On Mon, Nov 26, 2018 at 8:21 AM Atin Mukherjee <[email protected]> wrote:
> > > On Sun, Nov 25, 2018 at 8:40 PM Jeevan Patnaik <[email protected]> > wrote: > >> Hi, >> >> I am getting output Another transaction is in progress with few gluster >> volume commands including stop command. And with gluster volume status >> command, it's just hung and fails with timeout error. >> > > This is primarily because of not allowing glusterd to complete it's > handshake with others when concurrent restart of glusterd services are done > (as I could understand from your previous email in the list). With GlusterD > (read as GD1) this is a current challenge w.r.t it's design where due to > its N X N handshaking mechanism at the restart sequence to bring all the > configuration data into inconsistent what we've seen is the overall > recovery time of the cluster can take very long if N is on the higher side > (in your case N = 72 which is certainly high) and hence the recommendation > is not to restart the glusterd services concurrently and wait for the > handshaking to complete. > Forgot to mention that GlusterD2 ( https://github.com/gluster/glusterd2) which is in development phase addresses this design problem. > >> So, I want to find out which transaction is hung and how to know this? I >> ran volume statedump command, but didn't wait till it's completed to check >> if it's hung or giving any resut, as it is also taking time. >> > > kill -SIGUSR1 $(pidof glusterd) should get you a glusterd statedump file > in /var/run/gluster which can point to a backtrace dump at the bottom to > understand which transaction is currently in progress. In case this > transaction is queued up for more than 180 seconds (which is not usual) the > unlock timer kicks out such locks. > > >> Please help me with this.. I'm struggling with these gluster timeout >> errors :( >> >> Besides, I have also tuned >> transport.listen-backlog gluster to 200 and following kernel parameters >> to avoid syn overflow rejects: >> net.core.somaxconn = 1024 >> net.ipv4.tcp_max_syn_backlog = 20480 >> >> Regards, >> Jeevan. >> >> >> _______________________________________________ >> Gluster-users mailing list >> [email protected] >> https://lists.gluster.org/mailman/listinfo/gluster-users > >
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