Re: Gerrit HA back and restore mechanism

[Luca Milanesio]

Hi Gagantej,

On 22 Sep 2025, at 13:28, Gagantej Rao <gagan...@gmail.com> wrote:

Dear Community,

We are running Gerrit in an HA cluster with multiple (3) nodes and have problems to create and restore a workable backup. Backups are not consistent and need a short stop of Gerrit to be created.

Have you checked the Gerrit documentation about best-practices for backups? [1].

Can you kindly support here how to make backups without stopping Gerrit application?

The short answer is: you can’t.

Have you thought about moving to multi-site?

You can have a “backup site” that is regularly stopped, backed up consistency and restarted.

The setup is:

- Gerrit on several nodes with High-Availability plugin configured

How much is “several”? 2? 3? 50? 100?

- Git repositories are stored on a shared block device (LVM logical volume + GFS2 filesystem)

That’s the main issue: you can’t have a “consistent snapshot” if the data is moving.

- The shared volume is mounted by the cluster resource manager (Pacemaker/Corosync + DLM + GFS2)

Thanks a lot

HTH

Luca.

[1] https://gerrit-documentation.storage.googleapis.com/Documentation/3.12.2/backup.html

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