Try 7.6.4.2 client (or higher).  I use that one with Linux clients (5.7 included) and have no issues (on the other hand, I don't have any backup running for so long).

We have dozens linux clients without problem, but this one have a few million files for backup, that's why it takes too long to backup. Can we upgrade clients to 7.6.4.x without upgrading server?

Yes, you can... however, if big number of files would be the issue, most likely I would go for different backup method (eg. SnapImage or storage snapshots).

I upgraded the client and still same issue, any advice?

Hi,

I have some question, You are using client side or  server side backups ?

What is the backup command for configured in this client resource ?

Is this client with multiple network interfaces or multiple hostnames ?

You mentioned that this machine hold million of files , did you used to backup the machine full backup recently ? meaning when was the last successfull full and incremental backups or this machine has never been backed up ?

Waiting your kind replies.

Ahmed Bahaa

This one is using server side backups (backup is initiated from server).

Configured backup comman is save -c client_name

İt has both multiple interfaces with bonding and multiple hostname.

Last successful full backup is two months old, we continued incremental for two months and now full is failing.