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Questions tagged [drbd]

Use for DRBD, a distributed replicated storage system for the Linux platform.

DRBD® refers to block devices designed as a building block to form high availability (HA) clusters. This is done by mirroring a whole block device via an assigned network. DRBD can be understood as network based raid-1.

See http://www.drbd.org/

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drbdadm not creating block device

We are in process of building active-passive cluster via DRBD installed in Centos-7.4 which running kernel-3.10.0-862.el7. While creating cluster with drbadm is unable to create a volume and giving below error. Can you please help me…
user5016380
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Is the DRBD configuration-file format a standard one?

Is the configuration-file format that DRBD uses a somewhat standard one with existing parsers in Python or is it not which would require me to write my own parser? Example: resource server42 { volume 0 { device …
Simon Fromme
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DRBD - Split Brain issue

Im using 2 node DRBD(v9.0) cluster with pacemaker. STONITH is disabled. I have restarted my Node 2(which is acting as a primary). Then after restart, I can't able to login and it shows the split brain occurred. How can I avoid this kind of…
TheDataGuy
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An explanation of DRBD Protocol C

What protocol does DRBD employ to guarantee that it can maintain 2 disks in sync with each other? Does it use 2-phase commits (or a variant similar to 2PC)? Does DRBD have an asynchronous/offline reconciler that is constantly checking to see if…
skittish
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DRBD/pacemaker both nodes are slaves

I have a error with the high availability soft Pacemaker, I use it with drbd. Then the configuration, I obtain the next message with the command crm_mon : Last updated: Fri Aug 26 10:57:32 2016 Last change: Fri Aug 26 17:33:11 2016 by root…
Geoffroy
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Can't mount DRBD device to directory

I installed drbd for replicate data on two host. After installing successed, I check status drbd: root@host3:~# cat /proc/drbd version: 8.3.13 (api:88/proto:86-96) GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by root@sighted, 2012-10-09…
sontp
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Pacemaker and DRBD on Hyper-V

I need to setup two-node Web cluster for Apache web site. I have Hyper-V infrastructure and only two nodes. The points are load-balancing and high availability. I installed and configured two VMs with CentOS 7, Pacemaker cluster, MariaDB 10. I…
Evgeniy
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Ideal configuration for two Proxmox 4.1 nodes cluster

The Situation: I have two identical Supermicro servers with a lot of RAM and storage capacity. The servers got an Adaptec RAID Controller, which was used to create a RAID 1 for the OS and a RAID 50 for "data". The raid sets are identical on both…
S. Bordo
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How to extract drbd status using grep/regex/cut/awk/sed etc

From my output from /proc/drbd I am trying to extract 'UpToDate/UpToDate' section of this output per device (0 and 1). I tried: cat /proc/drbd | grep ' 0:' | grep -Eo 'ds:(.*)' But that gives me: ds:UpToDate/UpToDate C r----- That is not what…
sgwrist
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pacemaker+corosync+DRBD 'unknown error' (1)

i have configured DRBD,corosync,pacemaker in mysystem..it works well when i have only one resource group. but i face the below problem when i added one more resource group. crm_mon -f // shows below error Migration summary: * Node cent64asf1: *…
satheesh
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drbl : virtual machine node fals to infinite boot loop

I run Debian linux. I want to make a virtual machine in virtualbox, wich boots from a server via drbl. The server will be my laptop. The virtual machine start booting, but fall into infifite boot-loop. It load one part of the OS from the server,…
Roger
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Replication mode Protocol C in LinBit DRBD

I found information about replication modes in the DRBD documentation. I was specifically interested in the C protocol. If you believe the documentation, then its essence lies in the fact that the recording procedure is considered completed when the…
Killa
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Initializing meta-data on drbd resource wipes existing data?

I upgraded centos 6.4 to 6.10 on 1 node and after that installed drbd package(listed below) stopped working drbd-km-2.6.32_358.11.1.el6.x86_64-8.4.3-2.el6.x86_64 drbd-km-2.6.32_358.6.2.el6.x86_64-8.4.3-2.el6.x86_64 drbd-utils-8.4.3-2.el6.x86_64 I…
saurabh
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is drbd included as part of linux kernel by default?

is drbd included as part of linux kernel by default ? and which version ? i see an announcement in LKML for including drbd , but cant say for sure whehter it is included in linux kernel and which version. Also any distributions that include DRBD ? I…
eric johnson
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DRBD parse error, a syncer option keyword expected

Built a drbd v9.2 kernel module on Linux 5.14.0-162.6.1 The module is loaded but I get an error. resource data { protocol C; device /dev/drbd0; disk /dev/sdb1; meta-disk internal; net { cram-hmac-alg sha1; shared-secret…
Ura
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