backup fails trying to backup .cache directory

[Bobo-amg]

Error Msg -

rsync: [sender] readdir("/root/.cache/node-gyp/16.20.0/include/node/openssl/archs/linux-ppc64le/asm_avx2"): Input/output error (5)

??? RBK0021E: Backupprogram for type rsync failed with RC 23

RPi 4
source drive is a ssd drive with usb converter
backup drive is a usb stick

I've checked the drive as best I can and it comes back as clean with no errors. Wondering if it has anything to do with the fact it was trying to backup the .cache dir.

Cheers

[framps]

Wondering if it has anything to do with the fact it was trying to backup the .cache dir.

Well, usually rsync complaints about files which change during backup and no io error. But I'm sure it's because the cache was updated during backup.

You either have to stop the service which updates the cache (looks like it's node) or you exclude the cache from the backup.

[Bobo-amg]

So I decided to exclude that directory and used the following command to initiate a backup ...
sudo raspiBackup -m detailed -u "--exclude=/root/.cache/*"

Got this error msg ...
??? RBK0090E: Option -u requires a parameter. If parameter starts with '-' start with '\-' instead

I don't understand what this means. It looks correct from your docs.

[framps]

I don't understand what this means. It looks correct from your docs.

You are right. I'll update the doc accordingly,

Just use -u "\--exclude=/root/.cache/*" on the commandline. When you verified it works I suggest to add this option in the configuration file. Then don't use \.

[Bobo-amg]

Thanks for the tip. I was (eventually) able to obtain a completed backup.

Eventually because it appears nodejs can be a bit temperamental when it comes to backups. I found that excluding the 'node_modules' dir was also needed to get a completed backup. This could be hardware related (slow usb subsystem on the rpi perhaps) versus thousands of small files.

Anyway, thanks again.