My witness node just quit, lots of "unlinkable block" exceptions:
th_a fork_database.cpp:79 _push_block
{"new_block":{"previous":"000063f6db1440c2b25130cd53dfb59ba393476c","timestamp":"2015-09-19T17:44:45","witness":"1.6.2","transaction_merkle_root":"0000000000000000000000000000000000000000","extensions":[],"witness_signature":"1f356d6f0f9cd1f5b0c3d42f52f6eb46df93af7518175018bc91a4dfe06a395b4541c65ddbc7ec81499868cb52508afd27c6d8348029fc910b7aa3537448464924","transactions":[]}}
th_a db_block.cpp:195 _push_block
2687000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
2687510ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c177ee3dada43f55223bb18fdd7d9b30e7","000063c7f469f342f415e7dc947e7ab3f50bd335","000063ca5952fd63f7d343ae9243e48e80863d54","000063cc082deb3db5bf5face1691e24ba7f8460"]
2688000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
2688773ms th_a application.cpp:388 handle_block ] Got block #25592 with time 2015-09-19T17:44:48 from network with latency of 780 ms from delegate-clayop
2688773ms th_a fork_database.cpp:57 push_block ] Pushing block to fork database that failed to link: 000063f80322c81f8b12de9b5993c1c955d54a8c, 25592
2688773ms th_a fork_database.cpp:58 push_block ] Head: 25548, 000063cc082deb3db5bf5face1691e24ba7f8460
2688773ms th_a application.cpp:415 handle_block ] Error when pushing block:
3080000 unlinkable_block_exception: unlinkable block
block does not link to known chain
{}
th_a fork_database.cpp:79 _push_block
{"new_block":{"previous":"000063f77cfaaecfdd6756b2f5833ec19cc3fc20","timestamp":"2015-09-19T17:44:48","witness":"1.6.1538","transaction_merkle_root":"0000000000000000000000000000000000000000","extensions":[],"witness_signature":"1f34c399fc3bc711109d9412adb172f0258f1dd6612eb9c3e24a72bd87d8aecea54915fb219f1de70572b3b1abd13b5a6dc84191806bd98083ba59f42de76354b1","transactions":[]}}
th_a db_block.cpp:195 _push_block
2689000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
2689111ms th_a application.cpp:388 handle_block ] Got block #25592 with time 2015-09-19T17:44:48 from network with latency of 1118 ms from delegate-clayop
2689111ms th_a fork_database.cpp:57 push_block ] Pushing block to fork database that failed to link: 000063f80322c81f8b12de9b5993c1c955d54a8c, 25592
2689111ms th_a fork_database.cpp:58 push_block ] Head: 25548, 000063cc082deb3db5bf5face1691e24ba7f8460
2689112ms th_a application.cpp:415 handle_block ] Error when pushing block:
3080000 unlinkable_block_exception: unlinkable block
block does not link to known chain
{}
th_a fork_database.cpp:79 _push_block
{"new_block":{"previous":"000063f77cfaaecfdd6756b2f5833ec19cc3fc20","timestamp":"2015-09-19T17:44:48","witness":"1.6.1538","transaction_merkle_root":"0000000000000000000000000000000000000000","extensions":[],"witness_signature":"1f34c399fc3bc711109d9412adb172f0258f1dd6612eb9c3e24a72bd87d8aecea54915fb219f1de70572b3b1abd13b5a6dc84191806bd98083ba59f42de76354b1","transactions":[]}}
th_a db_block.cpp:195 _push_block
2689490ms th_a application.cpp:388 handle_block ] Got block #25592 with time 2015-09-19T17:44:48 from network with latency of 1497 ms from delegate-clayop
2689491ms th_a fork_database.cpp:57 push_block ] Pushing block to fork database that failed to link: 000063f80322c81f8b12de9b5993c1c955d54a8c, 25592
2689491ms th_a fork_database.cpp:58 push_block ] Head: 25548, 000063cc082deb3db5bf5face1691e24ba7f8460
2689491ms th_a application.cpp:415 handle_block ] Error when pushing block:
3080000 unlinkable_block_exception: unlinkable block
block does not link to known chain
{}
th_a fork_database.cpp:79 _push_block
{"new_block":{"previous":"000063f77cfaaecfdd6756b2f5833ec19cc3fc20","timestamp":"2015-09-19T17:44:48","witness":"1.6.1538","transaction_merkle_root":"0000000000000000000000000000000000000000","extensions":[],"witness_signature":"1f34c399fc3bc711109d9412adb172f0258f1dd6612eb9c3e24a72bd87d8aecea54915fb219f1de70572b3b1abd13b5a6dc84191806bd98083ba59f42de76354b1","transactions":[]}}
th_a db_block.cpp:195 _push_block
2690000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
2690098ms th_a application.cpp:388 handle_block ] Got block #25592 with time 2015-09-19T17:44:48 from network with latency of 2104 ms from delegate-clayop
2690098ms th_a fork_database.cpp:57 push_block ] Pushing block to fork database that failed to link: 000063f80322c81f8b12de9b5993c1c955d54a8c, 25592
