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Infrequently the xrootd servers are scanned to find all the files that are on disk.
The results of these scans are available Instead of scanning everything below /glast the scan is split into the subdirectories

/glast/ASP, /glast/Data, /glast/bt, /glast/level0, /glast/mc

The result for each scan is stored in

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/nfs/farm/g/glast/u15/xrootd/files_on_disk/<YYYYMMDD>/<YYYYMMDDTHHMMSS> filelist<topdir>

where <YYYYMMDDTHHMMSS> <YYYYMMDD> is the date the scan were taken and <topdir> is the directory it started .
In stead of starting at the top level the scan is broken into the directories

/glast/ASP, /glast/Data, /glast/bt, /glast/level0, /glast/mc

...

('/' replaced by '_'). For example the result for all files below /glast/mc is in

/nfs/farm/g/glast/u15/xrootd/files_on_disk/<YYYYMMDD>/filelist_glast_mc

The file foramt is:

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Wiki Markup
 size(Bytes) atime mtime ctime filename host &nbsp; \[migrate-status\] 

The migrate-status field is optional with vaules:

status

description

-1

migrate status could not be determined (no lock file)

0

not migrated

1

migrated

e.g. :

1461254 1185332890 1178747325 1178747325 /glast/mc/ServiceChallenge/backgndSC-GR-v11r2/merit/backgndSC-GR-v11r2-000008-merit.root sulky02