DRBD is a Distributed Replicated Block Device. Developed by LinBit it is now part of the standard-linux-kernel. Regard it as RAID 1 across an IP-network using any type of block device. Normally only the "primary" side can write.

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DRBD experimentation and virtualization

This was one of those thoughts that were tickling the back of my mind. I'm working on a home testbed of a high-availability cluster consisting of just computers, not a SAN or NAS for storage, just ...
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Why won't DRBD restart?

We run 10 servers, mostly cheap requisitioned desktop machines, all running CentOS 5.1 and Xen. All these 10 servers do is run Xen virtual machines. Someone switched off the power supply to the server ...
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DRBD as a block device for XEN VM (Centos 5.3)

I have setup a drbd resource between 2 server nodes - everything works correctly when doing sync tests between the two. (I want to create a HA cluster using drbd,xen and heartbeat) However, when I ...
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CentOS 5.3 64bit, XEN and DRBD

After numerous Google searches and attempts to rectify this issue I decided to post here... hopefully someone here can assist me, please?? I have setup 2 dell poweredge r200 servers with Centos 5.3 ...
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DRBD on a disk with existing file system that takes all the place

I'm currently trying to simulate the environment via XEN. I have installed two debian systems with such FS layout: cltest1:/etc# df -h Filesystem Size Used Avail Use% Mounted on ...
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MySQL replication using DRBD, distributed lock manager?

I need to implement Linux-HA configuration in two servers. I've decided to use DRBD for block level replication on both hosts, mainly for MySQL data replication. As I understand, in DRBD ...
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DRBD Proxy / WAN experiences

I'd like to consider the use of DRBD for data replication between a primary and secondary location. The initial plan is to establish a VPN tunnel between the two; the primary end using a slice of a ...
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Data loss due to MySQL DRBD Heartbeat failover script

Using DRBD version: 8.2.6 (api:88/proto:86-88) Here is the contents of /etc/ha.d/haresources db1 192.168.100.200/24/eth0 drbddisk::mysql Filesystem::/dev/drbd0::/drbd::ext3::defaults mysql ...
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What is the better way to add extra servers for reliability in our case?

We have the following servers: A. 1 x web server running MySQL (a forum). B. 1 x web server running RT with Postgres. C. 1 x web server running a home grown app with MonetDB as the backend Now of ...
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DRBD / Heartbeat on Virtual Machines

Does anyone have experience configuring drbd with heartbeat between 2 virtual linux machines (VMWare Infrastructure)? The problem I am running into is that heartbeat likes multiple data paths to see ...