SPARC
- Compressing files
- About compressing files
- Use cases for compressing files
- Section X. Administering storage
- Managing volumes and disk groups
- Rules for determining the default disk group
- Moving volumes or disks
- Monitoring and controlling tasks
- Performing online relayout
- Adding a mirror to a volume
- Managing disk groups
- Disk group versions
- Displaying disk group information
- Importing a disk group
- Moving disk groups between systems
- Importing a disk group containing hardware cloned disks
- Handling conflicting configuration copies
- Destroying a disk group
- Backing up and restoring disk group configuration data
- Managing plexes and subdisks
- Decommissioning storage
- Rootability
- Encapsulating a disk
- Rootability
- Administering an encapsulated boot disk
- Quotas
- Using Veritas File System quotas
- File Change Log
- Managing volumes and disk groups
- Section XI. Reference
- Appendix A. Reverse path name lookup
- Appendix B. Tunable parameters
- Tuning the VxFS file system
- 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
- Appendix C. Veritas File System disk layout
- Appendix D. Command reference
- Appendix E. Creating a starter database
Mounting a VxFS file system
You can mount a VxFS file system by using the mount command. When you enter the mount command, the generic mount command parses the arguments and the -F FSType option executes the mount command specific to that file system type. The mount command first searches the /etc/fs/FSType
directory, then the /usr/lib/fs/FSType
directory. If the -F option is not supplied, the command searches the file /etc/vfstab
for a file system and an FSType matching the special file or mount point provided. If no file system type is specified, mount uses the default file system.
The mount command automatically runs the VxFS fsck command to clean up the intent log if the mount command detects a dirty log in the file system. This functionality is only supported on file systems mounted on a Veritas Volume Manager (VxVM) volume.
In addition to the standard mount mode (delaylog mode), Veritas File System (VxFS) provides the following mount options for you to specify other modes of operation:
Caching behavior can be altered with the mincache option, and the behavior of O_SYNC and D_SYNC writes can be altered with the convosync option.
See the fcntl
(2) manual page.
The delaylog and tmplog modes can significantly improve performance. The improvement over log mode is typically about 15 to 20 percent with delaylog; with tmplog, the improvement is even higher. Performance improvement varies, depending on the operations being performed and the workload. Read/write intensive loads should show less improvement, while file system structure intensive loads, such as mkdir, create, and rename, may show over 100 percent improvement. The best way to select a mode is to test representative system loads against the logging modes and compare the performance results.
Most of the modes can be used in combination. For example, a desktop machine might use both the blkclear and mincache=closesync modes.
The mount command automatically runs the VxFS fsck command to clean up the intent log if the mount command detects a dirty log in the file system. This functionality is only supported on file systems mounted on a Veritas Volume Manager (VxVM) volume.
See the mount_vxfs
(1M) manual page.
To mount a file system
- Use the mount command to mount a file system:
mount [-F vxfs] [generic_options] [-r] [-o specific_options] \ special mount_point
vxfs | File system type. |
generic_options | Options common to most other file system types. |
specific_options | Options specific to VxFS. |
-o ckpt=ckpt_name | Mounts a Storage Checkpoint. |
-o cluster | Mounts a file system in shared mode. Available only with the VxFS cluster file system feature. |
special | A VxFS block special device. |
mount_point | Directory on which to mount the file system. |
-r | Mounts the file system as read-only. |
The following example mounts the file system /dev/vx/dsk/fsvol/vol1
on the /mnt1
directory with read/write access and delayed logging.
Example of mounting a file system
- Mount the file system
/dev/vx/dsk/fsvol/vol1
on the/mnt1
directory with read/write access and delayed logging:# mount -F vxfs -o delaylog /dev/vx/dsk/fsvol/vol1 /mnt1