[DRBD-user] repeatable, infrequent, loss of data with DRBD

Igor Cicimov icicimov at gmail.com
Fri Aug 21 01:05:24 CEST 2015

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


On 20/08/2015 6:58 PM, "Matthew Vernon" <mcv21 at cam.ac.uk> wrote:
>
> Hi,
>
> > Are you sure LVM only uses the DRBD device to write data to and not the
> > backend disk? We've had this issue in the past and this was caused by
> > LVM which scans all the devices for PV's, VG's and LV's and sometimes
> > pick the wrong device. You can fix this by changing the filter in the
> > lvm.conf file. If you change this, don't forget to remove the LVM cache
> > file first and then to rescan everything.
>
> I'm reasonably sure, yes - I have LVM configured to use drbd devices thus:
>
>     preferred_names = [ "^/dev/drbd" ]
>
> Regards,
>
> Matthew
>
And since you use dual primary mode you also use cLVM too and cluster aware
file system like gfs or ocfs2 right?
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