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List:       linux-lvm
Subject:    Re: [linux-lvm] lvm.conf backup section
From:       Zdenek Kabelac <zkabelac () redhat ! com>
Date:       2018-12-03 14:56:22
Message-ID: 10d33296-fd02-b328-18ae-c819faacbc93 () redhat ! com
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Dne 03. 12. 18 v 13:10 Far Had napsal(a):
> Hi, Thank you Zdenek
> You used "makes sure" phrase in your sentence:
> "this makes sure you should have  files at least 10 days back as well"
> 
> I was refering to that !
> 

Hi

Oh - in that case I've been emphasizing the fact, that lvm2 will not REMOVE,
those. So nothing in the sense it will keep creating if they get missing :) so 
something completely different.

If the admin runs  'rm -f /etc/lvm/archive/*' all archives are simply gone.
(so i.e. info about executed command is lost forever! as the kernel does not 
hold all the info)

> So the whole thing is about PV metadata area and not /etc/lvm , am I correct?

Vise versa -    /etc/lvm/lvm.conf { backup/archive = 1 }  is purely about 
/etc/lvm/archive.

There is *NO* control for user to influence PV metadata backup other then 
limiting the size of metadata area - the smalller the area is - the smaller 
'ring-buffer' will be - the less older metadata could be found there.

Regards

Zdenek

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