The Virtualization Cookbook for SLES 10 SP2 - z/VM - IBM

4 If you specified a value for 3 above (VG_NAME), specify the logical volume
name of the root file system.
► Save the file and log off root.
► Log in to LINUX01.
► Answer n to the question Do you want to IPL Linux from minidisk 100? y/n. Verify that
the minidisks at addresses 100 and 101 and the VDISK at addresses 300 and 301 are
read/write with the QUERY DASD command:
==> q da
00: DASD 0100 3390 UM63A9 R/W 3338 CYL ON DASD 63A9 SUBCHANNEL = 0000
00: DASD 0101 3390 UM63A9 R/W 3338 CYL ON DASD 63A9 SUBCHANNEL = 0001
00: DASD 0190 3390 610RES R/O 107 CYL ON DASD 6280 SUBCHANNEL = 0009
00: DASD 0191 3390 UM6289 R/O 300 CYL ON DASD 6289 SUBCHANNEL = 000C
00: DASD 019D 3390 UV6283 R/O 146 CYL ON DASD 6283 SUBCHANNEL = 000A
00: DASD 019E 3390 UV6283 R/O 250 CYL ON DASD 6283 SUBCHANNEL = 000B
00: DASD 0300 9336 (VDSK) R/W 524288 BLK ON DASD VDSK SUBCHANNEL = 000E
00: DASD 0301 9336 (VDSK) R/W 1048576 BLK ON DASD VDSK SUBCHANNEL = 000F
00: DASD 0592 3390 UV6284 R/O 70 CYL ON DASD 6284 SUBCHANNEL = 000D
► Log off LINUX01.
You are now be ready to clone to this new user ID.
9.4.3 Using the clone script
To use the clone script, perform the following steps:
► Go back to your an SSH session to the controller.
► Verify that the clone script is in your PATH with the which command:
# which clone
/usr/sbin/clone
► The clone script can operate in two modes. The first where the DASD information is
provided on the command line, and the second where the DASD information is included in
the new user ID’s configuration file. Running clone with no arguments prints a usage
message as follows:
# clone
Usage: clone [-v] sourceID targetID [rootMinidisk [minidisk1 minidisk2..]]
Switches
-v Verbose output
Required
sourceID the z/VM user id you want to clone from
targetID the z/VM user id you want to clone to
Optional
rootMinidisk the minidisk address that contains the root filesystem
minidisk1..n additional minidisks that should be copied
The sourceID is the z/VM ID of the master Linux image and targetID is the z/VM ID of the
target (LINUX01 in this example). These values are always required.
In the following examples, DASD is set to 100-101, which implies that minidisks located at
virtual addresses 100 and 101 are copied. The 300 and 301 VDISKs are omitted because
SWAPGEN automatically creates them each time the user logs on. The DASD_ROOT value
specifies which one of these minidisks contains the Linux root file system (/).
The script exits if either the golden image or the clone image is logged in. The script first
attempts to copy the disks with FLASHCOPY via the vmcp module or command. If an error is
154 The Virtualization Cookbook for RHEL 6