On 11/08/2011 01:33 PM, MORITA Kazutaka wrote: > At Mon, 7 Nov 2011 10:03:19 -0500, > Shawn Moore wrote: >> >> When I checked on the cluster this morning I see the following from >> cluster info. A sheep and corosync process was found on all nodes >> except blade162 which didn't have a sheep process but did have a >> corosync one. I'm not sure what has happened. We have not had a > > In blade162.log: > > Nov 05 00:06:30 sd_leave_handler(1222) Network Patition Bug: I should have exited. > > Probably, this is a corosync's bug and Yunkai is trying to solve it. > > http://lists.wpkg.org/pipermail/sheepdog/2011-November/001835.html > > >> network interruption that we are aware of as all nodes are on the same >> switch (along with countless other production systems). Logs from >> each node can be found >> http://www.stormpoint.com/files/sd_2011-11-07.zip. Total >> un-compressed size is ~ 254MB and this download size is around 21MB. >> When I left Friday, this is how our cluster looked: >> >> All nodes were running version 0.2.4_63_gd56e3b6 >> >> Idx - Host:Port Vnodes Zone >> --------------------------------------------- >> 0 - 192.168.217.152:7000 64 1 >> 1 - 192.168.217.153:7000 64 1 >> 2 - 192.168.217.154:7000 64 1 >> 3 - 192.168.217.155:7000 64 1 >> 4 - 192.168.217.156:7000 64 1 >> 5 - 192.168.217.157:7000 64 2 >> 6 - 192.168.217.159:7000 64 2 >> 7 - 192.168.217.160:7000 64 2 >> 8 - 192.168.217.161:7000 64 2 >> 9 - 192.168.217.162:7000 64 2 >> >> [root at blade152 sheep]# collie cluster info >> Cluster status: running >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-04 17:26:22 14 [192.168.217.152:7000] >> 2011-11-04 17:26:22 13 [192.168.217.152:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:22 12 [192.168.217.152:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:22 11 [192.168.217.152:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:22 10 [192.168.217.152:7000, >> 192.168.217.157:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.162:7000] >> 2011-11-04 17:26:21 9 [192.168.217.152:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:21 8 [192.168.217.152:7000, >> 192.168.217.155:7000, 192.168.217.156:7000, 192.168.217.157:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:21 7 [192.168.217.152:7000, >> 192.168.217.154:7000, 192.168.217.155:7000, 192.168.217.156:7000, >> 192.168.217.157:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.162:7000] >> >> >> [root at blade153 ~]# collie cluster info >> Cluster status: running >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-05 00:05:19 14 [192.168.217.153:7000] >> 2011-11-05 00:05:19 13 [192.168.217.153:7000, 192.168.217.162:7000] >> 2011-11-05 00:05:19 12 [192.168.217.153:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-05 00:05:19 11 [192.168.217.153:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-05 00:05:19 10 [192.168.217.153:7000, >> 192.168.217.157:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.162:7000] >> 2011-11-05 00:05:19 9 [192.168.217.153:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-05 00:05:18 8 [192.168.217.153:7000, >> 192.168.217.155:7000, 192.168.217.156:7000, 192.168.217.157:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-05 00:05:18 7 [192.168.217.153:7000, >> 192.168.217.154:7000, 192.168.217.155:7000, 192.168.217.156:7000, >> 192.168.217.157:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.162:7000] >> >> >> [root at blade154 ~]# collie cluster info >> Cluster status: running >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-04 13:25:06 6 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 06:58:12 5 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 05:57:43 4 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-02 10:49:34 3 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> 2011-11-02 10:33:44 2 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-02 07:01:26 1 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> >> >> [root at blade155 ~]# collie cluster info >> Cluster status: running >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-04 13:24:42 6 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 06:57:48 5 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 05:57:19 4 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-02 10:49:07 3 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> 2011-11-02 10:33:17 2 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-02 07:00:59 1 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> >> >> [root at blade156 ~]# collie cluster info >> Cluster status: running >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-05 07:39:11 9 [192.168.217.154:7000, >> 192.168.217.155:7000, 192.168.217.156:7000, 192.168.217.157:7000, >> 192.168.217.159:7000, 192.168.217.160:7000] >> 2011-11-05 07:39:11 8 [192.168.217.154:7000, >> 192.168.217.155:7000, 192.168.217.156:7000, 192.168.217.157:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 18:47:30 7 [192.168.217.153:7000, >> 192.168.217.154:7000, 192.168.217.155:7000, 192.168.217.156:7000, >> 192.168.217.157:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.162:7000] >> 2011-11-04 17:26:26 6 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 10:59:30 5 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 09:59:03 4 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 09:59:03 3 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> 