Red Hat Enterprise Linux (RHEL) 8

✍ Scribed by Red Hat

• Tongue: English
• Leaves: 159
• Category: Library

✦ Table of Contents

Table of Contents
PROVIDING FEEDBACK ON RED HAT DOCUMENTATION
CHAPTER 1. OVERVIEW OF AVAILABLE FILE SYSTEMS
1.1. TYPES OF FILE SYSTEMS
1.2. LOCAL FILE SYSTEMS
Available local file systems
1.3. THE XFS FILE SYSTEM
Performance characteristics
1.4. THE EXT4 FILE SYSTEM
1.5. COMPARISON OF XFS AND EXT4
1.6. CHOOSING A LOCAL FILE SYSTEM
1.7. NETWORK FILE SYSTEMS
Available network file systems
1.8. SHARED STORAGE FILE SYSTEMS
Comparison with network file systems
Concurrency
Performance characteristics
Available shared storage file systems
1.9. CHOOSING BETWEEN NETWORK AND SHARED STORAGE FILE SYSTEMS
1.10. VOLUME-MANAGING FILE SYSTEMS
Available volume-managing file systems
CHAPTER 2. MANAGING LOCAL STORAGE USING RHEL SYSTEM ROLES
2.1. INTRODUCTION TO THE STORAGE ROLE
2.2. STORAGE ROLE PARAMETERS
CHAPTER 3. MOUNTING NFS SHARES
3.1. INTRODUCTION TO NFS
3.2. SUPPORTED NFS VERSIONS
Default NFS version
Features of minor NFS versions
3.3. SERVICES REQUIRED BY NFS
The RPC services with NFSv4
3.4. NFS HOST NAME FORMATS
3.5. INSTALLING NFS
3.6. DISCOVERING NFS EXPORTS
3.7. MOUNTING AN NFS SHARE WITH MOUNT
3.8. COMMON NFS MOUNT OPTIONS
3.9. RELATED INFORMATION
CHAPTER 4. EXPORTING NFS SHARES
4.1. INTRODUCTION TO NFS
4.2. SUPPORTED NFS VERSIONS
Default NFS version
Features of minor NFS versions
4.3. THE TCP AND UDP PROTOCOLS IN NFSV3 AND NFSV4
4.4. SERVICES REQUIRED BY NFS
The RPC services with NFSv4
4.5. NFS HOST NAME FORMATS
4.6. NFS SERVER CONFIGURATION
4.6.1. The /etc/exports configuration file
Export entry
Default options
Default and overridden options
4.6.2. The exportfs utility
Common exportfs options
4.7. NFS AND RPCBIND
4.8. INSTALLING NFS
4.9. STARTING THE NFS SERVER
4.10. TROUBLESHOOTING NFS AND RPCBIND
4.11. CONFIGURING THE NFS SERVER TO RUN BEHIND A FIREWALL
4.12. EXPORTING RPC QUOTA THROUGH A FIREWALL
4.13. ENABLING NFS OVER RDMA (NFSORDMA)
4.14. CONFIGURING AN NFSV4-ONLY SERVER
4.14.1. Benefits and drawbacks of an NFSv4-only server
4.14.2. NFS and rpcbind
4.14.3. Configuring the NFS server to support only NFSv4
4.14.4. Verifying the NFSv4-only configuration
4.15. RELATED INFORMATION
CHAPTER 5. SECURING NFS
5.1. NFS SECURITY WITH AUTH_SYS AND EXPORT CONTROLS
5.2. NFS SECURITY WITH AUTH_GSS
5.3. CONFIGURING AN NFS SERVER AND CLIENT TO USE KERBEROS
5.4. NFSV4 SECURITY OPTIONS
5.5. FILE PERMISSIONS ON MOUNTED NFS EXPORTS
CHAPTER 6. ENABLING PNFS SCSI LAYOUTS IN NFS
6.1. THE PNFS TECHNOLOGY
6.2. PNFS SCSI LAYOUTS
Operations between the client and the server
Device reservations
6.3. CHECKING FOR A SCSI DEVICE COMPATIBLE WITH PNFS
6.4. SETTING UP PNFS SCSI ON THE SERVER
6.5. SETTING UP PNFS SCSI ON THE CLIENT
6.6. RELEASING THE PNFS SCSI RESERVATION ON THE SERVER
6.7. MONITORING PNFS SCSI LAYOUTS FUNCTIONALITY
6.7.1. Checking pNFS SCSI operations from the server using nfsstat
6.7.2. Checking pNFS SCSI operations from the client using mountstats
