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Hi Andy, I've updated our wiki with the explicit cron we use. Basically, after cvmfs_fsck -p has run then any corrupt files are moved to a quarantine directory in the cache area for that repository, and a log entry is written. So, since the corrupt file is not longer in the cache then things will work - the WN is not unusable. --Ian ------------------------------------------------ Ian Collier [log in to unmask] RAL Tier1 Fabric Team R89 F18, STFC Rutherford Appleton Laboratory DIDCOT OX11 0QX UK +44 (0)1235 445440 +44 (0)7866 510075 ------------------------------------------------ On 19 Oct 2011, at 14:31, Andrew Washbrook wrote: > Hi, > > Does anyone know if there is any official recommendation for running cvmfs_fsck on WNs? I keep hearing it being mentioned but I cannot find any guidelines for appropriate use - especially for sites now migrating to CVMFS. > > In particular I would like to find out: > - What command line arguments (if any) are used by sites running cvmfs_fsck > - How frequently this should be run > - What impact this process has on worker node load (and how long the operation takes) > - What to do if cvmfs_fsck throws errors: is the local cache and subsequently the WN unusable? > > If you have any advice it would be much appreciated! > > Thanks for your help, > Andy. > -- > The University of Edinburgh is a charitable body, registered in > Scotland, with registration number SC005336.