I've tried everything I can think of to get mapper to pick up the drbd0 device, and all failed. I put in a symlink (ln -s /dev/drbd0 /dev/mapper/DRBD0) but Oracle VM doesn't see it. I'm guessing it's requiring multipath to access the resource.
I'll try some Logical Volumes and see if I can make Oracle VM see those. I know I can build a PV/VG/LV from a drbd resource. Running an iSCSI target and initiator on localhost on this machine is getting a bit too weird, even for Oracle<g>. Thanks for the tips! Dan -----Original Message----- From: Kaloyan Kovachev [mailto:kkovac...@varna.net] Sent: Tuesday, April 10, 2012 9:53 AM To: Dan Barker Cc: drbd List Subject: Re: [DRBD-user] multipathd ignores my drbd0 I think you can't use DRBD device directly with multipath, but if you export it via iSCSI and then import it back it is possible. Another option is LVM over DRBD -> device in /dev/mapper Another one is just a symlink in /dev/mapper from udev rule On Tue, 10 Apr 2012 09:41:13 -0400, "Dan Barker" <dbar...@visioncomm.net> wrote: > How do I get multipathd to notice my drbd block devices? > > RHEL5 (Oracle VM 3.0.3.127, actually), 2.6.32.21-45xen. > Drbd 8.4.1: > multipath-tools says v0.4.9. I can't seem to find the multipath version. > > resource r0 { > on OVMPam { > volume 0 { > device /dev/drbd0 minor 0; > disk /dev/sdb; > meta-disk internal; > } > address ipv4 172.30.0.167:7789; > } > on DRPam { > volume 0 { > device /dev/drbd0 minor 0; > disk /dev/sdb; > meta-disk internal; > } > address ipv4 172.30.0.170:7789; > } > startup { > become-primary-on OVMPam; > } > } > > As-distributed global. > > All multipath commands reply "Apr 09 08:10:50 | DM multipath kernel driver > not loaded", as if no devices were detected at boot time. > > I have drbd start before multipathd. > > Relax, I have no plans to multipath to this device, Oracle VM looks > only in > /dev/mapper for repository candidates. > > New 10 April: Ping! Anyone have any ideas? Even a different forum in which > to ask? > > _______________________________________________ > drbd-user mailing list > drbd-user@lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user _______________________________________________ drbd-user mailing list drbd-user@lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user