CHAPTER 7. MOUNTING AN SMB SHARE ON RED HAT ENTERPRISE LINUX
7.1. SUPPORTED SMB PROTOCOL VERSIONS
7.2. UNIX EXTENSIONS SUPPORT
7.3. MANUALLY MOUNTING AN SMB SHARE
7.4. MOUNTING AN SMB SHARE AUTOMATICALLY WHEN THE SYSTEM BOOTS
7.5. AUTHENTICATING TO AN SMB SHARE USING A CREDENTIALS FILE
7.6. PERFORMING A MULTI-USER SMB MOUNT
7.6.1. Mounting a share with the multiuser option
7.6.2. Verifying if an SMB share is mounted with the multiuser option
7.6.3. Accessing a share as a user
7.7. FREQUENTLY USED MOUNT OPTIONS
CHAPTER 8. OVERVIEW OF PERSISTENT NAMING ATTRIBUTES
8.1. DISADVANTAGES OF NON-PERSISTENT NAMING ATTRIBUTES
8.2. FILE SYSTEM AND DEVICE IDENTIFIERS
File system identifiers
Device identifiers
Recommendations
8.3. DEVICE NAMES MANAGED BY THE UDEV MECHANISM IN /DEV/DISK/
8.3.1. File system identifiers
The UUID attribute in /dev/disk/by-uuid/
The Label attribute in /dev/disk/by-label/
8.3.2. Device identifiers
The WWID attribute in /dev/disk/by-id/
The Partition UUID attribute in /dev/disk/by-partuuid
The Path attribute in /dev/disk/by-path/
8.4. THE WORLD WIDE IDENTIFIER WITH DM MULTIPATH
8.5. LIMITATIONS OF THE UDEV DEVICE NAMING CONVENTION
8.6. LISTING PERSISTENT NAMING ATTRIBUTES
8.7. MODIFYING PERSISTENT NAMING ATTRIBUTES
CHAPTER 9. GETTING STARTED WITH PARTITIONS
9.1. VIEWING THE PARTITION TABLE
9.1.1. Viewing the partition table with parted
9.1.2. Example output of parted print
9.2. CREATING A PARTITION TABLE ON A DISK
9.2.1. Considerations before modifying partitions on a disk
The maximum number of partitions
The maximum size of a partition
Size alignment
9.2.2. Comparison of partition table types
9.2.3. Creating a partition table on a disk with parted
9.3. CREATING A PARTITION
9.3.1. Considerations before modifying partitions on a disk
The maximum number of partitions
The maximum size of a partition
Size alignment
9.3.2. Partition types
Partition types or flags
Partition file system type
9.3.3. Partition naming scheme
9.3.4. Mount points and disk partitions
9.3.5. Creating a partition with parted
9.3.6. Setting a partition type with fdisk
9.4. REMOVING A PARTITION
9.4.1. Considerations before modifying partitions on a disk
The maximum number of partitions
The maximum size of a partition
Size alignment
9.4.2. Removing a partition with parted
9.5. RESIZING A PARTITION
9.5.1. Considerations before modifying partitions on a disk
The maximum number of partitions
The maximum size of a partition
Size alignment
9.5.2. Resizing a partition with parted
CHAPTER 10. GETTING STARTED WITH XFS
10.1. THE XFS FILE SYSTEM
Performance characteristics
10.2. CREATING AN XFS FILE SYSTEM
10.2.1. Creating an XFS file system with mkfs.xfs
10.2.2. Creating an XFS file system on a block device using RHEL System Roles
10.2.2.1. Example Ansible playbook to create an XFS file system on a block device
10.2.2.2. Additional resources
10.3. BACKING UP AN XFS FILE SYSTEM
10.3.1. Features of XFS backup
10.3.2. Backing up an XFS file system with xfsdump
10.3.3. Additional resources
