Trouble with backup Post: 302959763

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Operating Systems Solaris Trouble with backup Post 302959763 by dreiak on Thursday 5th of November 2015 08:42:09 PM

11-05-2015

Registered User

Trouble with backup

At work I am running a solaris 10 server with a ZFS filesystem. I am unfortunately not a solaris expert by any stretch of the imagination, and the relative difficulty in doing what I consider to be a super basic operation using solaris is driving me insane.

It is my job to figure out some way (or ideally make a script) that will make a complete bootable clone of an entire hard disk from one drive to another.

Drive one is c1t0d0 (bay 0), drive two is c1t1d0 (bay 1).

I must be able to remove the 2nd drive for off site storage, and I must be able to swap the drive in bay 0 with the off site drive and boot the server up completely from the backup.

I have been trying to figure this out for weeks. I tried using raidctr -c c1t0d0 c1t1d0, now I can't boot from either drive. (including when both are inserted). The server will just stick in a looped boot sequence.

I tried using dd commands as well, which appeared to work, but I couldn't boot off the drive. Part of the problem is that I am not a solaris guru, and I am definitely missing something to make this work. dd seemed like the best candidate, as the hard disks are identical. If someone knows that this will work, I need to know EXACTLY what to do, and not approximately.

I am avoiding using snapshots because it sounds so complicated, and though I have seen that it is possible to make a clone from snapshots, it does not sound like I will really get what I am looking for out of this solution, but I am open to anything.

TLDR: How do I get two HDDs to be independently bootable and have exactly the same information on them? Why isn't there some super easy command for this in Solaris?

dreiak

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LEARN ABOUT BSD

rxformat

RXFORMAT(8)						      System Manager's Manual						       RXFORMAT(8)

NAME

       rxformat - format floppy disks (2.11BSD)

SYNOPSIS

       rxformat special

DESCRIPTION

       The rxformat program formats a diskette in the specified drive associated with the special device special.  Special is normally /dev/rrx0?,
       for drive 0, or /dev/rrx1?, for drive 1, where ``?'' is either "a" or "b" to indicate single or double density access.  The ``raw''  device
       must  be  used.	 Single  density is compatible with the IBM 3740 standard (128 bytes/sector).  In double density, each sector contains 256
       bytes of data.

       Before formatting a diskette rxformat prompts for verification if standard input is a tty (this allows a user to cleanly abort  the  opera-
       tion; note that formatting a diskette will destroy any existing data).  Formatting is done by the hardware.  All sectors are zero-filled.

DIAGNOSTICS

       `No  such  device'  means that the drive is not ready, usually because no disk is in the drive or the drive door is open.  Other error mes-
       sages are selfexplanatory.

FILES

       /dev/rrx??

SEE ALSO

       rx(4)

AUTHOR

       Helge Skrivervik

BUGS

       A floppy may not be formatted if the header info on sector 1, track 0 has been damaged.	Hence, it is not possible to format  a	completely
       degaussed disk.	(This is actually a problem in the hardware.)

3rd Berkeley Distribution					 November 17, 1996						       RXFORMAT(8)