On Mon, Nov 13, 2017 at 10:10 PM, Emmanuel Dreyfus <manu@xxxxxxxxxx> wrote:
Hello
I am looking for hints about how to debug this:
I have a 4x2 Distributed-Replicate volume which exhibits extremely slow
operations. Example:
# time stat /gfs/dl
51969 10143657874486987692 drwxr-xr-x 4 _httpd wheel 172912968 4096 "Nov 13 17:22:12 2017" "Sep 22 11:53:35 2017" "Sep 22 11:53:35 2017" "Jan 1 01:00:00 1970" 131072 8 0 /gfs/dl
8.72s real 0.00s user 0.01s system
But the thing is not 100% reproductible. Sometime I get an isntant
(normal) response.
gluster volume status also exhibits trouble: each server will only
list its bricks, but not the other's one. I suspect it could just
be some tiemout because of slow answer from the peer.
Have you checked the output of gluster peer status? Also does glusterd log file give any hint on time outs, rpc failures, disconnections et all?
tcpdump tells me that the server can take seconds to answer.
Brick logs show nothing special.
Any idea?
--
Emmanuel Dreyfus
manu@xxxxxxxxxx
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