Quota issue with SOF storage volumes

Dear users,

We are aware of an issue with volume quotas in the SOF storage system, affecting GWS volumes /gws/nopw/j04/* and CEDA Archive volumes. It appears that the system is permitting writes beyond the initial volume quota, then artificially increasing the quota reported by “df -H” up to a point where writes are no longer possible. The volume quota is initially set when a volume is created; this is recorded in the JASMIN Projects Portal and available to view in the GWS Dashboard at https://mon.jasmin.ac.uk  (accounts portal credentials required). This is the true volume quota: it appears that the value reported by df -H has become unreliable in these cases. The suggested course of action for GWS managers is as follows:

• Use the Projects Portal or GWS Dashboard to check the true quota
• If the “used” value reported by df -H exceeds this value, some data will need to be removed to bring the usage down below the true quota
• The GWS Scanner UI can help visualise where space is being consumed within a GWS (but take care to note the date of the last scan)
• Once usage is brought below the true quota, normal operation of the volume should resume

We appreciate this may cause some difficulties: the system team is actively engaged with the storage vendor on this issue to find a solution.

With apologies for any inconvenience, JASMIN Team