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158 z/VM and Linux on IBM System z: The Virtualization Cookbook for Red Hat Enterprise Linux 6.0
'cp xautolog tcpip' /* start up TCPIP */
'CP XAUTOLOG DTCVSW1' /* start VSWITCH controller 1 */
'CP XAUTOLOG DTCVSW2' /* start VSWITCH controller 2 */
'cp set pf12 ret' /* set the retrieve key */
'cp set mdc stor 0m 128m' /* Limit minidisk cache in CSTOR */
'cp set mdc xstore 0m 0m' /* Disable minidisk cache in XSTOR */
'cp set srm storbuf 300% 250% 200%' /* Overcommit memory */
'cp set signal shutdown 300' /* Allow guests 5 min to shut down */
/* Grant access to VSWITCH for each Linux user */
'cp set vswitch vsw1 grant rh6clone'
'cp set vswitch vsw1 grant rh6gold'
'cp set vswitch vsw1 grant linux01'
/* XAUTOLOG each Linux user that should be started */
'cp xautolog rh6clone'
'cp xautolog linux01'
'cp logoff' /* logoff when done */
====> file
These changes will not take effect until the next IPL, so you must grant this user ID access to
the VSWITCH for this z/VM session:
==> set vswitch vsw1 grant linux01
Command complete
9.3 Cloning a virtual server manually
Before using the clone script to clone a server, you should clone a server manually to better
understand the process.
There are many ways to clone Linux under z/VM. The steps in this section are just one way to
do it. The following assumptions are made based on what you have done so far:
The source user ID, RH6GOLD in this example, has a root file system on LVM, located on
minidisks 100-101.
The target user ID, LINUX01 in this example, has identically sized mindisks 100-101.
The vmcp command is available to issue z/VM CP commands
The z/VM FLASHCOPY command can be used, but if you do not have that support, the
Linux dd command will work.
Given these assumptions, one set of steps that can be used to clone a system is as follows:
1. Link the source disks as read-only.
2. Link the target disks as read/write.
3. Copy the source to the target disk with FLASHCOPY or the Linux dd command.
4. Detach the source disks.
5. Bring the newly copied LVM online.
6. Mount the newly copied root file system.
7. Modify the networking information on the target system.
- 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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