DRBD: Difference between revisions

From DWIKI
Line 56: Line 56:


=FAQ=
=FAQ=
==show resource sizes==
lsblk


==commands to show info==
==commands to show info==

Revision as of 15:33, 18 July 2018

Distributed Replicated Block Device


Links

See also: http://www.gluster.org/ and http://ceph.com/

Support

Tools

drbdadm

drbd-overview

drbdsetup

Docs

Recovery

GFS on DRBD


Cheatsheet

Make device primary

drbdadm primary yourdeviceID

or

drbdsetup /dev/drbdX primary -o

FAQ

show resource sizes

lsblk

commands to show info

drbdmon
drbdtop


resolving split brain issues

diskless

You might try

drbdadm attach drbd0


sync is slow

show configuration

drbdsetup show


show more info

drbdsetup show-gi <minor-number>

update network settings

drbdsetup net-options 10.0.0.1 10.0.0.2  --sndbuf-size=2M


mount: unknown filesystem type 'drbd'

Usually means your node is not primary. If you're sure you know what you're doing you can use

mount -t ext4 /dev/drbd1 /drbdmount

reload configuration

drbdadm adjust all


show configuration of resource

drbdsetup /dev/drbd0 show


resource unknown

First try

drbdadm up resourcename

Command 'drbdmeta 1 v08 /dev/drbd0 internal apply-al' terminated with exit code 20

Most likely split brain issue, check dmesg etc