Red Hat ENTERPRISE LINUX 4 - ADMINISTRATION Installation Guide download pdf (Page 4)

Storage Administration Guide

This guide provides instructions on how to effectively manage storage devices and file systems on

Red Hat Enterprise Linux 6. It is intended for use by system administrators with basic to intermediate

knowledge of Red Hat Enterprise Linux or Fedora.

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Red Hat Enterprise Linux 6 1
Administration Guide 1
Storage Administration Guide 2
Enterprise Linux 6 3
Edition 0 3
1. Document Conventions 9
1.2. Pull-quote Conventions 10
1.3. Notes and Warnings 11
2.1. Do You Need Help? 11
2.2. We Need Feedback! 12
Overview 13
Storage Considerations During 15
Installation 15
2.3. Special Considerations 16
LVM (Logical Volume Manager) 19
3.1. What is LVM2? 20
3.2. Using system-config-lvm 20
3.2.3. Migrating Extents 25
3.3. References 33
Partitions 35
4.2. Creating a Partition 37
4.2.3. Add to /etc/fstab 38
4.3. Removing a Partition 39
4.4. Resizing a Partition 39
File System Structure 41
5.2.1.2. The /boot/ Directory 43
5.2.1.3. The /dev/ Directory 43
5.2.1.9. The /proc/ Directory 45
5.2.1.11. The /srv/ Directory 45
5.2.1.12. The /sys/ Directory 45
5.2.1.13. The /usr/ Directory 46
5.2.1.14. The /var/ Directory 47
The Ext3 File System 51
New Mount Option: data_err 52
More Efficient Storage Use 52
The Ext4 File System 55
Global File System 2 59
The XFS File System 61
9.3. XFS Quota Management 63
Setting Project Limits 64
end: ino 1 offset 0 67
mfile end: ino 1 offset 0 67
Network File System (NFS) 69
10.1.1. Required Services 70
10.3. autofs 72
10.3.2. autofs Configuration 74
10.6.2. The exportfs Command 82
10.7. Securing NFS 84
10.7.2. Host Access in NFSv4 85
10.7.3. File Permissions 85
10.8. NFS and rpcbind 86
10.9. Using NFS over TCP 87
10.10. References 88
FS-Cache 89
11.1. Performance Guarantee 90
11.2. Setting Up a Cache 90
11.3.1. Cache Sharing 91
11.5. Statistical Information 93
11.6. References 94
Encrypted File System 95
12.2. Additional Information 96
13.1. What is RAID? 97
13.2. Who Should Use RAID? 97
13.3. RAID Types 97
Software RAID 98
13.5. Linux RAID Subsystems 100
13.7. Configuring RAID Sets 101
Swap Space 103
14.2.3. Creating a Swap File 104
14.3. Removing Swap Space 105
14.4. Moving Swap Space 106
Disk Quotas 107
15.2. Managing Disk Quotas 110
Best method for most systems 111
15.3. References 112
Access Control Lists 113
16.3. Setting Default ACLs 114
16.4. Retrieving ACLs 114
16.7. References 116
Write Barriers 117
Disabling Write Caches 118
Battery-Backed Write Caches 118
High-End Arrays 119
18.2. Userspace Access 122
18.3. Standards 122
18.4. Stacking I/O Parameters 123
0, and minimum_io_size is a 124
File System tools 125
Solid-State Disk Deployment 131
Guidelines 131
20.2. Tuning Considerations 132
Online Storage Management 133
21.2. iSCSI 135
21.3. Persistent Naming 135
21.3.1. WWID 136
Important 137
local timeout=20 142
local done=1 142
21.16.1. Fibre Channel 154
SCSI Error Handler 156
21.16.3. iSCSI Root 157
21.18. Troubleshooting 158
22.1. Virtual Storage 161
22.2. DM-Multipath 161
Appendix A. Revision History 163
Glossary 165

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