Multiple Backups on WP Multisites

[Christian-Roth]

My WP Multisite creates multiple backups since the following change:

a4fb0a2#diff-29b55d7c830b04ca5f3b553cfcd9f78a

And as far as I can see it: is_main_network() is always true for every site of my multisite. And so the backup cron is executed by every subpage.

This should work:
if ( ! is_main_site() || ( ! is_main_network() && ! is_main_site() ) ) { return; }

Or:

if ( ! is_main_network() ) { return; }

if ( ! is_main_site() ) { return; }

[pavelevap]

I have the same problem, I will try to apply this fix, thank you very much @Christian-Roth!

When I run backup manually, there is only one backup archive, but when triggered by cron, then there are each backup archive for each site (only one of them is working and without problems).

[mundschenk-at]

There's at least one support ticket for this issue (from February 2018) with a proposed solution similar to the one above.

[cuongdcdev]

As I know, the latest ( 3.6 ) version fixed this issue

[Christian-Roth]

The issue got fixed at the wrong place :)
As mentioned here: https://wordpress.org/support/topic/multi-site-wpcron-multiple-backups/page/2/#post-10435815
And here: https://wordpress.org/support/topic/multi-site-wpcron-multiple-backups/page/3/#post-10436561