Solved: How to create a flar image in Solaris and restore it for recovery

Flar image is a good way to recover your system from crashes. In this post we will see how to create a flar image and use it for recovery of the system.

Flar Creation

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  • It is recommended that you create flar image in single user mode. Shutdown server and boot it in single user.
#init 0
ok>boot -s
  • In this example, the FLAR image will be stored to a directory under /flash. The FLAR image will be named recovery_image.flar .
flarcreate -n my_bkp_image1 -c -S -R / -x /flash /flash/recovery_image.flar
  • Once the flar image is created. Copy it to your repository system. Here we are using NFS.
cp -p /flash/recovery_image.flar /net/FLAR_recovery/recovery_image.flar

 

Flar Restoration

  • To restore a flar image start the boot process.
  • You can boot server either with Solaris CD/DVD or Network
  • Go to the ok prompt and run one of the below command:-
For booting the boot media (installation CD/DVD).
 ok> boot cdrom

If you want to boot from network do.
 ok> boot net
  • Provide the network, date/time, and password information for the system.
  • Once you reach the “Solaris Interactive Installation” part, select “Flash”.
  • Provide the path to the system with location of the FLAR image:
    /net/FLAR_recovery/recovery_image.flar
  • Select the correct Retrieval Method (HTTP, FTP, NFS) to locate the FLAR image.
  • At the Disk Selection screen, select the disk where the FLAR image is to be installed.
  • Choose not to preserve existing data.(Be sure you want to restore on selected disk)
  • At the File System and Disk Layout screen, select Customize to edit the disk slices to input the values of the disk partition table from the original disk.
  • Once the system is rebooted the recovery is complete.

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