Questions tagged [drbd]

DRBD refers to block devices designed as a building block to form high availability (HA) clusters.

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What is the best way to explain this LVM output?

I bumped into the issue two days ago about RAID issue on my TS-251+ QNAP. I do not really bother the box until the problem comes. I explored details to find out what type of RAID, how RAID/LVM ...
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1answer
5k views

DRBD Failure: (127) Device minor not allocated

I use wmware workstation to run two virtual machines with OpenVZ 2.6.32-042stab108.2 installed on top on CentOS 6.6. I have created another primary partition, /dev/sda4, to configure it as drbd ...
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88 views

Failover using pcs causes DRBD disk get unavailable on source server “No such resource”

I am working on DRBD, PCS to run a 2 node cluster. With the config virtual_IP and DRBD disk works fine on first node. Then I test the failover with "pcs cluster stop" on master, the disk and virtual ...
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513 views

Float MAC address in Heartbeat format

It's been about a month where I've been working with "High Availability" on Elastix based on DRBD and Heartbeat. As you maybe be familiar with it, there is a file in Heartbeat called haresources that'...
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1answer
22 views

Pacemaker + Corosync + DRBD + Samba + NFS

Hello everybody, i am trying to setup a 2 PC cluster with shared resources ClusterIP, ClusterSamba, ClusterNFS, DRBD (cloned resource) and a DRBDFS.The beginning of the project was made following the ...
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96 views

pacemaker cluster does not move drbd-fs resource

I have a simple pacemaker cluster on Centos7, with only 1 resource: 2 nodes configured 3 resources configured Online: [ c1 c2 ] Full list of resources: Master/Slave Set: res_drbd-clone [res_drbd] ...
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36 views

variants for a Linux fileserver cluster

I currently have two hosts and each with 6 disks. Each host has a Debian 9 installed and 2 disks are in a Software Raid 1 array. The other 4 disks are free and should be used for data storage. Now I ...
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44 views

Setting up Pacemaker (pcs) with DRBD

I am working on a high-availability NFS passive-active cluster with two nodes. I am on RHEL 7.6. Both nodes have DRBD setup on them with two partitions, /prod (/dev/drbd0) and /base (/dev/drbd1). The ...
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585 views

Pacemaker cluster service can't start properly Couldn't mount filesystem

I have 3 nodes MySQL cluster on RHEL 7.5 with DRBD, Pacemaker and after start cluster getting following error. How can I overcome ? [root@db1 ~]# pcs status Cluster name: mysql_cluster Stack: ...
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warning /dev/centos/root swap centos-root does not exist — after configuring DRBD

I configured DRBD on default CentOS 7.3 Installation like following: /dev/centos/home was taking all the space in sda2 so reduced it and created /dev/centos/home (20% space) and /dev/centos/drbd (...