May be but this don't work.
I create LVM volume heartbeat on both nodes. Set ocfs mode to local.
o2cb add-heartbeat mdtxcluster /dev/c/heratbeat
On both nodes.
o2cb start-heartbeat mdtxcluster
on both nodes
ocfs2: Mounting device (147,0) on (node 0, slot 0) with ordered data mode.
[ 1290.746345] o2dlm: Leaving domain 3D69F9BD7AF24C59BB600A8D7B1D4770
[ 1290.788991] ocfs2: Unmounting device (147,0) on (node 0)
[ 1828.717874] o2hb: Heartbeat stopped on region
3D69F9BD7AF24C59BB600A8D7B1D4770 (dm-0)
[ 2202.976390] o2hb: Heartbeat started on region
FD5342AE132B4A40A3DE39D0406252E5 (dm-1)
[ 2205.008194] o2hb: Region FD5342AE132B4A40A3DE39D0406252E5 (dm-1) is
now a quorum device
[ 2229.339352] o2dlm: Joining domain 3D69F9BD7AF24C59BB600A8D7B1D4770
[ 2229.339359] (
[ 2229.339362] 0
[ 2229.339364] ) 1 nodes
[ 2229.360976] ocfs2: Mounting device (147,0) on (node 0, slot 1) with
ordered data mode.
[ 2229.366496] ocfs2: Begin replay journal (node 1, slot 0) on device
(147,0)
[ 2229.380189] ocfs2: End replay journal (node 1, slot 0) on device (147,0)
[ 2256.920272] o2dlm: Leaving domain 3D69F9BD7AF24C59BB600A8D7B1D4770
[ 2256.960029] ocfs2: Unmounting device (147,0) on (node 0)
[ 2333.541256] o2dlm: Joining domain 3D69F9BD7AF24C59BB600A8D7B1D4770
[ 2333.541263] (
[ 2333.541266] 0
[ 2333.541268] ) 1 nodes
[ 2333.667424] ocfs2: Mounting device (147,0) on (node 0, slot 0) with
ordered data mode.
root@drbd-server01:/home/marvin# o2cb start-heartbeat mdtxcluster
o2hb: Heartbeat started on region C402D542D0D648FAA7EA1D8D7B6571B8 (dm-1)
[ 2802.429790] o2hb: Region C402D542D0D648FAA7EA1D8D7B6571B8 (dm-1) is
now a quorum device
[ 2847.205047] o2dlm: Joining domain 3D69F9BD7AF24C59BB600A8D7B1D4770
[ 2847.205055] (
[ 2847.205058] 1
[ 2847.205061] ) 1 nodes
[ 2847.292767] ocfs2: Mounting device (147,0) on (node 1, slot 0) with
ordered data mode.
[ 2875.108121] o2dlm: Leaving domain 3D69F9BD7AF24C59BB600A8D7B1D4770
[ 2875.144193] ocfs2: Unmounting device (147,0) on (node 1)
[ 2963.823619] o2dlm: Joining domain 3D69F9BD7AF24C59BB600A8D7B1D4770
[ 2963.823626] (
[ 2963.823629] 1
[ 2963.823631] ) 1 nodes
[ 2963.870726] ocfs2: Mounting device (147,0) on (node 1, slot 1) with
ordered data mode.
[ 2963.879606] ocfs2: Begin replay journal (node 0, slot 0) on device
(147,0)
[ 2963.893880] ocfs2: End replay journal (node 0, slot 0) on device (147,0)
You can see that I have two one node clusters. But no shared storage no
one two node cluster.
o2cb -v -v -v -v start-heartbeat mdtxcluster
Using config file '/etc/ocfs2/cluster.conf'
Initializing cluster stack
Checking heartbeat mode
Global heartbeat enabled
Heartbeat region C402D542D0D648FAA7EA1D8D7B6571B8
Scanning devices
Region C402D542D0D648FAA7EA1D8D7B6571B8 matched to device
/dev/mapper/c-heratbeat
About to start heartbeat
Starting heartbeat on region C402D542D0D648FAA7EA1D8D7B6571B8, device
/dev/mapper/c-heratbeat
Stop heartbeat on devices removed from config
Checking heartbeat mode
Global heartbeat enabled
Looking up active heartbeat regions
Global heartbeat started
I set mode to local but after start set to global. I don´t know why.
Regards
Dan
Dne 22. 10. 23 v 23:48 Valentin Vidic napsal(a):
On Sun, Oct 22, 2023 at 11:38:56PM +0200, Daniel Smolik wrote:
But when use local heartbeat mode I can mount ocfs but not work in cluster
mode. I mean that without global heartbeat you didn't have shared storage.
If I understand correctly with local heartbeat there is one heartbeat
running per ocfs2 mount and this should still allow cluster storage
to work.
Global heartbeat only optimizes this to run one or more heartbeat
devices for all ocfs2 mounts, so it should not be a strong requirement
for running a shared cluster storage.
