Red Hat ENTERPRISE LINUX - ONLINE STORAGE RECONFIGURATION GUIDE BETA Informazioni Techniche Pagina 102
- Pagina / 238
- Indice
- SEGNALIBRI
Valutato. / 5. Basato su recensioni clienti
Fig ure 14 .2. Lo g ical Vo lu mes
On the other hand, if a system is partitioned with the ext3 file system, the hard drive is divided into
partitions of defined sizes. If a partition becomes full, it is not easy to expand the size of the partition.
Even if the partition is moved to another hard drive, the original hard drive space has to be
reallocated as a different partition or not used.
Important
This chapter on LVM/LVM2 focuses on the use of the LVM GUI administration tool, i.e. system-
co nfi g -l vm. For comprehensive information on the creation and configuration of LVM
partitions in clustered and non-clustered storage, refer to the Logical Volume Manager
Administration guide also provided by Red Hat.
In addition, the Installation Guide for Red Hat Enterprise Linux 6 also documents how to create
and configure LVM logical volumes during installation. For more information, refer to the
Create LVM Logical Volume section of the Installation Guide for Red Hat Enterprise Linux 6.
14 .1. What is LVM2?
LVM version 2, or LVM2, was the default for Red Hat Enterprise Linux 5, which uses the device
mapper driver contained in the 2.6 kernel. LVM2 can be upgraded from versions of Red Hat
Enterprise Linux running the 2.4 kernel.
14 .2. Using system-co nfi g -l vm
The LVM utility allows you to manage logical volumes within X windows or graphically. It does not
come pre-installed, so to install it first run:
# yum install system-config-lvm
You can then access the application by selecting from your menu panel Syst em → Ad min ist rat io n
→ Lo g ical Volu me Man ag ement . Alternatively you can start the Logical Volume Management
utility by typing system-co nfi g -l vm from a terminal.
Chapt er 1 4 . LVM (Logical Volume Manager)
97
- Red Hat Enterprise Linux 6 1
- Storage Administration Guide 1
- Edition 2 3
- Edited by 4
- Legal Notice 5
- Abstract 5
- Table of Contents 6
- 1. Document Convent ions 13
- 1.2. Pull-quot e Convent ions 14
- Important 15
- 2.2. We Need Feedback 16
- Network Block Storage 18
- Part I. File Systems 19
- 2.1.1. FHS Organiz at ion 20
- 2.4. Discard unused blocks 29
- 3.2. Addit ional Informat ion 31
- Chapter 4. Btrfs 32
- Write Barriers 39
- Writ e Barriers 40
- Setting Project Limits 50
- Set t in g Project Limit s 52
- Simple Mode for xfsrest ore 54
- 9.2. pNFS 57
- 9.4. auto fs 59
- 9.7.4 . Host name Format s 73
- 9.7.5. NFS over RDMA 73
- 9.8. Securing NFS 74
- 9.9. NFS and rpcbi nd 76
- Related Books 78
- Chapter 10. FS-Cache 79
- 10.1. Performance Guarant ee 80
- 10.2. Set t ing Up a Cache 80
- 10.3.1. Cache Sharing 81
- Chapt er 1 0 . FS- Cache 82
- 10.6. References 84
- 11.3. Special Considerat ions 87
- Chapter 12. File System Check 90
- 12.2.2. XFS 92
- 12.2.3. Bt rfs 94
- Chapter 13. Partitions 95
- 13.2.3. Add t o /etc/fstab 98
- 13.3. Removing a Part it ion 99
- 13.4 . Resizing a Part it ion 99
- Chapt er 1 3. Part it ions 100
- 14 .1. What is LVM2? 102
- 14 .2.3. Migrat ing Ext ent s 109
- Installed Documentation 118
- Useful Websites 118
- Chapter 15. Swap Space 119
- Chapt er 1 5. Swap Space 120
- 15.2.3. Removing a Swap File 122
- 15.3. Moving Swap Space 123
- Chapter 16. Disk Quotas 124
- Chapt er 1 6 . Disk Q uot as 126
- 16.2. Managing Disk Quot as 128
- 16.3. Disk Quot a References 130
- Firmware RAID 131
- Hardware RAID 131
- Software RAID 132
- 17.3. Linux RAID Subsyst ems 134
- 17.5. Configuring RAID Set s 135
- 18.2.3. Sharing Mount s 142
- 18.4 .2. Useful Websit es 147
- 19.1. Commands 148
- 19.4. vo l ume_key References 152
- 20.1. Mount ing File Syst ems 153
- 20.2. Set t ing Access ACLs 153
- 20.3. Set t ing Default ACLs 154
- 20.4. Ret rieving ACLs 155
- 20.7. ACL References 156
- I/O Scheduler 159
- Virtual Memory 159
- Chapter 22. Write Barriers 160
- How Write Barriers Work 160
- Disabling Write Caches 161
- Battery-Backed Write Caches 161
- High-End Arrays 162
- Block Device ioctls 164
- 23.3. St andards 165
- 23.5. Logical Volume Manager 166
- File System tools 167
- 25.1. Fibre Channel 171
- 25.2. iSCSI 173
- 25.3. Persist ent Naming 175
- 25.3.1. WWID 176
- 25.16.1. Fibre Channel 199
- SCSI Error Handler 201
- Device States 203
- Command Timer 203
- 26.1. Virt ual St orage 205
- 26.2. DM-Mult ipat h 205
- Revision History 207
- Revision Hist ory 208
© 2020, manymanuals.it. Tutti i diritti riservati | 0.044 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commenti su questo manuale