Restore seems to hang at "check free space"

I am trying to restore from a full backup (database plus data). /var/log/ncp.log says

[ nc-limits ] (Thu 22 Jul 16:38:26 UTC 2021)
Using 6 PHP threads
Using 192434176 memory for the database

[ nc-restore ] (Thu 22 Jul 16:40:36 UTC 2021)
check free space...

However, there has been no further progress for nearly an hour now. How long should this take? Via htop I can see that there is a tar running with a pigz child process which seem to be doing IO. Is there any other information I can look at to see what is happening?

Not enough info …
Restoring to what, new hardware, new VPS?
What installation procedure did you use ? What Version?

output of

df -hT


uname -a

You can monitor the log with

sudo cat -f /var/log/ncp.log

RPI’s really perform poorly in general, if that’s what you are using.

Thanks for the info. I had looked a the contents of /var/log/ncp.log but there was no change. Now however it now says

Apigz: skipping: <stdin>: corrupted -- incomplete deflate data
pigz: abort: internal threads error
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
extracting backup file /media/SamsungT5/nextcloud-bkp_20210629_1624935604.tar.gz...

I suspect there is something wrong with the backup file. I wondered at It being only just over half the size of the one from the previous month. I’ll try and restore from that.