[DRBD-user] Downgrading 8.4.1 to 8.3.12

Jose Ildefonso Camargo Tolosa ildefonso.camargo at gmail.com
Thu Mar 8 05:13:43 CET 2012

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


Ok, direct question here: why do you want to downgrade? (I considered
a downgrade once, but then was able to fix the issues I was having,
and just stayed with a patched 8.4.1)

On Tue, Feb 28, 2012 at 7:02 PM, William Seligman
<seligman at nevis.columbia.edu> wrote:
> Is there any way of downgrading 8.4.1 to 8.3.12 without erasing the drbd
> partition? When I try to start drbd 8.3.12 on a 8.4.1 partition, I get:
>
>
> # service drbd start
> Starting DRBD resources: [
> admin
> no suitable meta data found :(
> Command '/sbin/drbdmeta 0 v08 /dev/md2 internal check-resize' terminated with
> exit code 255
> drbdadm check-resize admin: exited with code 255
> d(admin) 0: Failure: (119) No valid meta-data signature found.
>
>        ==> Use 'drbdadm create-md res' to initialize meta-data area. <==
>
>
> [admin] cmd /sbin/drbdsetup 0 disk /dev/md2 /dev/md2 internal --set-defaults
> --create-device --fencing=resource-and-stonith  failed - continuing!
>
> s(admin) n(admin) ].
>
>
>
>
> OK, but when I try the suggested command:
>
> # drbdadm create-md admin
> pvs stderr:        /dev/md2: Skipping (regex)
> pvs stderr:  Failed to read physical volume "/dev/md2"
> pvs stderr:      Unlocking /var/lock/lvm/P_global
> pvs stderr:        _undo_flock /var/lock/lvm/P_global
>
> md_offset 2873200996352
> al_offset 2873200963584
> bm_offset 2873113276416
>
> Found LVM2 physical volume signature
>  2805774684 kB left usable by current configuration
> Could not determine the size of the actually used data area.
>
> Device size would be truncated, which
> would corrupt data and result in
> 'access beyond end of device' errors.
> If you want me to do this, you need to zero out the first part
> of the device (destroy the content).
> You should be very sure that you mean it.
> Operation refused.
>
> Command 'drbdmeta 0 v08 /dev/md2 internal create-md' terminated with exit code 40
> drbdadm create-md admin: exited with code 40
>
>
> Since I'm not certain that the problems I'm having with cman+pacemaker+drbd are
> caused by my drbd version, I'm reluctant to do this (and spend several hours
> restoring the partitions) unless I absolutely have to.
> --
> Bill Seligman             | Phone: (914) 591-2823
> Nevis Labs, Columbia Univ | mailto://seligman@nevis.columbia.edu
> PO Box 137                |
> Irvington NY 10533 USA    | http://www.nevis.columbia.edu/~seligman/
>
>
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>



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