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184 The Virtualization Cookbook for Red Hat Enterprise Linux 5.2
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Making a file system from the logical volume
Now you have a logical volume. Use the mke2fs command to create a file system out of it. The
-j flag adds a journal so it will be of type ext3:
# mke2fs -j /dev/homevg/homelv
mke2fs 1.36 (05-Feb-2005)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
402400 inodes, 803840 blocks
40192 blocks (5.00%) reserved for the super user
...
The file system created from the logical volume is now ready to be mounted.
13.1.5 Updating the file system table
You could now mount the file system manually. However, if you add the mount to the file
system table file, /etc/fstab, you can effectively test the change by using the mount
command with only one argument. Add one line to the file:
# cd /etc
# vi fstab
LABEL=/ / ext3 defaults 1 1
/dev/dasdb1 swap swap defaults 0 0
/dev/dasdc1 swap swap defaults 0 0
/dev/homevg/homelv /home ext3 defaults 0 0
...
Mount the /home/ file system with one argument. Use the ls command to verify that there is
no data in the logical volume except the lost+found/ directory. Use the df -h command to
verify that it is mounted.
# mount /home
# ls /home
lost+found/
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/dasda1 2.3G 1.2G 1016M 53% /
tmpfs 124M 0 124M 0% /dev/shm
/dev/mapper/homevg-homelv
9.1G 149M 8.5G 2% /home
Moving data from existing file system
You may have noticed that there may be some data in the directory which will serve as the
mount point. To complete the addition of the logical volume, we recommend that you move
any data from the existing directory to the new logical volume. First unmount the logical
volume and view the contents of the /home/ directory:
# umount /home
# ls -F /home
ldapuser1/
- The Virtualization Cookbook 1
- Linux 5.2 3
- October 2008 3
- First Edition (October 2008) 4
- Contents 5
- Contents v 7
- Contents vii 9
- Trademarks 12
- The team that wrote this book 13
- Chapters and appendixes 15
- Conventions 17
- Comments welcome 17
- 1.1 What is virtualization 20
- 1.2 This book’s approach 21
- 1.4 Infrastructure design 22
- Planning 25
- 2.1 Bill of materials 26
- 2.2 z/VM conventions 27
- 2.3 Disk planning 28
- DASD versus SCSI/FCP 29
- 3390-3s versus 3390-9s 29
- Disk storage per Linux image 29
- 2.4 Memory planning 30
- 2.5 Password planning 30
- 2.6 Planning worksheets 31
- 2.7 Blank worksheets 34
- 2.7.2 z/VM DASD worksheet 35
- Configuring a desktop machine 37
- Figure 3-2 Setting logging 39
- Saving sessions 41
- 3.2 Setting up a VNC client 42
- 3.3 3270 emulators 43
- 4.1 Installing z/VM from DVD 46
- ==> instplan 50
- Running INSTDVD 52
- Figure 4-8 Load window 53
- ==> cold drain noautolog 54
- ==> no 54
- ==> disc 54
- 4.2 Configuring TCP/IP 56
- not specified 62
- 4.6 Adding paging volumes 65
- Using the CPFORMAT EXEC 67
- 4.6.4 Testing the changes 71
- 4.8.2 Testing the changes 78
- 4.9.1 VM security products 79
- ==> sampnss cms 86
- Servicing z/VM 89
- 5.1 Applying a PTF 90
- 6.4 Enabling the NFS server 106
- 7.2.3 Configuring VDISK swap 128
- 7.2.4 Configuring yum 128
- 7.2.5 Adding additional RPMs 129
- 7.2.10 Configuring SSH keys 134
- 4 6763) is running 135
- 8.2.4 Adding additional RPMs 145
- 8.2.8 Configuring SSH keys 145
- 8.2.9 Rebooting the system 146
- 8.2.10 Verifying the changes 146
- Detach the source disks 151
- Detach the target disks 154
- IPL the target system 154
- 9.3.2 Using the clone script 157
- FLASHCOPY 159
- Installation Server 159
- Master Image 159
- 9.5 Reviewing system status 163
- LNXMAINT 164
- Delete these 167
- Servicing Linux with Red Hat 171
- 12.1.2 Testing Apache 179
- 12.1.3 Turning on a firewall 179
- 12.1.6 Apache resources 182
- Start the LDAP service 184
- Deleting duplicate users 186
- Set a password 189
- 12.3.4 Adding a Samba user 191
- 12.3.6 Testing your changes 192
- 12.3.7 Configuring printing 193
- 12.4.1 Additional resources 194
- Linux kernel development 195
- Web development 195
- Miscellaneous recipes 197
- 13.1 Adding a logical volume 198
- Volume Group - optvg 200
- Creating a physical volume 204
- Extending the volume group 204
- /var/lib/ldap 205
- Configuring LDAP 206
- Configuring automount 207
- 13.4 Rescuing a Linux system 208
- Monitoring z/VM and Linux 211
- INIDICATE LOAD 212
- INDICATE QUEUES EXP 213
- Getting help 214
- Determining who is logged on 214
- Determining storage or memory 215
- Determining software level 215
- 14.2.3 Configuring PERFSVM 218
- Using a Web browser interface 220
- Using a 3270 interface 222
- 14.3 Monitoring Linux 223
- PURGE NSS NAME MONDCSS 228
- CP SAVESEG MONDCSS 228
- References 229
- Quick reference sheets 230
- Prefix commands 231
- :help give help 232
- Appendix B. z/VM source code 233
- The CPFORMAT EXEC 234
- The CHPW540 XEDIT macro 238
- The LABEL540 EXEC 241
- The LABEL540 XEDIT macro 243
- Linux source code 245
- Related publications 257
- Online resources 258
- How to get Redbooks 258
- Help from IBM 258
- Hat Enterprise Linux 5.2 265
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