[DRBD-user] Upgrade problem with 0.8

Lars Ellenberg lars.ellenberg at linbit.com
Thu Apr 23 10:28:33 CEST 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Wed, Apr 22, 2009 at 05:16:19PM +0200, Christian Iversen wrote:
> Hi all
> 
> We're trying to upgrade our 0.7 DRBD disks to 0.8.

no.
you are not.
there is no such thing as drbd 0.8
there is only drbd 8.0.x (currently: 8.0.16)
and 8.3.y (currently 8.3.1).

> We're running 2 machines, ares and athena, in a heartbeat-failover 
> cluster. We've been following this guide:
> 
> http://fghaas.wordpress.com/2007/10/03/step-by-step-upgrade-from-drbd-07-to-drbd-8/
> 
> step-by-step.
> 
> However, we get this rather ominous warning when doing the "drbdadm 
> create-md" step:
> 
>  > md_offset 310068375552
>  > al_offset 310068342784
>  > bm_offset 310058876928
>  >
>  > Found ext3 filesystem which uses 302670080 kB
>  > current configuration leaves usable 302791872 kB
>  >
>  >  ==> This might destroy existing data! <==
>  >
>  > Do you want to proceed?
>  > [need to type 'yes' to confirm]
> 
> After looking at the kB sizes, it seems there are 118.9375 MB space left 
> for meta-data. Maybe this is not sufficient?


and if you had used one of these mentioned "latest" releases of DRBD,
this message would have already been softened, as it apparently scared
too many people (including you).

the softened message reads

  Even though it looks like this would place the new meta data into
  unused space, you still need to confirm, as this is only a guess.


so you are good, your data is fine,
you may proceed.

	:)

cheers,

-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
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