Re: Post-XDR CLD cannot keep session up

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On 02/07/2010 02:00 AM, Pete Zaitcev wrote:
Hi, Jeff&  Colin:

It looks like you broke something in CLD, not sure if server or client.
There are two possibly related bugs. But first, here's the messages
(The chunkd is run with -D). Note that I have 2 servers listed in DNS
(both on port 4499), but only one is up.

Feb  6 23:36:10 hitlain cld[1934]: databases up
Feb  6 23:36:10 hitlain cld[1934]: Listening on :: port 4499
Feb  6 23:36:10 hitlain cld[1934]: initialized: verbose 0
Feb  6 23:37:10 hitlain chunkd[1967]: Verbose debug output enabled
Feb  6 23:37:10 hitlain chunkd[1968]: cldc_saveaddr: found CLD host hitlain.zaitcev.lan prio 10 weight 50
Feb  6 23:37:10 hitlain chunkd[1968]: cldc_saveaddr: found CLD host elanor.zaitcev.lan prio 10 weight 50
Feb  6 23:37:10 hitlain chunkd[1968]: Selected CLD host hitlain.zaitcev.lan port 4499
Feb  6 23:37:10 hitlain chunkd[1968]: Listening on host :: port 8082
Feb  6 23:37:10 hitlain chunkd[1968]: initialized
Feb  6 23:37:10 hitlain chunkd[1968]: New CLD session created, sid 05B521BF4071EBA2
Feb  6 23:37:10 hitlain chunkd[1968]: CLD file "/chunk-default/2" created
Feb  6 23:37:10 hitlain chunkd[1968]: CLD file "/chunk-default/2" written
Feb  6 23:39:45 hitlain chunkd[1968]: Session failed, sid 05B521BF4071EBA2
Feb  6 23:39:45 hitlain chunkd[1968]: Selected CLD host elanor.zaitcev.lan port 4499
Feb  6 23:39:45 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:39:50 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:39:55 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:00 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:05 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:10 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:15 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:21 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:26 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:31 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:36 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:41 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:46 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:51 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:40:56 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:01 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:06 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:11 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:16 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:21 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:26 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:31 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:36 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:41 hitlain chunkd[1968]: cldc_udp_receive_pkt failed: -111
Feb  6 23:41:46 hitlain chunkd[1968]: New CLD session creation failed: 17
Feb  6 23:41:46 hitlain chunkd[1968]: Session failed, sid 6C5A5E5D4D8F2270
Feb  6 23:41:46 hitlain chunkd[1968]: Selected CLD host hitlain.zaitcev.lan port 4499
Feb  6 23:41:46 hitlain chunkd[1968]: New CLD session created, sid 4E2A8ED73878F038
Feb  6 23:41:46 hitlain chunkd[1968]: CLD file "/chunk-default/2" created
Feb  6 23:41:46 hitlain chunkd[1968]: CLD lock(/chunk-default/2) failed: 11

So, first regression: session ALWAYS fails, for no reason I can see.
It takes 2 minutes 35 seconds, as you can observe from the "Session failed"
message.


Well, session_timeout() is not being executed like it should be, by the core timer code. This could be memory corruption, a libtimer bug, or something else entirely. I can observe session_timeout() being updated to a new timer expiration, and then never being called again.

Off to run valgrind...

	Jeff



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