DM - Expert Documentation » History » Version 5
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- DM - Expert Documentation
DM - Expert Documentation¶
Starting the PUBS daemon running¶
Details are on this page. Starting the PUBS online daemon
Building up the PUBS online testbed¶
Details are on this page. Building up the PUBS online testbed
Running out of Disk Space on ubdaq-prod-evb ?¶
useful info: there are ~ 33 TB of disk space in /data/ on the evb machine. PUBS will try and clear data in /data/uboonedaq/TestRuns/ until the disk-usage reaches 40% of /data/uboonedaq/TestRuns/ is empty.
If this is the case there are several things one should do:
0) Idenfity who is using up the disk space. Options:
a) /data/uboonedaq/rawdata/ -> this is where data from "official" runs goes. Files here are seen (and should be eventually removed) by PUBS.
b) /data/uboonedaq/TestRuns/ -> this is disk-space DAQ people use to test things. It is not seen by PUBS and needs to be removed by hand in order to be cleared.
c) /data/uboonedaq/lukhanin/ -> test-space for Gennadiy. Also needs to be removed manually in order to free up space.
d) /data/OTHER/ -> data used by someone else.
If most of the space is not being used by /data/uboonedaq/rawdata/ we need to free space manually. If it is urgent to free up space (i.e. data-taking should not be interrupted and the disk will fill up rather soon) you are authorized to clear /data/uboonedaq/TestRuns/. Contact any other person who is using up a considerable amount of space and ask them to quickly remove contents in their /data/ folder.
If /data/uboonedaq/rawdata/ is using up a significant amount of space, the problem is probably PUBS' fault.
1) identify the cause of the problem. Why is disk space not being freed? Possible causes:
a) clear_binary_evb is having issues.
b) clear_binary_evb does not find any new files to clear. This indicates a possible problem with one of the projects that clear_binary_evb depends on. A possible cause could be poor network speed to drain data out of the evb machine.
Questions? Ask Kirby