Adding Files to Space Token Areas To add files already in dCache to space token areas we need to do a number of things: * Create a new space token to hold the ...
How a associate a directory to certain pools user case: we need to designate certain pools for sc07,which means when we write data to a certain directory, data wi...
We are using charles's proddisk_clean.py to clean our proddisk regularly.. 1 login dq2.aglt2.org as dq2 2.setup the env. export LFC_HOST=lfc.aglt2.org source /a...
Cleaning Up the srmspacefile Table (SRM Space token Allocations) We recently found out that our srmspacefile table in dcache was inconsistent with our actual spac...
What To Do after losing the dcache partions of a Node? Due to the rocks rebuilding failures. dcache partitions could be wiped during the rebuilding, thus we have ...
Dcache on AGLT2 service distribution: all the dcache services are physically distributed to 37 nodes. tow of them are head nodes(head01.aglt2.org and head02.aglt...
Upgading dCache Starting on the morning of May 4th 2009 AGLT2 began upgrading from dCache 1.8.0 15p12 to 1.9.2.5 as well as migrating to Chimera. This was motiva...
Dcache TroubleShooting Case 1.. node c 104 2 has some broken files which mean the md5sum of local file doesnt match the md5sum of source file.. we decided to rec...
debug on the dccp on dcache admin node root@head01 ~# dccp dcap://head01.aglt2.org/pnfs/aglt2.org/data/tdhtest3 /tmp/test3 12317 bytes in 0 seconds It works,also ...
We have a bunch of scripts which relies on the space token information, therefore,I define 2 hash based subroutine in the dcache perl Library, everytime you add/r...
How To Get Data From Dcache directly by Root when using Root, you can specify the root files in 2 different ways: 1 download these files from the dcache director...
How to add a new pool node to dCache/Chimera * Provision node via ROCKS (or other method) * Install correct kernel (if not done above): currently 2.6.38 UL5...
LOST all my edits by a key sequence...(from Emacs)... * First read dCache book for info: http://www.dcache.org/manuals/Book/start/in install.shtml http://www....
How To Add New Pools to Dcache This page is obsolete for dCache/Chimera. See HowToAddNewPoolsToChimera instead. On our existing dcache system ,I add some New ...
How to Add New Storage to dCache We will look at the example of umfs16, where 12 new pools were added. Following the xfs file system creation, all disks were mou...
How to Copy data to dcache we can use dccp , srmcp or globus url copy utilities to copy data to dcache, but dccp dosnt support recursive, srmcp will finally call ...
Directions on Draining then Removing a Pool Set pool readonly. Can start drain right away, but will likely miss a few files ssh to admin domain \c PoolManager \c...
Easy Move dcache data from pool to pool UserCase we want to retire non resilient pool umfs07_2 from dcache which holds 1.7TB data,so we need to move these data t...
How to convert a RO volume to a RW volume in AFS 1) Get tokens as 'admin' via 'kinit admin' folllowed by 'aklog' 2) Check the mount: 'fs lsmount /afs/atlas.umi...
How To Extend PoolView Purpose Allows to group pools on the web pages either according to the PoolManager groups or to customized groups. How to ? Uncomment th...
How to Move data from pool to pool (how to drain a pool) *usecase*: we want to retire the node c 2 33 from the pool nodes..so we need to move the data from po...
How To rename or RM pnfs dir Rename Just do the rename as the 'root' user. You will get the error message "mv: cannot move `xxx' to `yyy': Stale NFS fil...
Setup Atlas Space Token background details about why space revervation is needed, refer to srm space reservationdcache book. steps to set up space reservation ...
Here is from an email: In dCacheSetup (in Aglt2, it is poolSetup)you need to define: metaDataRepositoryImport=org.dcache.pool.repository.meta.file.FileMetaDataRe...
Setup Srm Space reservation background details about why space revervation is needed, refer to srm space reservationdcache book. steps to set up space reservat...
Procedure for Installing or Upgrading dCache Servers Procedure for installing dCache servers. This is tested for use on the dCache storage nodes / gridftp doors....
Upgrading dcache storage hardware This is a procedure to follow when you don't wish to create a new pool but instead copy an old one to new hardware and have it o...
Management of Dcache main services to maintain head01 : dcache core head02: postgresql pnfs dcache core pool nodes: dcache core dcache pool main configurati...
Manual Replication of Hot Files in dCache Particularly for the Health Check, we need multiple copies of the source file All work is performed in either a browser ...
Merging Existing Space Tokens When we setup space tokens for AGLT2 we assumed we needed a space token for each VO/Role that needed to be able to write to a space ...
Creation of New dCache Headnodes (Dell R610) in January 2011 As part of our Fall 2010 procurements we purchased 2 Dell R610 nodes to host the dCache services (he...
Procedure to Migrate dCache headnodes (head01/head02.aglt2.org) to new hardware and operating system. During fall 2009 and winter 2010, AGLT2 is migrating all lin...
Removing PNFS (Chimera) Ghosts There is the possibility that the chimera DB can become out of sync with the actual files stored on disk. The t_dirs table holds t...
Setting up ATLAS Area HOTDISK for AGLT2 As of mid September 2009 we need to provide a new space token area in Tiers of ATLAS call 'HOTDISK'. There are a few com...
Setting up LVS (Linux Virtual Server) for use with dCap Newer linux kernels have LVS built in (as well as our UltraLight kernels). See http://kb.linuxvirtualserv...
HowTo Shutdown a Pool Node While In Production We sometimes need to restart/reboot pool nodes and would like to make this as least disruptive to the production sy...
Testing of New dCache Storage Node Build Here is the testing result for a new storage node (summary: it works). After running \x91install_dcache.sh\x92 on UMFS16...
Track Transfers to dCache Just some quick notes on tracking specific transfers to dCache. * First, make sure the SRM logging is verbose enough (going to catali...
Upgrading from GPlazma1 to GPlazma2 on dCache 2.2.12 In preparation for upgrading to dCache 2.6 we need to reconfigure our dCache GPlazma configuration to go from...
Updating and Upgrading dCache Headnodes for AGLT2 June 2013 The dCache headnodes head01.aglt2.org and head02.aglt2.org were transitioned to VMware VMs in 2012. As...
How to Vacuum Postgresql DB sometimes, when too many deletion or updating opereations happened to the postgresql database, it would run into a transactionid probl...
Atlas Great Lakes Tier2 Web How to contact us * For problems, contact us through our signatures here: * Main.WenjingWu AGLT2 Manager and University of M...