Question

1

How to configure autozsys, so that it doesn't destroy zfs snapshots older than X time?

rated 0 times [ 1] [ 0] / answers: 1 / hits: 664 / 2 Years ago, thu, july 21, 2022, 2:47:10

I think that autozsys destroys snapshots older than a month and I'm wondering if it's possible to extend this (make it for example persist 3 months worth of snapshots).

I couldn't find any configuration file for autozsys, only a cron job in /etc/apt/apt.conf.d/90_zsys_system_autosnapshot, but I hoped for more sophisticated means to control it.

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answered 2 Years ago reangi · Accepted Answer

To keep absolutely all automatic snapshots from the last 3 months, ensure gcStartAfter is set to 90 in /etc/zsys.conf. At minimum, the file would look as follows:

history:

  gcstartafter: 90

Once the file is saved, effect the change via:

zsysctl service reload

Source: a blog post by the author of ZSys, which is linked to by the ZSys GitHub repository in lieu of proper documentation: https://didrocks.fr/2020/06/04/zfs-focus-on-ubuntu-20.04-lts-zsys-state-collection/