Archivve（zip / tar）停止在1GB存档大小（Server Skript）

i would like to backup my website data. I think something could be wrong with the configuration or my user...

I wrote a php file which should be activated by a cronjob weekly:

shell_exec('tar -czvf <File PATH TO SAVE TAR>' . date("Y-m-d_H-i-s") . 'nextCloud.tar.gz <DIRECTORY TO ARCHIVE> --exclude="<A SPECIAL FOLDER>"', $output);

So nothing special... PHP skript is working, no problem. But the tar archive stops at around 1GB without an error. Same, if i use a zip -r command. I tried to split up the tar archive into 900MB Blocks, not possible.

Ideas where this problem could exist? I think its a configuration issue

Ahh, yeah. If i login into SSH and run the tar command, the new archive is on full size.

Thanks for your answers.

Hopefully you don't say following:

"Hey, you are using a shared hosting plattform. You can't do the requiered configurations to fix your issue, upgrade to a V- or Root Server."

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