drbd-user March 2010 archive
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drbd-user: Re: [DRBD-user] dual primary mode with which FS

Re: [DRBD-user] dual primary mode with which FS

From: Stefan Seifert <nine_at_nospam>
Date: Wed Mar 24 2010 - 10:10:25 GMT
To: drbd-user@lists.linbit.com

On Wednesday 24 March 2010 10:52:30 Christian Iversen wrote:
> On 2010-03-24 10:42, Stefan Seifert wrote:
> > On Wednesday 24 March 2010 09:50:44 Christian Iversen wrote:
> >> Are you sure that LVM can create the snapshot without updating the
> >> metadata on the device? Because that's not allowed.
> >
> > Actually it never occurred to me that LVM could change the volume. But I
> > could not imagine any reason for it to do that. And indeed I'm using
> > snapshots for backing up my DRBD volumes without any problem, so my
> > guess should be correct.
> Well not the volume as such, just the LVM metadata around the volume (I
> assume you mean the fs volume, on top of LVM, on top of DRBD).

No, you just missed me writing that DRBD would be on top of LVM, so the LVM
meta data is outside DRBD's area and may be changed at will.

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