2690098ms th_a fork_database.cpp:58 push_block ] Head: 25548, 000063cc082deb3db5bf5face1691e24ba7f8460
2690098ms th_a application.cpp:415 handle_block ] Error when pushing block:
3080000 unlinkable_block_exception: unlinkable block
block does not link to known chain
{}
th_a fork_database.cpp:79 _push_block
{"new_block":{"previous":"000063f77cfaaecfdd6756b2f5833ec19cc3fc20","timestamp":"2015-09-19T17:44:48","witness":"1.6.1538","transaction_merkle_root":"0000000000000000000000000000000000000000","extensions":[],"witness_signature":"1f34c399fc3bc711109d9412adb172f0258f1dd6612eb9c3e24a72bd87d8aecea54915fb219f1de70572b3b1abd13b5a6dc84191806bd98083ba59f42de76354b1","transactions":[]}}
th_a db_block.cpp:195 _push_block
2690209ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c26bf08ebafa5593807c31ba77bcc06b81","000063c8f3216b57009235878d541207b150c29a","000063cb4385c7f6965a107a22006874c09afef9","000063cdd010890862beaa64123e32edbdd73f14"]
2690217ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c26bf08ebafa5593807c31ba77bcc06b81","000063c8f3216b57009235878d541207b150c29a","000063cb4385c7f6965a107a22006874c09afef9","000063cdd010890862beaa64123e32edbdd73f14"]
2690223ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c26bf08ebafa5593807c31ba77bcc06b81","000063c8f3216b57009235878d541207b150c29a","000063cb4385c7f6965a107a22006874c09afef9","000063cdd010890862beaa64123e32edbdd73f14"]
2690232ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c39be97087c9ce5c8b343e059e809ba8ab","000063c9260aa4abe461ecdf1573b3025fcad188","000063cc082deb3db5bf5face1691e24ba7f8460","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85"]
2690290ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c4c1508ce08b8cd7f183b4dcea85777bb9","000063ca5952fd63f7d343ae9243e48e80863d54","000063cdd010890862beaa64123e32edbdd73f14","000063cf50a023252b8084621ace2cafa3d70886"]
2690291ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c4c1508ce08b8cd7f183b4dcea85777bb9","000063ca5952fd63f7d343ae9243e48e80863d54","000063cdd010890862beaa64123e32edbdd73f14","000063cf50a023252b8084621ace2cafa3d70886"]
(57 repeating lines snipped)
2690471ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690471ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690474ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690474ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690474ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690478ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690478ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690478ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690479ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690479ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690479ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690480ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690480ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690480ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690481ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690481ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690481ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690482ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690482ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690482ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690483ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690483ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690483ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690484ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690484ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2690485ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063c5c82a119bcff707293aa756e7615e2840","000063cb4385c7f6965a107a22006874c09afef9","000063ce70a9e0e47eaaa80a44e9537fc4cdbc85","000063d037b5440a9c184de7169f50b4e2e395ac"]
2691000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
2691769ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063dfa50edb6fee62b24771504d3cb6efaa23"]
2691789ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063dfa50edb6fee62b24771504d3cb6efaa23"]
2691824ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063dfa50edb6fee62b24771504d3cb6efaa23"]
2691824ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063dfa50edb6fee62b24771504d3cb6efaa23"]
