drbd-user March 2013 archive
Main Archive Page > Month Archives  > drbd-user archives
drbd-user: [DRBD-user] Primary fully unavailable with "time

[DRBD-user] Primary fully unavailable with "time expired" errors

From: AZ 9901 <az9901_at_nospam>
Date: Mon Mar 04 2013 - 21:36:15 GMT
To: drbd-user@lists.linbit.com


I faced a big issue with DRBD.

OS : Linux Debian 6
Kernel : 2.6.32-4
DRBD : 8.3.14

My primary server (srv2-2) was totally unreachable, it only replied to ping.
Apache, SSH etc... were not replying anymore.

So I connected to my secondary server (srv2-1) and closed communication between both.
This made srv2-2 available again !
I decided however to change srv2-1 from Secondary to Primary and to reboot srv2-2.

Following are logs from srv2-2 and srv2-1, with some comments.
srv2-2 : http://pastebin.com/raw.php?i=zkHV5Tr9
srv2-1 : http://pastebin.com/raw.php?i=WX4vNR6d

on srv2-2, sar tells me that some of my CPU cores were 100% used (100% iowait) during all the time frame in which I had "time expired" errors.

Could you help me please ?

Thank you very much,


drbd-user mailing list