I'm using GlusterFS 3.7.9, currently on a single server with 4 bricks.
Each brick has 4TB and the volume is set up as distribute only.
The volume is mounted on a secondary server and I use it for backup purposes.
The problem is that once every couple of days the secondary server sees the volume smaller (12TB) and when it tried to access some of the files I get transport endpoint not connected
.
It's like it stops seeing one of the 4 bricks, while the server where the volume is sees them all without a problem.
I have the IPs in the firewall whitelist, gluster volume status
says everything is fine.
What should I check? I can't find any reason for this.