Hi,
I have done some more investigation but I am still having a lot of
problems with CentOS 7, DRBD 9 and Xen. Is there anyone using the same
combination without issues?
I did find a similar issue and suggestions in
http://lists.linbit.com/pipermail/drbd-user/2015-April/021938.html, and
tried disabling NIC offloading by using this:
ethtool -K eno1 tso off gso off
But as soon as I do a reboot or a network restart on one of the nodes,
everything is broken again with the CPU stuck errors, and I have to
reboot all servers.
Anyone having any suggestions on what to try next?
Kind regards,
Maarten Bremer
We have problems with our three node DRBD 9 setup with CentOS 7 and Xen
4. When one of our nodes is rebooted, or becomes unavailable, the other
nodes freeze entirely without any information, or give the following
message:
kernel:NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s!
[drbd_w_db:1469]
They then require a reboot, sometimes crashing one of the other nodes
again in the process. Not a fun thing in a HA setup...
Does anyone have an idea what is going on, and what we can do to prevent
this from happening?
We are running:
DRBD 9.0.4-1 (api:2/proto:86-112)
CentOS 3.18.41-20.el7.x86_64
Xen 4.6.3-3.el7
I do not know if it is related, but we are using bonding (mode 1,
active-backup) with two network adapters.
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