[clue] Ack! (recovering busted disks - (fixed)

[Mike Bean]

Thanks for the tip.   At least at first blush it looks like I can't use
dump and restore.   They only work on devices and not on logical volumes.
At least not on my logical volumes (I'm getting bad magic number in
super-block.)   I think I'm going to play with it a  little while longer,
see if I can figure out if it really can't handle or if I'm just PEBKAC.
Could also be this box.  I'm testing it on a box that I don't really care
if it breaks

dump -0u -f /mnt/mbean /dev/mapper/rootvg-homelv
  DUMP: Date of this level 0 dump: Tue Apr 26 14:00:16 2016
  DUMP: Dumping /dev/mapper/rootvg-homelv (/home) to /mnt/mbean
/dev/mapper/rootvg-homelv: Bad magic number in super-block while opening
filesystem
  DUMP: The ENTIRE dump is aborted.

Mike B

On Mon, Apr 25, 2016 at 12:34 PM, Chris Fedde <chris at fedde.us> wrote:

> I say this every time backups get mentioned but I have to say it again.  I
> like dump.  Dump and restore are a perfect set of tools that solve the
> backup problem neatly and flexibly.  And so far have not let me down for
> either fat finger recovery or for full disk recovery.
>
> I find it silly that this tool that is integrated with the OS and woks so
> well is overlooked by everyone. Even by the certification folks.
>
> Let me say it again.  I like dump. Maybe I need to write up a blog article
> or something.
> On Apr 19, 2016 6:33 PM, "Mike Bean" <beandaemon at gmail.com> wrote:
>
>> Yeah, I know ; )
>>
>> Mike B
>>
>> On Tue, Apr 19, 2016 at 3:49 PM, David L. Anselmi <anselmi at anselmi.us>
>> wrote:
>>
>>> Mike Bean wrote:
>>> > Theorhetically yes, and we did that, but as predicted, since I #1
>>> noticed
>>> > the box was down and #2 attempted to fix it, I therefore have
>>> ownership of
>>> > it now.   Have to look into a cheap scale able method to get actual
>>> backups
>>> > and stop depending on snap shots.   I suppose I could just back it
>>> up.  But
>>> > it's only a matter of time before someone notices the Jenkins box has
>>> > backups and complains that all the other boxes don't.
>>>
>>> You need to get a new job. Life's too short...
>>>
>>> And for everyone else, this is an example why you vote against whatever
>>> the government wants to
>>> spend money on.
>>>
>>> Dave
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>>
>>
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