10.4. RESTORING AN XFS FILE SYSTEM FROM BACKUP
10.4.1. Features of restoring XFS from backup
10.4.2. Restoring an XFS file system from backup with xfsrestore
10.4.3. Informational messages when restoring an XFS backup from a tape
10.4.4. Additional resources
10.5. INCREASING THE SIZE OF AN XFS FILE SYSTEM
10.5.1. Increasing the size of an XFS file system with xfs_growfs
10.6. COMPARISON OF TOOLS USED WITH EXT4 AND XFS
CHAPTER 11. CONFIGURING XFS ERROR BEHAVIOR
11.1. CONFIGURABLE ERROR HANDLING IN XFS
11.2. CONFIGURATION FILES FOR SPECIFIC AND UNDEFINED XFS ERROR CONDITIONS
11.3. SETTING XFS BEHAVIOR FOR SPECIFIC CONDITIONS
11.4. SETTING XFS BEHAVIOR FOR UNDEFINED CONDITIONS
11.5. SETTING THE XFS UNMOUNT BEHAVIOR
CHAPTER 12. CHECKING AND REPAIRING A FILE SYSTEM
12.1. SCENARIOS THAT REQUIRE A FILE SYSTEM CHECK
12.2. POTENTIAL SIDE EFFECTS OF RUNNING FSCK
12.3. ERROR-HANDLING MECHANISMS IN XFS
Unclean unmounts
Corruption
12.4. CHECKING AN XFS FILE SYSTEM WITH XFS_REPAIR
12.5. REPAIRING AN XFS FILE SYSTEM WITH XFS_REPAIR
12.6. ERROR HANDLING MECHANISMS IN EXT2, EXT3, AND EXT4
12.7. CHECKING AN EXT2, EXT3, OR EXT4 FILE SYSTEM WITH E2FSCK
12.8. REPAIRING AN EXT2, EXT3, OR EXT4 FILE SYSTEM WITH E2FSCK
CHAPTER 13. MOUNTING FILE SYSTEMS
13.1. THE LINUX MOUNT MECHANISM
13.2. LISTING CURRENTLY MOUNTED FILE SYSTEMS
13.3. MOUNTING A FILE SYSTEM WITH MOUNT
13.4. MOVING A MOUNT POINT
13.5. UNMOUNTING A FILE SYSTEM WITH UMOUNT
13.6. COMMON MOUNT OPTIONS
13.7. SHARING A MOUNT ON MULTIPLE MOUNT POINTS
13.7.1. Types of shared mounts
13.7.2. Creating a private mount point duplicate
13.7.3. Creating a shared mount point duplicate
13.7.4. Creating a slave mount point duplicate
13.7.5. Preventing a mount point from being duplicated
13.7.6. Related information
13.8. PERSISTENTLY MOUNTING FILE SYSTEMS
13.8.1. The /etc/fstab file
13.8.2. Adding a file system to /etc/fstab
13.8.3. Persistently mounting a file system using RHEL System Roles
13.8.3.1. Example Ansible playbook to persistently mount a file system
13.8.3.2. Additional resources
13.9. MOUNTING FILE SYSTEMS ON DEMAND
13.9.1. The autofs service
13.9.2. The autofs configuration files
The master map file
Map files
The amd map format
13.9.3. Configuring autofs mount points
13.9.4. Automounting NFS server user home directories with autofs service
13.9.5. Overriding or augmenting autofs site configuration files
13.9.6. Using LDAP to store automounter maps
13.10. SETTING READ-ONLY PERMISSIONS FOR THE ROOT FILE SYSTEM
13.10.1. Files and directories that always retain write permissions
13.10.2. Configuring the root file system to mount with read-only permissions on boot
CHAPTER 14. LIMITING STORAGE SPACE USAGE WITH QUOTAS
14.1. DISK QUOTAS
14.1.1. The xfs_quota tool
Additional resources
14.2. MANAGING XFS DISK QUOTAS
14.2.1. File system quota management in XFS
14.2.2. Enabling disk quotas for XFS
14.2.3. Reporting XFS usage
Prerequisites
Procedure
Additional resources
14.2.4. Modifying XFS quota limits
Prerequisites
