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Chapter 13. Miscellaneous tasks 213
Extending logical volume homelv to 4.58 GB
Logical volume homelv successfully resized
# resize2fs /dev/homevg/homelv
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/homevg/homelv is mounted on /home; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 1
Performing an on-line resize of /dev/homevg/homelv to 1200128 (4k) blocks.
The filesystem on /dev/homevg/homelv is now 1200128 blocks long.
Use the df -h command to show that the file system is now 2.3 GB larger:
# df -h /home
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/homevg-homelv
4.6G 69M 4.3G 2% /home
13.4 Adding SCSI/FCP disks
This book has only described ECKD disks, also known as DASD. In addition, z/VM and Linux
support SCSI/FCP disks.
The Fibre Channel (FC) standard was developed by the National Committee of Information
Technology Standards (NCITS). The System z FCP I/O architecture conforms to these
standards. IBM System z FCP support enables z/VM and Linux running on System z to
access industry-standard SCSI devices. For disk applications, these FCP storage devices
utilize Fixed Block (512 byte) sectors rather than Extended Count Key Data (ECKD) format. A
new channel-path identifier (CHPID) type has been defined called
FCP. The FCP CHPID
type is supported on the FICON and FICON Express features of all System z processors.
This is only a brief introduction to SCSI/FCP disks and multipathing. For more complete
documentation, see Fibre Channel Protocol for Linux and z/VM on IBM System z,
SG24-72666.
In addition, see Introducing N_Port Identifier Virtualization for IBM System z9, REDP-41255.
13.4.1 Adding a single LUN
You can determine if your LPAR has these types of disks defined by using the z/VM QUERY
FCP and QUERY FCP FREE commands. Here is an example from a MAINT 3270 session:
==> q fcp
An active FCP was not found.
==> q fcp free
FCP 1F20 FREE , FCP 1F21 FREE , FCP 1F50 FREE , FCP 1F51 FREE
FCP 3B00 FREE , FCP 3B01 FREE , FCP 3B02 FREE , FCP 3B03 FREE
FCP 3B04 FREE , FCP 3B05 FREE , FCP 3B06 FREE , FCP 3B07 FREE
FCP 3B08 FREE , FCP 3B09 FREE , FCP 3B0A FREE , FCP 3B0B FREE
FCP 3B0C FREE , FCP 3B0D FREE , FCP 3B0E FREE , FCP 3B0F FREE
FCP 3B10 FREE , FCP 3B11 FREE , FCP 3B12 FREE , FCP 3B13 FREE
FCP 3B14 FREE , FCP 3B15 FREE , FCP 3B16 FREE , FCP 3B17 FREE
...
- 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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