[ClusterLabs] Removing DRBD w/out Data Loss?

Eric Robinson eric.robinson at psmnv.com
Wed Sep 9 08:10:54 EDT 2020


Valentin --

With DRBD stopped, wipefs only showed one signature...

[root at 001db01 ~]# wipefs /dev/vg0/lv0
offset               type
----------------------------------------------------------------
0x438                ext4   [filesystem]
                     UUID:  2035aabe-b6e1-4313-a022-9518eb7489e6

So I just mounted the filesystem...

[root at 001db01 ~]# mount /dev/vg0/lv0 /mnt
[ 7712.478905] EXT4-fs (dm-2): 35 orphan inodes deleted
[ 7712.484594] EXT4-fs (dm-2): recovery complete
[ 7712.506344] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: (null)

...and all my data seems to be there? Did I miss something? I don't understand. Where did the DRBD partition go?


> > After stopping DRBD, wipefs /dev/vg1/lv1 should list the signatures on
> > the device. Removing *only* the DRBD signature will give a filesystem
> > accessible directly on /dev/vg1/lv1. Make sure to use the --backup option.
> >
> > --
> > Valentin

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