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

Tue Apr 26 14:16:26 MDT 2016

I just verified that it works fine on LVM.  It should look like this:

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

The /mnt/mbean.dump is the destination file to dump to.  The /home/mbean is
filesystem you wish to dump from.

On Tue, Apr 26, 2016 at 8:10 PM, Mike Bean <beandaemon at gmail.com> wrote:

> Sure looks that way.  Works on physical devices, didn't seem to care for
> my syntax.   It's dump -0u -f (destination) (source)?
>
>
>
> On Tue, Apr 26, 2016 at 2:08 PM, Charles Burton <
> charles.d.burton at gmail.com> wrote:
>
>> 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
>>>>>> _______________________________________________
>>>>>> clue mailing list: clue at cluedenver.org
>>>>>> For information, account preferences, or to unsubscribe see:
>>>>>> http://cluedenver.org/mailman/listinfo/clue
>>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> clue mailing list: clue at cluedenver.org
>>>>> For information, account preferences, or to unsubscribe see:
>>>>> http://cluedenver.org/mailman/listinfo/clue
>>>>>
>>>>
>>>> _______________________________________________
>>>> clue mailing list: clue at cluedenver.org
>>>> For information, account preferences, or to unsubscribe see:
>>>> http://cluedenver.org/mailman/listinfo/clue
>>>>
>>>
>>>
>>> _______________________________________________
>>> clue mailing list: clue at cluedenver.org
>>> For information, account preferences, or to unsubscribe see:
>>> http://cluedenver.org/mailman/listinfo/clue
>>>
>>
>>
>> _______________________________________________
>> clue mailing list: clue at cluedenver.org
>> For information, account preferences, or to unsubscribe see:
>> http://cluedenver.org/mailman/listinfo/clue
>>
>
>
> _______________________________________________
> clue mailing list: clue at cluedenver.org
> For information, account preferences, or to unsubscribe see:
> http://cluedenver.org/mailman/listinfo/clue
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://cluedenver.org/pipermail/clue/attachments/20160426/30b23e4c/attachment.html 