Dne 29.12.2016 v 21:28 knebb@knebb.de napsal(a):
Hi all, I am using LVM for several years but now I face an issue where I have no clue how to deal with. I want to have a VG on top of a drbd device (Distributed Replicated Block Device) which should not be an issue according to docs: https://www.drbd.org/en/doc/users-guide-83/s-lvm-drbd-as-pv Unfortunately I am always getting "duplicate device" errors as LVM recons a pv on /dev/sdb (underlying device for drbd) as well as on /dev/drbd0 Now I tried to configure filters to match my setup. But it seems I do not understand the filter rules. I need to enable /dev/sda incl. all partitions. (for root) I need to disable /dev/sdb at all as it is the device for drbd! I need to enable /dev/drbd0 as the "real" PV. I can disable all others. So I tried: filter = [ "r|sdb.*/|","a|drbd0/|","a|.*/|" ]
Hi Just check the 'comment' for filters in lvm.conf - there is stated you should NOT mix 'r' & 'a' together (there is even no need for this in 99.9999%) So please focus on keeping things simple: - either use plain list of rejects 'r' - or set 'white-list' with all 'a' finished with 'r .*' Every other usage does require quite good understanding how the devices are scanned and how many accessible paths for them exists in today's /dev directory. To to be exact in your case: Use just: [ "r|/dev/sdb|" ] OR (if you want to use just drdb0) : [ "a|drbd0/|", "r|.*/|" ] (eventually add more 'a' with more PV devices you have) Regards Zdenek _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
