How to flush to disk without sync?

Asked Apr 02 '14 at 10:58

Active Apr 02 '14 at 11:15

Viewed 51 times

When my program is running a config file is often saved via python scripts, however the system is frequently shut down unsafely. Any changes made to the config recently are not there at boot. A user must either shut down in the correct manner or wait a while for the config to save properly to disk. I have tried syncing when a user saves a config but the issue still occurs, any other ideas?

To call my python scripts I use clish, which basically is using bash. So in bash i make a call to sync.

<COMMAND name="copy running-config startup-config"
        help="Copy to startup configuration">
        <CONFIG operation="dump" file="/path/startup-config"/>
        <ACTION>
        sync
        </ACTION>
    </COMMAND>

edited Apr 02 '14 at 11:15

asked Apr 02 '14 at 10:58

Paul

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Please show exactly what you are doing. – Jayanth Koushik Apr 02 '14 at 11:00
@JayanthKoushik edited in more information – Paul Apr 02 '14 at 11:15
@Paul: You need to show what happens in the python script i.e. how are you implementing sync? – Jayanth Koushik Apr 02 '14 at 11:18
@JayanthKoushik In between the action tags above is bash. So I call sync from bash. I suppose the python doesn't matter as I am not calling sync from there. http://code.google.com/p/klish/wiki/ACTION – Paul Apr 02 '14 at 11:25
2

Sync by itself will not work. You need to flush the file (`file.flush()`) first. Take a look at this post too: http://stackoverflow.com/questions/7127075/what-exactly-the-pythons-file-flush-is-doing – Jayanth Koushik Apr 02 '14 at 11:29
@JayanthKoushik thank you, will have a look :) – Paul Apr 02 '14 at 11:33

How to flush to disk without sync?

0 Answers0