Arctera InfoScale™ 9.0 Storage Foundation Administrator's Guide - Linux
- Section I. Introducing Storage Foundation
- Overview of Storage Foundation
- 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
- Dirty region logging
- Volume snapshots
- FastResync
- How VxVM handles hardware clones or snapshots
- Volume encryption
- How Veritas File System works
- 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
- 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
- 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 sites and remote mirrors
- Section V. Optimizing I/O performance
- Veritas File System I/O
- Veritas Volume Manager I/O
- Managing application I/O workloads using maximum IOPS settings
- Section VI. 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 VII. Optimizing storage with Storage Foundation
- Understanding storage optimization solutions in Storage Foundation
- 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
- InfoScale 4K sector device support solution
- Section VIII. 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
- Compressing files
- About compressing files
- Use cases for compressing files
- Section IX. Administering and protecting 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
- Encrypting existing volumes
- Managing disk groups
- Disk group versions
- Displaying disk group information
- Creating a disk group
- 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
- Sample supported root disk layouts for encapsulation
- Encapsulating and mirroring the root disk
- Administering an encapsulated boot disk
- Quotas
- Using Veritas File System quotas
- File Change Log
- Support for protection against ransomware
- Non-modifiable storage checkpoints
- Soft WORM storage
- Secure file system
- Secure file system for Oracle Single Instance
- Secure file system for PostgreSQL database
- Managing volumes and disk groups
- Section X. 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
- Appendix C. Command reference
- Appendix D. InfoScale event logging
Setting log file permissions
In compliance with the U.S. Presidential Executive Order (EO) 14028 (issued on May 12, 2021), all InfoScale log files permissions are set to 600 (rw-------) by default. Only the owner of the log files has full read-write access. However, this default value may not be suitable for all environments. In certain cases, there can be a need to set different values for the log file permissions. To address this requirement, InfoScale provides tunables that let you modify the log file permissions as needed.
To set InfoScale log file permissions
- You can set the InfoScale log file permissions in the following ways:
During InfoScale upgrade:
When you upgrade to InfoScale 9.0, the installer presents you with the following dialog during installation:
Do you want to set the permission of the files as per EO logging standards? [y,n,q]
When you enter y (Yes), the following dialog appears:
Please provide the proper permission option [b,q,?] (0)
The default is value is set as 0 (zero) and the permissions are set to 600 (read-write access to owner) for all log files. Enter the desired value here to set the required permission settings. For example, enter 10 to set the permissions to the default value of 600 (read-write access to owner), applicable to all new log files, but do not change any existing log file permissions.
Note that this value gets applied to all the InfoScale log files. Post upgrade, you can use the manual method to set permissions for log files at an individual component level.
Post InfoScale upgrade:
You can modify the log file permissions after the upgrade. Each InfoScale component has a unique tunable parameter to which you can assign a value to set the desired log file permissions for that component. You can do this manually using the relevant commands or by directly editing the individual component's configuration file.
Note:
When you set the permissions manually, you must restart the individual component service for the changes to take effect.
The log file permissions are set to the value that you provide, irrespective of whether you set the value during upgrade or post upgrade.