Red Hat LINUX VIRTUAL SERVER 4.6 - ADMINISTRATION Manuale di Installazione Pagina 231
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Chapter 13. Miscellaneous tasks 211
13.3 Extending an existing logical volume
This section describes the process of adding a new minidisk to an existing LVM. This is useful
when your logical volume has run out of space.
First, repeat the steps described in 13.1, “Adding DASD” on page 204 to add a new minidisk.
In this example, a minidisk at virtual address 104 is added with a size of 3338 cylinders. Do
not forget to log off and log back on to LINUX02 so the new directory entry is read.
When your system comes back, enable the new 104 disk, run dasdfmt on it and create a
single partition:
# chccwdev -e 104
Setting device 0.0.0104 online
Done
# lsdasd
Bus-ID Status Name Device Type BlkSz Size Blocks
==============================================================================
0.0.0100 active dasda 94:0 ECKD 4096 2347MB 600840
0.0.0101 active dasdb 94:4 ECKD 4096 2347MB 600840
0.0.0300 active dasdc 94:8 FBA 512 256MB 524288
0.0.0301 active dasdd 94:12 FBA 512 512MB 1048576
0.0.0102 active dasde 94:16 ECKD 4096 1173MB 300420
0.0.0103 active dasdf 94:20 ECKD 4096 1173MB 300420
0.0.0104 active dasdg 94:24 ECKD 4096 2347MB 600840
# dasdfmt -b 4096 -y -f /dev/dasdg
Finished formatting the device.
Rereading the partition table... ok
# fdasd -a /dev/dasdg
reading volume label ..: VOL1
reading vtoc ..........: ok
auto-creating one partition for the whole disk...
writing volume label...
writing VTOC...
rereading partition table...
13.3.1 Creating a physical volume
Use the pvcreate command to create a physical volume from the minidisk:
# pvcreate /dev/dasdg1
Physical volume "/dev/dasdg1" successfully created
13.3.2 Extending the volume group
Use the vgextend command to extend the volume group into the new physical volume. Then,
use vgdisplay to verify that the volume group has free space.
# vgdisplay homevg
--- Volume group ---
VG Name homevg
System ID
Format lvm2
Metadata Areas 2
- Enterprise Linux 6.0 1
- February 2011 3
- First Edition (February 2011) 4
- Contents 5
- Contents v 7
- Contents vii 9
- Trademarks 12
- Chapters and appendixes 13
- Conventions 14
- The team who wrote this book 15
- Special thanks 15
- Comments welcome 16
- Preface xv 17
- Summary of changes 19
- 1.1 What is virtualization 23
- 1.4 Infrastructure design 24
- Planning 27
- 2.1 Bill of materials 28
- 2.2 z/VM conventions 29
- Real address 30
- LPAR identifier 30
- 2.3 Disk planning 31
- 2.4 Memory planning 32
- 2.5 Password planning 32
- 2.6 Planning worksheets 33
- 2.7 Blank worksheets 36
- 2.7.2 z/VM DASD worksheet 37
- Configuring a desktop machine 39
- Figure 3-2 Setting logging 41
- Saving sessions 43
- 3.2 Setting up a VNC client 44
- 3.3 3270 emulators 45
- Figure 4-3 Recovery menu 51
- Running INSTDVD 57
- Figure 4-11 Load window 58
- 4.2 Configuring TCP/IP 61
- 4.6 Adding paging volumes 70
- Using the CPFORMAT EXEC 72
- 4.6.4 Testing the changes 76
- 4.8.2 Testing the changes 83
- 4.9.1 VM security products 84
- clipping the volumes 90
- Servicing z/VM 93
- Chapter 5. Servicing z/VM 75 95
- Chapter 5. Servicing z/VM 77 97
- Chapter 5. Servicing z/VM 79 99
- S9338801 in this example): 100
- Chapter 5. Servicing z/VM 81 101
- Chapter 5. Servicing z/VM 85 105
- Chapter 5. Servicing z/VM 87 107
- 5.4 Applying a PTF 108
- Chapter 5. Servicing z/VM 89 109
- Chapter 5. Servicing z/VM 91 111
- Chapter 5. Servicing z/VM 93 113
- Chapter 5. Servicing z/VM 95 115
- Configuring an NFS/FTP server 117
- 6.4 Enabling the NFS server 120
- 7.1 Installing the cloner 126
- Figure 7-2 NFS setup panel 135
- 7.2 Configuring the cloner 147
- 7.2.8 Configuring SSH keys 153
- 7.2.12 Rebooting the system 155
- 7.2.13 Verifying the changes 155
- Figure 8-4 166
- 8.2.7 Configuring SSH keys 172
- 8.2.10 Rebooting the system 173
- 8.2.11 Verifying the changes 173
- Detaching the source disks 180
- 9.4.3 Using the clone script 185
- 9.6 Reviewing system status 193
- 11.1.2 Testing Apache 202
- 11.1.3 Turning on a firewall 203
- 11.1.6 Apache resources 205
- 11.2.3 Adding an LDAP user 207
- 11.3.4 Adding a Samba user 212
- 11.3.6 Testing your changes 213
- 11.3.7 Configuring printing 215
- 11.4.1 Additional resources 217
- Servicing Linux with Red Hat 219
- Miscellaneous tasks 223
- 13.1 Adding DASD 224
- 13.2 Adding a logical volume 226
- Volume Group - homevg 227
- 13.4 Adding SCSI/FCP disks 233
- 4014402600000000. Change the 235
- 13.5 Rescuing a Linux system 239
- 13.9 The X Window System 251
- Using PuTTY 254
- Using embedded SSH 256
- INIDICATE LOAD 260
- INDICATE QUEUES EXP 261
- Getting help 262
- Determining who is logged on 262
- Determining storage or memory 263
- Determining processors 263
- 14.2.3 Configuring PERFSVM 266
- Using a web browser interface 270
- Using a 3270 interface 272
- 14.3 Monitoring Linux 274
- References 277
- Cheat sheets 278
- A vi cheat sheet 279
- Additional material 281
- Related publications 283
- Online resources 284
- Help from IBM 285
- Hat Enterprise Linux 6.0 293
- Back cover 296
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