Server Freeze

Server freeze – 2014.12.14

The knew server is ‘frozen’ again. This has been happening daily at about O301 UTC each night. See my Twitter feed for background. In this post I will include details as I progress through the data. The server in question is knew (yes, that’s the hostname). dtrace hotkernel I left this running in an ssh session and pressed control-C this morning: [root@knew:/usr/share/dtrace/toolkit] # ./hotkernel >> /var/tmp/hotkernel ^C ssh login loop It was suggested […]

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system freezes up with lots of sonewconn Listen queue overflow

I recently added 10 new HDD to a system which already had 10 HDD (now a total of 20). The HDD are split into two zpools: $ zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT system 27T 22.1T 4.93T – 19% 81% 1.00x ONLINE – tank_data 45.2T 26.3T 19.0T – 37% 58% 1.00x ONLINE – zoomzoom 436G 9.67G 426G – 6% 2% 1.00x ONLINE – The zoomzoom zpool is

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