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Questions tagged [drbd]

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.

283 questions
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DRBD stacked resources: recovering from failure

We're running a stacked four-node DRBD setup like this: A --> B | | v v C D This means three DRBD resources running across these four servers. Servers A and B are Xen hosts running VMs, while servers C and D are for backups. A…
Marcus Downing
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What are the options for synchronizing files between Linux servers in real time without an intermediary or remote share?

Quickfix (an open source FIX Engine) persists state information and sent/received messages in the filesystem of the server (Linux in this case). For disaster recovery, I should like these files to be kept up to date in near-realtime on a standby…
Rym
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OCFS2 + DRBD8 + MD mirror + PERC 6/iR + SATA 500GB = serious I/O problems?

I have reports that I/O on a certain filesystem, namely /srv/data1, is intermittently horrific. I've seen it myself and it's true. For example, I run 'ls' /srv/data1 and the output takes 30+ seconds to appear. I run it again and this time, no…
Mike Diehn
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DRBD setup problem

I'm so new to DRBD, please help me fixing the problem below. Enclosed my drbd.conf. Many thanks [root@skonkwerks1 ~]# drbdadm create-md all open(/dev/hdb3) failed: No such file or directory Command 'drbdmeta /dev/drbd0 v08 /dev/hdb3 internal…
cuthieu
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NFS-shared file-system is locking up

Our NFS-shared file-system is locking up. Please feel free to ask any questions you feel relevant. :) At the time, there are a lot of processes in "disk sleep" state, and the load averages on our machines sky-rocket. The machines are responsive on…
fredden
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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 its peer node. For instance, it likes to have a…
Brent
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drbd block device as storage for kvm virtual machine

I've setup a drbd replication between two machines and used a drbd block device as storage for a kvm machine. Everything is running well. However I'm in doubt if this setup is ok to use. From what I've read so far on the internet, people tend to use…
facha
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Unexpected start of already-primary server processes when heartbeat on secondary is stopped

I've got an active-passive Heartbeat cluster with Apache, MySQL, ActiveMQ and DRBD. Today, I wanted to perform hardware-maintenance on the secondary node (node04), so I stopped the heartbeat service before shutting it down. Then, the primary node…
Ger Apeldoorn
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DRBD config to automatically resolve any split brain

I'm running 2 node cluster with DRBD (active/passive) managed by the drbd systemd service and a small script that mounts volumes whenever a resource becomes primary. I want to configure the DRBD in such a way that it will always resolve any split…
eagr
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drbd: quorum and dual primary for ocfs2 without fencing?

Due to cephs poor performance on NVME i'm experimenting with OCFS2 on DBRD again. DBRD appears to initially have been built around the idea notifying an application of a hardware failure, and the application taking appropriate steps to move access…
aep
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DRBD Same server specs

Is it possible to DRDB a entire server? We have ~5 or so webservers that have identical specs but for each one I had to log in and install all the software, etc.. With DRDB I was thinking if I update one (say recompile apache), all of them would be…
Markii
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NFS Server - Corosync, DRBD & Pacemaker

I have 2 HA NFS server (Ubuntu with CoroSync, Pacemaker & DRBD). Everything is working beautifully with one small issue. If I kill an NFS it fails over seamlessly (NICE!) As the killed node is coming back up it causes a 5-10 second disconnection of…
Matt Neubauer
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How to create shared folder with Linux Samba Cluster that is accessible by Windows? (Two PCs in cluster with one IP)

does anyone know how to create a shared folder in any distribution of Linux that could be accessible by Windows and would be HA (high available)? Background: I have Windows Server cluster and it needs a witness. Two types are available – shared…
TBS
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DRBD does not sync files even though it is UpToDate

I recently set up a DRBD replication on two nodes, did the setup, mounted the drbd disk with "create-md", "up", "connect", etc. I, apparently, was successful when it shows the status "UpToDate", however when I create any file in /var/www, it does…
Froslass
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DRBD with external meta disk

I am attempting to create a failover with DRBD and I have two partitions. Partition 1) /dev/sda4 is setup for the KVMs I will be creating. Partition 2) /dev/sda5 is for the DRBD metadata My config file is below resource r0 { protocol C; …
user3098629
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