2691834ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063dfa50edb6fee62b24771504d3cb6efaa23"]
2691837ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063dfa50edb6fee62b24771504d3cb6efaa23"]
2691956ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063edc2e9e068f5f45ad848fe5f5c0fd82944","000063f37425282d452ecccbeda8ffdb82e1efbb","000063f6db1440c2b25130cd53dfb59ba393476c","000063f80322c81f8b12de9b5993c1c955d54a8c"]
2692000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
2692199ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063edc2e9e068f5f45ad848fe5f5c0fd82944","000063f37425282d452ecccbeda8ffdb82e1efbb","000063f6db1440c2b25130cd53dfb59ba393476c","000063f80322c81f8b12de9b5993c1c955d54a8c"]
2692315ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063edc2e9e068f5f45ad848fe5f5c0fd82944","000063f37425282d452ecccbeda8ffdb82e1efbb","000063f6db1440c2b25130cd53dfb59ba393476c","000063f80322c81f8b12de9b5993c1c955d54a8c"]
2692427ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063edc2e9e068f5f45ad848fe5f5c0fd82944","000063f37425282d452ecccbeda8ffdb82e1efbb","000063f6db1440c2b25130cd53dfb59ba393476c","000063f80322c81f8b12de9b5993c1c955d54a8c"]
2692762ms th_a application.cpp:388 handle_block ] Got block #25593 with time 2015-09-19T17:44:51 from network with latency of 1768 ms from init0
2692864ms th_a application.cpp:695 get_blockchain_synop ] synopsis: ["000063ee628e421e0ceb897f5f76ffb14122445e","000063f4e9ee967ffda64febd3ac53182cda02df","000063f77cfaaecfdd6756b2f5833ec19cc3fc20","000063f95be93182f33ef48c608556a4aa163303"]
witness_node: /root/graphene/libraries/net/node.cpp:2488: void graphene::net::detail::node_impl::on_blockchain_item_ids_inventory_message(graphene::net::peer_connection*, const graphene::net::blockchain_item_ids_inventory_message&): Assertion `originating_peer->last_block_number_delegate_has_seen == _delegate->get_block_number(originating_peer->last_block_delegate_has_seen)' failed.
The last line: witness_node: /root/graphene/libraries/net/node.cpp:2488: void graphene::net::detail::node_impl::on_blockchain_item_ids_inventory_message(graphene::net::peer_connection*, const graphene::net::blockchain_item_ids_inventory_message&): Assertion `originating_peer->last_block_number_delegate_has_seen == _delegate->get_block_number(originating_peer->last_block_delegate_has_seen)' failed.
edit: I restarted witness_node, and after some similar looking errors, it's running smoothly for now:
3006446ms th_a application.cpp:514 get_item ] Serving up block #15625
3006446ms th_a application.cpp:514 get_item ] Serving up block #15626
3006446ms th_a application.cpp:514 get_item ] Serving up block #15627
3006447ms th_a application.cpp:514 get_item ] Serving up block #15628
3006447ms th_a application.cpp:514 get_item ] Serving up block #15629
3009000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
3009139ms th_a application.cpp:388 handle_block ] Got block #25699 with time 2015-09-19T17:50:09 from network with latency of 138 ms from fox
3012000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
3012205ms th_a application.cpp:388 handle_block ] Got block #25700 with time 2015-09-19T17:50:12 from network with latency of 205 ms from init4
3015000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
3015329ms th_a application.cpp:388 handle_block ] Got block #25701 with time 2015-09-19T17:50:15 from network with latency of 329 ms from init1
3018000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
3018282ms th_a application.cpp:388 handle_block ] Got block #25702 with time 2015-09-19T17:50:18 from network with latency of 282 ms from delegate-clayop
3021000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
3021155ms th_a application.cpp:388 handle_block ] Got block #25703 with time 2015-09-19T17:50:21 from network with latency of 155 ms from init6
3024000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
3024380ms th_a application.cpp:388 handle_block ] Got block #25704 with time 2015-09-19T17:50:24 from network with latency of 380 ms from in.abit
3027000ms th_a witness.cpp:182 block_production_loo ] Not producing block because it isn't my turn
3027137ms th_a application.cpp:388 handle_block ] Got block #25705 with time 2015-09-19T17:50:27 from network with latency of 137 ms from init5