sometimes errors struct.error: 'H' format requires 0 <= number <= 65535

[kawww]

3/4 nodes sometimes show these errors, I have to reinstall ectrumx and sync again.

Oct 15 03:55:12 localhost electrumx_server[593]: File "/root/electrumx/electrumx/server/block_processor.py", line 341, in flush
Oct 15 03:55:12 localhost electrumx_server[593]: self.db.flush_dbs(self.flush_data(), flush_utxos,
Oct 15 03:55:12 localhost electrumx_server[593]: File "/root/electrumx/electrumx/server/db.py", line 229, in flush_dbs
Oct 15 03:55:12 localhost electrumx_server[593]: self.flush_history()
Oct 15 03:55:12 localhost electrumx_server[593]: File "/root/electrumx/electrumx/server/db.py", line 298, in flush_history
Oct 15 03:55:12 localhost electrumx_server[593]: self.history.flush()
Oct 15 03:55:12 localhost electrumx_server[593]: File "/root/electrumx/electrumx/server/history.py", line 133, in flush
Oct 15 03:55:12 localhost electrumx_server[593]: flush_id = pack_be_uint16(self.flush_count)
Oct 15 03:55:12 localhost electrumx_server[593]: struct.error: 'H' format requires 0 <= number <= 65535
Oct 15 03:55:14 localhost systemd[1]: electrumx.kevacoin.service: Succeeded.

[kawww]

Jan 16 22:45:30 localhost electrumx_server[592]: File "/usr/local/lib/python3.8/dist-packages/aiorpcx/curio.py", line 242, in aexit
Jan 16 22:45:30 localhost electrumx_server[592]: await self.join()
Jan 16 22:45:30 localhost electrumx_server[592]: File "/usr/local/lib/python3.8/dist-packages/aiorpcx/curio.py", line 211, in join
Jan 16 22:45:30 localhost electrumx_server[592]: raise task.exception()
Jan 16 22:45:30 localhost electrumx_server[592]: File "/root/electrumx/electrumx/server/mempool.py", line 241, in _refresh_hashes
Jan 16 22:45:30 localhost electrumx_server[592]: await self._process_mempool(hashes, touched, height)
Jan 16 22:45:30 localhost electrumx_server[592]: File "/root/electrumx/electrumx/server/mempool.py", line 282, in _process_mempool
Jan 16 22:45:30 localhost electrumx_server[592]: nameXs[tx.namekeyout].remove(tx_hash)
Jan 16 22:45:30 localhost electrumx_server[592]: KeyError: b'E\xb4\xadmD\xa3\x00(A*\xfe\x88\x19f3\xc1\x81\xb4r\x10\xc2\x02\x1e\xd0b\xc2\xba\x13\xc5\x05\xa6q'

stopped again

[kawww]

all the electrumx server stopped at the same time.

● electrumx.kevacoin.service - Kevacoin
Loaded: loaded (/etc/systemd/system/electrumx.kevacoin.service; enabled; vendor preset: enabled)
Active: inactive (dead) since Sat 2022-03-19 05:02:36 UTC; 23h ago
Process: 600 ExecStart=/root/electrumx/electrumx_server (code=exited, status=0/SUCCESS)
Main PID: 600 (code=exited, status=0/SUCCESS)

Mar 19 05:02:34 localhost electrumx_server[600]: File "/usr/local/lib/python3.8/dist-packages/aiorpcx/curio.py", line 242, in aexit
Mar 19 05:02:34 localhost electrumx_server[600]: await self.join()
Mar 19 05:02:34 localhost electrumx_server[600]: File "/usr/local/lib/python3.8/dist-packages/aiorpcx/curio.py", line 211, in join
Mar 19 05:02:34 localhost electrumx_server[600]: raise task.exception()
Mar 19 05:02:34 localhost electrumx_server[600]: File "/root/electrumx/electrumx/server/mempool.py", line 241, in _refresh_hashes
Mar 19 05:02:34 localhost electrumx_server[600]: await self._process_mempool(hashes, touched, height)
Mar 19 05:02:34 localhost electrumx_server[600]: File "/root/electrumx/electrumx/server/mempool.py", line 282, in _process_mempool
Mar 19 05:02:34 localhost electrumx_server[600]: nameXs[tx.namekeyout].remove(tx_hash)
Mar 19 05:02:34 localhost electrumx_server[600]: KeyError: b'\x86|\xef\xce\x8a\xc3\x9e\x86\x9f\x8c\xcee.\xa1\xc6\x7f7\x04\xee\x99vp"B\xaf\xfa\xe8bj\x05\x8c\x94'
Mar 19 05:02:36 localhost systemd[1]: electrumx.kevacoin.service: Succeeded.

good after reboot

[kawww]

This is electrumx problem kyuupichan#185 (comment)

So I think it is better to delete db every month.

#create fixe.sh

vi fixe.sh

#!/bin/bash echo "Fix electrumx 65535!"

systemctl stop electrumx.kevacoin.service

rm -rf /root/kevax

mkdir /root/kevax

systemctl start electrumx.kevacoin.service

#run

chmod -R 777 fixe.sh

#clear db every month/2month

crontab -e

1 1 1 * * bash /root/fixe.sh

1 1 15 * * bash /root/fixe.sh

1 1 1 */2 * bash /root/fixe.sh

1 1 1 1-11/2 * bash /root/fixe.sh