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.aglt2.org), the other 35 nodes are acted as pool nodes of dcache which data are physically stored on ..

services are distributed as follows:

head01:

lm domain (location manager) 
dCache domain
admind domain  
httpd domain 
utility domain 
infoProviderDomain  
gPlazma domain 
dcap domain 
srm 
gsidcap 
gsiftp  

head02:

pnfs server 
replica Manager 
dcap domain
dir domain 

*pool node

dcap (there are 5 dcap doors running on each node :dcap-1 dcap-2 dcap-3 dcap-4 dcap-5)
gsidcap
gsiftp
pool 

pool nodes list:

head02.aglt2.org 
head01.aglt2.org 
c-1-11.aglt2.org 
c-1-15.aglt2.org 
c-1-16.aglt2.org 
c-1-17.aglt2.org 
c-1-18.aglt2.org 
c-1-19.aglt2.org 
c-1-20.aglt2.org 
c-1-21.aglt2.org 
c-1-22.aglt2.org 
c-1-23.aglt2.org 
c-1-24.aglt2.org 
c-1-28.aglt2.org 
c-1-29.aglt2.org 
c-1-30.aglt2.org 
c-2-28.aglt2.org 
c-2-29.aglt2.org 
c-2-30.aglt2.org 
c-2-31.aglt2.org 
c-2-32.aglt2.org 
c-2-34.aglt2.org 
c-2-35.aglt2.org 
c-2-36.aglt2.org 
c-2-37.aglt2.org 
c-2-38.aglt2.org 
c-3-19.aglt2.org 
c-3-20.aglt2.org 
c-3-21.aglt2.org 
c-3-22.aglt2.org 
c-3-23.aglt2.org 
c-3-24.aglt2.org 
c-3-25.aglt2.org 
c-3-26.aglt2.org 
c-3-27.aglt2.org 
c-3-28.aglt2.org 
c-3-29.aglt2.org 

more information about dcahce cell services ,please refer to the web monitor page http://head01.aglt2.org:2288/cellInfo

PS : service function

lm domain (location manager) which is responsible for the communication of each different domain on different nodes

dCache domain
admind domain  which provides an admin interface for administrators of dache system
httpd domain which provides a web-based monitor interface for the whole dcache system
utility domain which is resposible for space management and pin management
infoProviderDomain  for information collector
gPlazma domain which is the authorization and anthentication module of dcache
dcap domain which is responsible for requests by dcap protocol from dcache clients
srm which is responsible for requests by srm protocol from dcache clients
gsidcap  which is responsible for requests by gsidcap(gsi based dcap protocol) protocol from dcache clients
gsiftp  which is responsible for requests by gsiftp protocol from dcache clietns
pnfs server :provides the metadata service for the whole system
replica Manager : manage the copies of resilient files in dcache

POOLs of dcache

There are totally 58 pools of our dcache system,its total capacity is about 37TB,(for more detailed information about the pool space ,please refer to the web monitor page http://head01.aglt2.org:2288/usageInfo). For some of pool nodes who have more than one harddisk,there are more than one pools on each node.Generally ,each harddisk is corresponding to a pool. These 58 pools are devided into 2 pool groups ,one is for resilient files which means there are at least 2 and at most 3 copies for these files,another is for unresilient file which means there is only one copy of these files in the storage pools. 28 pools are for resilient files,the other 30 pools are for unresilient files.

resilient pools:

