[DRBD-user] The Problem of File System Corruption w/DRBD

Robert Sander r.sander at heinlein-support.de
Thu Jun 3 17:09:32 CEST 2021


Am 03.06.21 um 14:50 schrieb Eric Robinson:

> Yes, thanks, I've said for many years that HA is not a replacement for disaster recovery. Still, it is better to avoid downtime than to recover from it, and one of the main ways to achieve that is through redundancy, preferably a shared-nothing approach. If I have a cool 5-node cluster and the whole thing goes down because the filesystem gets corrupted, I can restore from backup, but management is going to wonder why a 5-node cluster could not provide availability. So the question remains: how to eliminate the filesystem as the SPOF?

Then eliminate the shared filesystem and replicate data on application

- MySQL has Galera
- Dovecot has dsync

Robert Sander
Heinlein Consulting GmbH
Schwedter Str. 8/9b, 10119 Berlin


Tel: 030 / 405051-43
Fax: 030 / 405051-19

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HRB 93818 B / Amtsgericht Berlin-Charlottenburg,
Geschäftsführer: Peer Heinlein -- Sitz: Berlin

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