RAL Tier1 weekly operations castor 22/02/2019
1. Problems encountered this week
2. Upgrades/improvements made this week
3. What are we planning to do next week?
4. Long-term project updates (if not already covered)
5. Special topics
7. Review Fabric tasks
9. Availability for next week
- Overweekend, CERN EOS for ALICE had an outage, which led to all the traffic from CERN going to aliceDisk, which overwhelmed it and caused trouble.
- LHCb currently have a problem reading some files on lhcbDst. The CASTOR team is investigating.
- Some disk2disk copies were attempted; this has been explained as being due to LHCb failing to read a file from the lhcbDst service class, and then trying the default service class, which would trigger a d2d copy to lhcbRawRdst (which fails anyway).
- We don't seem to have a problem with the local data integrity.
- gdss776 crashed and was taken out of production, it has been returned in readonly mode.
- New facd0t1 disk servers
- Ready to go into production from a CASTOR perspective.
- The hardware has been racked, but hasn't been cabled yet.
- Migrated ALICE to WLCGTape.
- Argo tests are failing for srm-alice since the upgrade.
- Due to the Argo tests insisting on SRM access, which ALICE don't use, we have marked srm-alice as unmonitored.
- New Facilities headnodes - DNS request created
- Decommissioned the former genTape disk servers
- LHCb disk server move complete on Tuesday.
Plans for next few weeks
- Examine further standardisation of CASTOR pool settings.
- CASTOR team to generate a list of nonstandard settings and consider whether they are justified.
- Replacement of Facilities CASTOR d0t1 ingest nodes
- Now ready to deploy once Fabric team are ready.
- New Facilities DB environment will be ready on Monday.
- New CASTOR WLCGTape instance.
- LHCb migration is with LHCb at the moment, they are not blocked. Mirroring of lhcbDst to Echo complete.
- CASTOR disk server migration to Aquilon.
- Prototype profile passes functional tests perfectly.
- Need to discuss Ganglia monitoring/metrics for Aquilonised disk servers. GP to try, follow up with JK.
- Ganglia seems to Just Work (TM)
- One of the test InfluxDB servers (05) can be used for CASTOR InfluxDB development.
- Telegraf is working on an Aquilonised disk server and it is successfully sending core metrics to Influx.
- Deadline of end of April to get Facilities moved to generic VM headnodes and 2.1.17 tape servers.
- Ticket with Fabric team to make the VMs.
- RA working with James to sort out the gridmap-file distribution infrastructure and get a machine with a better name for this than castor-functional-test1
- AD wants us to make sure that experiments cannot write to that part of namespace that was used for d1t0 data: namespace cleanup/deletion of empty dirs.
- Some discussion about what exactly is required and how this can be actually implemented.
- CASTOR team proposal is to switch all of these directories to a fileclass with a requirement for a tape copy but no migration route; this will cause an error whenever any writes are attempted.
- RA to look at making all fileclasses have nbcopies >= 1
- Everyone in
- Namespace dumps have broken.
- OK with writing these to tape.
- Discussed general principle that everything written to wlcgTape must be migrated to tape.
- This preserves simplicity and eliminates the failure mode of experiments writing to an area they think goes to tape but doesn't.
GP on call