PRIMECLUSTER Installation and Administration Guide4.6 Cloud Services

6.3 Procedure for Restoring OS with the Snapshot Function

If OS is restored with the snapshot function of FJcloud-O, perform the following procedure.

Note

If GLS is being used, when OS is restored from the snapshot according to the procedures described in this section, an interface configuration file of the physical network is rewritten to the initial state at the time when the virtual server is created. This duplicates the IP address of the physical NIC and the IP address of the GLS virtual interface, and functions or applications that are using the IP address of the virtual interface may not operate normally.

Therefore, if GLS is being used, acquire the snapshot with the following procedure.

[Procedure for acquiring the snapshot]

1. Back up the interface configuration file of the physical network used in GLS.

   Example:

   # cp /etc/sysconfig/network-script/ifcfg-eth1 /etc/sysconfig/network-script/ifcfg-eth1.bak

2. Set the automatic startup of RMS to OFF.

   # hvsetenv HV_RCSTART 0
   # hvsetenv HV_RCSTART
   0 <- Check if "0" is output

3. Stop the virtual server from which the snapshot is acquired.

4. Acquire the snapshot.

5. After starting the virtual server, start RMS, and set the automatic startup to ON.

   Startup of RMS:

   # hvcm -s <SysNode name of the virtual server from which the snapshot is acquired>

   Automatic startup of RMS is set to ON:

   # hvsetenv HV_RCSTART 1
   # hvsetenv HV_RCSTART
   1 <- Check if "1" is output