[DRBD-user] Can't find LV from second node on a Primary/Primary DRBD Device

markus at marcap.de markus at marcap.de
Mon Oct 3 12:02:32 CEST 2011

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


Dear all,

I want to build an HA setup with virtual machines on a two hardware  
node setup. I already setup a nested LVM DRBD configuration. But from  
the second node I can't see the lv's from the drbd device; pvscan  
displays it.

Has anybody an idea whats wrong with my setup? I think I need a  
primary/primary drbd device because if one hardware node fails I want  
to start the KVM container from the other one; therefore I need the  
latest data of the KVM container.

Please find some logs below...

Thanks a lot for your help in advance!

Best regards,
Markus

Client00:
---------
client00:~# lvscan
   ACTIVE            '/dev/pve/swap' [15.00 GB] inherit
   ACTIVE            '/dev/pve/root' [96.00 GB] inherit
   ACTIVE            '/dev/pve/data' [1.32 TB] inherit
   ACTIVE            '/dev/pve/r0' [60.00 GB] inherit
   ACTIVE            '/dev/replicated/vm-101-disk-1' [10.00 GB] inherit
client00:~# pvscan
   PV /dev/sda2    VG pve          lvm2 [1.82 TB / 343.99 GB free]
   PV /dev/drbd0   VG replicated   lvm2 [60.00 GB / 50.00 GB free]
   Total: 2 [1.88 TB] / in use: 2 [1.88 TB] / in no VG: 0 [0   ]
client00:~# cat /proc/drbd
version: 8.3.10 (api:88/proto:86-96)
GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by  
phil at fat-tyre, 2011-01-28 12:17:35
  0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r-----
     ns:81968 nr:28 dw:28 dr:84752 al:0 bm:15 lo:0 pe:0 ua:0 ap:0 ep:1  
wo:b oos:0

Client01:
---------
client01:~# lvscan
   ACTIVE            '/dev/pve/swap' [4.00 GB] inherit
   ACTIVE            '/dev/pve/root' [96.00 GB] inherit
   ACTIVE            '/dev/pve/data' [194.14 GB] inherit
   ACTIVE            '/dev/pve/r0' [60.00 GB] inherit
client01:~# pvscan
   PV /dev/sda2    VG pve          lvm2 [698.13 GB / 343.99 GB free]
   PV /dev/drbd0   VG replicated   lvm2 [60.00 GB / 50.00 GB free]
   Total: 2 [758.13 GB] / in use: 2 [758.13 GB] / in no VG: 0 [0   ]
client01:~# cat /proc/drbd
version: 8.3.10 (api:88/proto:86-96)
GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by  
phil at fat-tyre, 2011-01-28 12:17:35
  0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r-----
     ns:28 nr:81968 dw:81948 dr:2096 al:2 bm:14 lo:0 pe:0 ua:0 ap:0  
ep:1 wo:b oos:0



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