could not gain write access to the shared memory file

[sailei1]

how to config?
how to fix?

[sailei1]

Last login: Thu Apr 5 23:51:10 on ttys001
/Users/zhangsailei/github/eos/build/programs/nodeos/nodeos ; exit;
sai:~ zhangsailei$ /Users/zhangsailei/github/eos/build/programs/nodeos/nodeos ; exit;
3215481ms thread-0 chain_plugin.cpp:96 plugin_initialize ] initializing chain plugin
3215481ms thread-0 wallet_plugin.cpp:39 plugin_initialize ] initializing wallet plugin
3215481ms thread-0 http_plugin.cpp:141 plugin_initialize ] host: 127.0.0.1 port: 8888
3215482ms thread-0 http_plugin.cpp:144 plugin_initialize ] configured http to listen on 127.0.0.1:8888
3215482ms thread-0 net_plugin.cpp:2622 plugin_initialize ] Initialize net plugin
3215482ms thread-0 net_plugin.cpp:2644 plugin_initialize ] Setting net_plugin logging level to info
3215482ms thread-0 net_plugin.cpp:2672 plugin_initialize ] host: 0.0.0.0 port: 9876
3215482ms thread-0 net_plugin.cpp:2748 plugin_initialize ] my node_id is 4954871ce17deffbfd94d99e11c26cc6d2ceaf3d22a07600d118e98c525d1a43
3215482ms thread-0 main.cpp:90 main ] nodeos version 4ec15c3
3215483ms thread-0 main.cpp:91 main ] eosio root is /Users/zhangsailei/Library/Application Support
3215483ms thread-0 chain_plugin.cpp:209 plugin_startup ] 13 N5boost16exception_detail10clone_implINS0_19error_info_injectorISt13runtime_errorEEEE: could not gain write access to the shared memory file
rethrow could not gain write access to the shared memory file:
{"my->genesis_file.generic_string()":"/Users/zhangsailei/Library/Application Support/eosio/nodeos/config/genesis.json","what":"could not gain write access to the shared memory file"}
thread-0 chain_plugin.cpp:209 plugin_startup
3215483ms thread-0 chain_plugin.cpp:209 plugin_startup ] my->genesis_file.generic_string(): /Users/zhangsailei/Library/Application Support/eosio/nodeos/config/genesis.json
3215485ms thread-0 main.cpp:95 main ] 13 N5boost16exception_detail10clone_implINS0_19error_info_injectorISt13runtime_errorEEEE: could not gain write access to the shared memory file
rethrow could not gain write access to the shared memory file:
{"my->genesis_file.generic_string()":"/Users/zhangsailei/Library/Application Support/eosio/nodeos/config/genesis.json","what":"could not gain write access to the shared memory file"}
thread-0 chain_plugin.cpp:209 plugin_startup
logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[filmio]

Yep, getting the same error here after a clean build of 3.0.

[wessies]

I get exactly the same error. I think it has to do with this already given problem a while back (#58). Question here is how rerun the first writer in order to start producing blocks again. ( I guess a simple solution is to delete all EOS files now and re-install the whole thing). However I think thats far from the optimal solution.

[Dhhhj]

I am having the same issue, its after I killed nodeos after its first run, permissions are correct on the file so I don't understand, has anyone fixed this?

It seems from the linked previous issue that I am trying to start the same node twice, so how do I fix this?

Also some basic questions,

where is the blockchain file stored?
how should I stop nodeos to stop this in the future?

thanks

[kenorb]

Make sure you're not running another nodeos process:

# ps wuax | grep nodeos

If so, kill the previous one.

[Dhhhj]

thanks kenord i was using top to see if the nodeos process was running, and it wouldn't show any.

Is there an internal command to stop nodeos?

[jgiszczak]

There is no internal command to stop nodeos. That's properly the domain of your operating system. If you configure nodeos as a systemd service, you would use systemd start and stop commands. If you configure nodeos as a FreeBSD rc.d service, you would use FreeBSD start and stop commands. Process management is not a feature of EOS.IO.

top is not a good choice to see if processes are running. It sorts by activity by default, and an idle nodeos process uses essentially no CPU time, so it falls into the noise of the rest of the system.