Changes between Initial Version and Version 1 of tier-one-meeting-20170314


Ignore:
Timestamp:
03/14/17 15:09:35 (3 years ago)
Author:
paul
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • tier-one-meeting-20170314

    v1 v1  
     1[[TOC(depth=0)]] 
     2= dCache Tier I meeting March 14, 2017 = 
     3[part of a [wiki:developers-meetings series of meetings]] 
     4 
     5== Present == 
     6 
     7dCache.org(Paul), IN2P3(), Sara(), Triumf(), BNL(), NDGF(Ulf), PIC(Marc), KIT(Xavier), Fermi(), CERN() 
     8 
     9= Agenda = 
     10 
     11(see box on the other side) 
     12 
     13= Site reports = 
     14 
     15== KIT == 
     16 
     17dCache is running just fine for the last month. 
     18 
     19=== SQL scripts === 
     20 
     21Paul to remind Tigran when he's back from NFS meeting. 
     22 
     23=== pools repo 600 TiB === 
     24 
     25PIC has 380 TiB pools (with 3.3x10^6 files), with XFS. 
     26 
     27Need to tune the je properties (for the BerkeleyDB) to boost the startup time.  These used to need 4 hours; now less than 30 minutes. 
     28Also "btree memory for java" Java max heap size to keep btree  
     29 
     30NDGF's largest pools are 100 TiB. 
     31 
     32Modern dCache pools for start-up is much less ~10. 
     33 
     34Paul pointed out that these are tunable via the `pool.plugins.meta.db!` properties 
     35 
     36Marc shared PIC notes on this topic: 
     37 
     38http://pwiki.pic.es/index.php/DCACHE_CHECK_POOL_METADATA 
     39 
     40=== plugin === 
     41 
     42Paul advised on how to do logging. 
     43 
     44=== Tape migration  === 
     45 
     46RT 9147 
     47 
     48Paul to chase up Tigran about this information. 
     49 
     50== NDGF == 
     51 
     52Quite nice. 
     53 
     54Updated to 3.0.10 last week, directly after released. 
     55 
     56All the problems with the ZooKeeper are fixed: no extra errors now. 
     57 
     58We haven't been able to reboot  
     59 
     60=== pool startup found problems === 
     61 
     62Seems that v3.0.10 better at scanning files files that have been uploaded in December with zero byte size. 
     63 
     64370,000 zero-byte files uploaded by Alice.  They have messed up when uploading from Japan. 
     65 
     66== PIC == 
     67 
     68Upgrade to 2.16.  One issue 
     69 
     70=== Upgrade problems === 
     71 
     72RT 9153 
     73 
     74pinv3 table was unable to drop it. 
     75 
     76 
     77Four tickets in the last two week. 
     78 
     79===  === 
     80 
     81RT 9150  multiple restore requests 
     82 
     83= Support tickets for discussion = 
     84 
     85[Items are added here automagically] 
     86 
     87= DTNM = 
     88 
     89Proposed: same time, next week.