Scheduled maintenance is planned for Tuesday 2nd March 2021, which may cause some disruption to JASMIN and CEDA services. On a regular (roughly quarterly) basis, important updates are applied to systems within the JASMIN infrastructure (which also hosts the CEDA Archive and associated services) in order to keep them up to date and secure. Some servers may need to be rebooted in order for these changes to take effect, so there may be an interruption to some JASMIN and CEDA services on this date. Other work may also be scheduled for this date in order to minimise disruption to users. ...

We believe that the problems affecting Elastic Tape and JDMA to now be solved. Users can now start using the services again. ...

Server nx-login2.jasmin.ac.uk needs to be rebooted at 16:00 today, Wednesday 17th February, to clear up dead/hanging processes. We apologise for any inconvenience this may cause. ...

Dear JASMIN users, The JASMIN scientific analysis machines sci[3,5].jasmin.ac.uk need to be rebooted at 09:00 AM tomorrow, Wednesday 17th February, to clear up dead/hanging processes. ...

13:30 11th Feb - update 1 There is currently an issue with the LOTUS batch scheduler - SLURM. This has manifested in unusually long pending time per job, a slow response time when querying SLURM and occasional failed job submissions.We are aware of the issue and are working on a resolution. Please do not email the helpdesk about issues related to SLURM. We will update you when we know more. ...

Dear users, As announced last week, the following servers will be decommissioned tomorrow Friday 12th Feb: jasmin-xfer[23].ceda.ac.uk (high-performance data transfer servers) now replaced by hpxfer[12].jasmin.ac.uk: please use these instead. ftp.ceda.ac.uk (CEDA Archive FTP server) The new host for this service will operate at the same name ftp.ceda.ac.uk, but if you have used the hostname ftp2.ceda.ac.uk directly, then you are advised to change to using the alias ftp.ceda.ac.uk so that the change happens transparently to you when the old server is decommissioned. We have been aware for a while of an issue affecting transfers to and from some file system (particularly affecting transfers made using Globus) but this is still under investigation. Please look out for further announcements about this and replacement of the remaining high-performance data transfer servers. ...

Job opportunity - JASMIN Software Developer We are looking for an enthusiastic individual to contribute to the evolution of JASMIN – our globally unique facility for data-intensive computing for the environmental sciences. You will be working with world experts developing innovative technical solutions to address the challenge of building, growing and maintaining an infrastructure to support the needs of researchers in their work processing and analysing complex, high volume scientific data. ...

We have recently been having lots of problems with the Elastic Tape system. This has resulted in the failure of both ingesting and retrieving data. We are actively investigating this, in conjunction with our colleagues in the Scientific Computing Department. ...

Dear users As reported last week, we have been dealing with an issue of apparent file corruption affecting a relatively small number of files in some volumes with paths beginning /gws/nopw/j04. We have been receiving assistance from the storage vendor to resolve the issue and are now in a position to announce that the majority of affected files have now been successfully repaired, with no loss of user data. A process to scrub/repair a remaining list of some 1,281 files (as of earlier today) is now underway and should complete over the coming weekend. 1.4 billion files have now been checked by this process. The vendor has provided further updated software releases which have been applied and we are now confident that once the above process has been completed, there should be no further cause for concern. ...