On Thu, 5 May 2011, Les Mikesell wrote:
> On 5/5/2011 11:11 AM, Lamar Owen wrote:
>>
>>>> I do dd imaging quite frequently, and as long as everything is LBA48
>>>> capable and setup, [snippage] .... using dd .... booted from rescue or
>>>> live media of the OS that's installed...
>>
>>> Clonezilla-live is a handy, faster way to do this.
>>
>> I've recast my original message slightly, as you've missed a critical point:
>> I use the cloning tool from the rescue or live media of the OS that's
>> installed. There are a number of reasons for this, not the least of which
>> is that LVM, RAID, and some other things behave differently depending upon
>> the kernel, lvm tools, etc, that's running the clone.
>
> I generally try to avoid layers that are likely to have breakage between
> different versions. Backwards compatibility is a good thing, as is the
> ability to move disks around among different hosts.
>
> That said, Clonezilla doesn't deal with software raid in the disk image
> mode - even raid1 where it should be simple. You can do single
> partitions at a time though, and then it is agnostic about the
> underlying layers but you have to deal with making it bootable yourself.
I can recommend ReaR (Relax and Recover) for migrations and cloning
systems. I have been working wit the Relax and Recover project for the
past few months together with a colleague and it now covers a lot of
situations:
- HWRAID (SmartArray), SWRAID, DRBD, partitions, encrypted
partitions, LVM
- It supports bootable tapes (OBDR), ISO images and USB media
- It supports backup software for restoring (like Bacula, TSM, rsync and
others)
- And it can also take care of backups (using rsync, tar) using different
solutions (NFS, USB, Samba, ...)
- It's modular, so with little effort you can implement your own workflow
or use-case
However I would stress to test a complete disaster recover scenario for
your systems (different technologies) in order to understand if everything
is supported. You don't want to realize a problem in disaster-mode :)
But for the use-cases we have, the current trunk is very usable and
flexible to support restoring on different hardware. Even with different
controllers/disks etc... During recovery you can still adapt the layout
and make changes to your wishes before restoring.
We are preparing a new stable minor release (without the new layout code
enabled by default), but after that release there should be a new major
release covering everything I mentioned by default.
If you need more help, feel free to join the ReaR mailinglist on
sourceforge and ask your questions :)
http://rear.sourceforge.net/
And if you happen to go to LinuxTag, we're having two discussion sessions
for developers and users on Wednesday and Thursday.
--
-- dag wieers, [email protected], http://dag.wieers.com/
-- dagit linux solutions, [email protected], http://dagit.net/
[Any errors in spelling, tact or fact are transmission errors]
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