Procedure
Additional resources
14.2.5. Setting project limits for XFS
Procedure
Additional resources
14.3. MANAGING EXT3 AND EXT4 DISK QUOTAS
14.3.1. Installing the quota tool
14.3.2. Enabling quota feature on file system creation
14.3.3. Enabling quota feature on existing file systems
14.3.4. Enabling quota enforcement
14.3.5. Assigning quotas per user
14.3.6. Assigning quotas per group
14.3.7. Assigning quotas per project
14.3.8. Setting the grace period for soft limits
14.3.9. Turning file system quotas off
14.3.10. Reporting on disk quotas
CHAPTER 15. DISCARDING UNUSED BLOCKS
15.1. BLOCK DISCARD OPERATIONS
Requirements
15.2. TYPES OF BLOCK DISCARD OPERATIONS
Recommendations
15.3. PERFORMING BATCH BLOCK DISCARD
15.4. ENABLING ONLINE BLOCK DISCARD
15.5. ENABLING ONLINE BLOCK DISCARD USING RHEL SYSTEM ROLES
15.5.1. Example Ansible playbook to enable online block discard
15.5.2. Additional resources
15.6. ENABLING PERIODIC BLOCK DISCARD
CHAPTER 16. MANAGING LAYERED LOCAL STORAGE WITH STRATIS
16.1. SETTING UP STRATIS FILE SYSTEMS
16.1.1. The purpose and features of Stratis
16.1.2. Components of a Stratis volume
16.1.3. Block devices usable with Stratis
Supported devices
Unsupported devices
16.1.4. Installing Stratis
16.1.5. Creating a Stratis pool
16.1.6. Creating a Stratis file system
16.1.7. Mounting a Stratis file system
16.1.8. Persistently mounting a Stratis file system
16.1.9. Related information
16.2. EXTENDING A STRATIS VOLUME WITH ADDITIONAL BLOCK DEVICES
16.2.1. Components of a Stratis volume
16.2.2. Adding block devices to a Stratis pool
16.2.3. Related information
16.3. MONITORING STRATIS FILE SYSTEMS
16.3.1. Stratis sizes reported by different utilities
16.3.2. Displaying information about Stratis volumes
16.3.3. Related information
16.4. USING SNAPSHOTS ON STRATIS FILE SYSTEMS
16.4.1. Characteristics of Stratis snapshots
16.4.2. Creating a Stratis snapshot
16.4.3. Accessing the content of a Stratis snapshot
16.4.4. Reverting a Stratis file system to a previous snapshot
16.4.5. Removing a Stratis snapshot
16.4.6. Related information
16.5. REMOVING STRATIS FILE SYSTEMS
16.5.1. Components of a Stratis volume
16.5.2. Removing a Stratis file system
16.5.3. Removing a Stratis pool
16.5.4. Related information
CHAPTER 17. GETTING STARTED WITH AN EXT3 FILE SYSTEM
17.1. FEATURES OF AN EXT3 FILE SYSTEM
17.2. CREATING AN EXT3 FILE SYSTEM
17.3. MOUNTING AN EXT3 FILE SYSTEM
17.4. RESIZING AN EXT3 FILE SYSTEM
17.5. CREATING AND MOUNTING EXT3 FILE SYSTEMS USING RHEL SYSTEM ROLES
17.5.1. Example Ansible playbook to create and mount an ext3 file system
17.5.2. Additional resources
CHAPTER 18. GETTING STARTED WITH AN EXT4 FILE SYSTEM
18.1. FEATURES OF AN EXT4 FILE SYSTEM
18.2. CREATING AN EXT4 FILE SYSTEM
18.3. MOUNTING AN EXT4 FILE SYSTEM
18.4. RESIZING AN EXT4 FILE SYSTEM
18.5. CREATING AND MOUNTING EXT4 FILE SYSTEMS USING RHEL SYSTEM ROLES
18.5.1. Example Ansible playbook to create and mount an ext4 file system
18.6. COMPARISON OF TOOLS USED WITH EXT4 AND XFS