2011-11-02 10:33:44 2 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> >> >> [root at blade157 ~]# collie cluster info >> Cluster status: running >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-05 07:39:11 9 [192.168.217.154:7000, >> 192.168.217.155:7000, 192.168.217.156:7000, 192.168.217.157:7000, >> 192.168.217.159:7000, 192.168.217.160:7000] >> 2011-11-05 07:39:11 8 [192.168.217.154:7000, >> 192.168.217.155:7000, 192.168.217.156:7000, 192.168.217.157:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 18:47:30 7 [192.168.217.153:7000, >> 192.168.217.154:7000, 192.168.217.155:7000, 192.168.217.156:7000, >> 192.168.217.157:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.162:7000] >> 2011-11-04 17:26:26 6 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 10:59:32 5 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 10:59:32 4 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-02 10:49:34 3 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> 2011-11-02 10:33:44 2 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> >> >> [root at blade159 ~]# collie cluster info >> Cluster status: running >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-04 17:26:11 6 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 10:59:17 5 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 09:58:48 4 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-02 14:50:37 3 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> 2011-11-02 14:34:46 2 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-02 11:02:28 1 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> >> >> [root at blade160 ~]# collie cluster info >> Cluster status: running >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-04 17:26:26 6 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-04 10:59:30 5 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 09:59:02 4 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-02 14:50:46 3 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> 2011-11-02 14:34:55 2 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.162:7000] >> 2011-11-02 11:02:37 1 [192.168.217.152:7000, >> 192.168.217.153:7000, 192.168.217.154:7000, 192.168.217.155:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> >> >> [root at blade161 ~]# collie cluster info >> Cluster status: The sheepdog is stopped doing IO, short of living nodes >> >> Cluster created at Wed Nov 2 11:02:26 2011 >> >> Epoch Time Version >> 2011-11-04 17:26:51 14 [192.168.217.161:7000] >> 2011-11-04 17:26:51 13 [192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:51 12 [192.168.217.160:7000, >> 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:51 11 [192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:48 10 [192.168.217.157:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> 2011-11-04 17:26:48 9 [192.168.217.156:7000, >> 192.168.217.157:7000, 192.168.217.159:7000, 192.168.217.160:7000, >> 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:48 8 [192.168.217.155:7000, >> 192.168.217.156:7000, 192.168.217.157:7000, 192.168.217.159:7000, >> 192.168.217.160:7000, 192.168.217.161:7000, 192.168.217.162:7000] >> 2011-11-04 17:26:48 7 [192.168.217.154:7000, >> 192.168.217.155:7000, 192.168.217.156:7000, 192.168.217.157:7000, >> 192.168.217.159:7000, 192.168.217.160:7000, 192.168.217.161:7000, >> 192.168.217.162:7000] >> >> >> [root at blade162 ~]# collie cluster info >> failed to connect to localhost:7000, Connection refused >> failed to connect to localhost:7000, Connection refused > > It seems that a network partition is wrongly detected. > > To make explanation simpler, I'll use the following labels for each > node: > > n0: 192.168.217.152 > n1: 192.168.217.153 > n2: 192.168.217.154 > n3: 192.168.217.155 > n4: 192.168.217.156 > n5: 192.168.217.157 > n6: 192.168.217.159 > n7: 192.168.217.160 > n8: 192.168.217.161 > n9: 192.168.217.162 > > I guess your cluster is splited into 5 groups; > {n0}, {n1}, {n2, n3, n4, n5, n6, n7}, {n8}, {n9}. > > - n0 received a notification that n[1-9] were left. > - n1 received a notification that n0 and n[2-9] were left. > - n[2-7] received a notification that n0, n1, n8, and n9 were left. > - n8 received a notification that n[0-7] and n9 were left. > - n9 received a notification that n[0-8] were left (and aborted due to the above bug). n9 bugged out, so it received a message that identified itself on leave list.so n9 received a notification that n[0-9]. > > Currently, Sheepdog cannot handle this kinds of false detection. This false detection is passed on to sheep from corosync. I guess this is triggered from corosync's built-in timeout mechanism. The corosync's heartbeat message might be discarded or jammed for whatever reason. I am suspecting networking is hijacked fully by heavy IO, and no channel for corosync's heart-beat messages. > We may avoid this problem if we set appropriate values to > corosync.conf (totem.merge or totem.seqno_unchanged_const?), but I'm > not sure. Does anyone know more about this? > I think sheep can work around this problem by use of halt feature. The single node ring {n0}, {n1}, {n8}, {n9} then will halt and the other will function as expected. So from the log, only blade161{n8} get into halt status. other single nodes are still running, weird. Shawn, did you format with -H or --nohalt option? If not, might be some bug in halt path. Thanks, Yuan |