How To Recover LVM based install

[Michael Abboud]

Hello,

I have a customer who uses a PowerEdge 1950 server, running the Dell supplied RHEL v4 installation.

Bear in mind that to install RHEL on the server, you must use the Dell supplied installation CD, which does the platform configuring for you.  This means that RHEL installs onto a predefined set of partitions (/, /var, /usr, /home etc.) and also that LVM2 is in use.  The customer doesn't have a choice to use LVM2 or not, nor to use a different set of partitions than those defined.

The problem we have is to work out the best way restore this system in case of disaster.

We have a test server, also a PowerEdge 1950 but without hardware RAID (the production server above uses hardware RAID) that we wish to restore to.

The customer uses the CommVault backup product, which does a flat file backups to tape, and CommVault provides a Linux client for restores from backup.

I have tried the following approach:

1.  Install RHEL v4 onto a USB pocket drive, and also install CommVault Linux client
2.  Boot the USB drive on the test server
3.  Configure the PowerEdge internal disk using fdisk, lvm commands etc
4.  Using CommVault, restore backups to internal disk partitions
5.  Using grub-install to write MBR to internal disk
6.  Attempt to boot internal disk

The problem is in step 6 - I cannot get the internal disk to boot

I'm not worried too much about the technical details at this stage, only whether the approach is right or not.  This especially since LVM2 is involved, and that Dell doesn't seem to let me not run it.

I am interested in Dell's recommended approach to this problem.

Any information on this will be greatly appreciated

Regards,
Michael Abboud

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