I have an Ubuntu 20.04.2 machine that I configured to boot from raidz2. During the original setup, I chose not to use swap. At the time, I didn’t have a spare drive and I had heard that there could be issues using a swap file on a raidz partition. After finishing the install, I added a 2TB nvme drive and configured it as a swap partition.
When my system runs for a long while, the memory usage eventually hits 100% and Ubuntu hangs. Running glances just prior to this occurring shows the high memory usage but shows 0 of the swap being used.
I run the same processes on other machines and when they make use of the swap file and continue running without issue.
Any suggestions?
from free -h command:
total used free shared buff/cache available
Mem: 125Gi 122Gi 1.0Gi 1.3Gi 2.6Gi 1.2Gi
Swap: 127Gi 5.0Mi 127Gi
swapon -s
Filename Type Size Used Priority
/mnt/swapdrive/swapfile file 134217724 7424 -2
