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

[Charles Burton]

It doesn't work quite like you're thinking.  Dump doesn't care about LVM,
not at least as far as I know.  Try:

dump -0u -f /mnt/mbean /home/mbean

On Tue, Apr 26, 2016 at 8:04 PM, Mike Bean <beandaemon at gmail.com> wrote:

> 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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>>
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>
>
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