   c-3-22_1  (enabled=true;active=13;rdOnly=false;links=0;pgroups=1)
   c-1-16_3  (enabled=true;active=5;rdOnly=false;links=0;pgroups=1)
   c-1-24_1  (enabled=true;active=3;rdOnly=false;links=0;pgroups=1)
   c-2-30_1  (enabled=true;active=15;rdOnly=false;links=0;pgroups=1)
   c-1-15_2  (enabled=true;active=8;rdOnly=false;links=0;pgroups=1)
   c-3-20_1  (enabled=true;active=1;rdOnly=false;links=0;pgroups=1)
   c-1-21_2  (enabled=true;active=1;rdOnly=false;links=0;pgroups=1)
   c-1-20_1  (enabled=true;active=29;rdOnly=false;links=0;pgroups=1)
   c-3-26_1  (enabled=true;active=26;rdOnly=false;links=0;pgroups=1)
   c-1-16_1  (enabled=true;active=3;rdOnly=false;links=0;pgroups=1)
   c-1-17_2  (enabled=true;active=5;rdOnly=false;links=0;pgroups=1)
   c-2-32_1  (enabled=true;active=28;rdOnly=false;links=0;pgroups=1)
   c-1-11_1  (enabled=true;active=20;rdOnly=false;links=0;pgroups=1)
   c-1-18_3  (enabled=true;active=15;rdOnly=false;links=0;pgroups=1)
   c-1-18_1  (enabled=true;active=11;rdOnly=false;links=0;pgroups=1)
   c-2-38_1  (enabled=true;active=9;rdOnly=false;links=0;pgroups=1)
   c-3-24_1  (enabled=true;active=5;rdOnly=false;links=0;pgroups=1)
   c-1-20_3  (enabled=true;active=29;rdOnly=false;links=0;pgroups=1)
   c-2-34_1  (enabled=true;active=9;rdOnly=false;links=0;pgroups=1)
   c-2-36_1  (enabled=true;active=26;rdOnly=false;links=0;pgroups=1)
   c-1-22_3  (enabled=true;active=14;rdOnly=false;links=0;pgroups=1)
   c-1-22_1  (enabled=true;active=14;rdOnly=false;links=0;pgroups=1)
   c-1-29_1  (enabled=true;active=12;rdOnly=false;links=0;pgroups=1)
   c-1-24_3  (enabled=true;active=4;rdOnly=false;links=0;pgroups=1)
   c-2-28_1  (enabled=true;active=19;rdOnly=false;links=0;pgroups=1)
   c-1-19_2  (enabled=true;active=9;rdOnly=false;links=0;pgroups=1)
   c-1-23_2  (enabled=true;active=16;rdOnly=false;links=0;pgroups=1)

unresilient pools:

   c-1-23_3  (enabled=true;active=1;rdOnly=false;links=0;pgroups=1)
   umt3int01_1  (enabled=true;active=4;rdOnly=false;links=0;pgroups=1)
   c-1-22_2  (enabled=true;active=0;rdOnly=false;links=0;pgroups=1)
   c-2-35_1  (enabled=true;active=0;rdOnly=false;links=0;pgroups=1)
   c-3-27_1  (enabled=true;active=26;rdOnly=false;links=0;pgroups=1)
   c-1-15_1  (enabled=true;active=22;rdOnly=false;links=0;pgroups=1)
   c-1-16_2  (enabled=true;active=20;rdOnly=false;links=0;pgroups=1)
   umt3int02_1  (enabled=true;active=9;rdOnly=false;links=0;pgroups=1)
   c-1-17_3  (enabled=true;active=18;rdOnly=false;links=0;pgroups=1)
   c-1-28_1  (enabled=true;active=13;rdOnly=false;links=0;pgroups=1)
   c-1-19_3  (enabled=true;active=23;rdOnly=false;links=0;pgroups=1)
   c-3-28_1  (enabled=true;active=3;rdOnly=false;links=0;pgroups=1)
   c-1-17_1  (enabled=true;active=19;rdOnly=false;links=0;pgroups=1)
   c-3-23_1  (enabled=true;active=11;rdOnly=false;links=0;pgroups=1)
   c-2-37_1  (enabled=true;active=17;rdOnly=false;links=0;pgroups=1)
   c-1-21_3  (enabled=true;active=14;rdOnly=false;links=0;pgroups=1)
   c-1-21_1  (enabled=true;active=15;rdOnly=false;links=0;pgroups=1)
   c-2-29_1  (enabled=true;active=18;rdOnly=false;links=0;pgroups=1)
   c-1-19_1  (enabled=true;active=24;rdOnly=false;links=0;pgroups=1)
   c-1-18_2  (enabled=true;active=29;rdOnly=false;links=0;pgroups=1)
   c-1-15_3  (enabled=true;active=21;rdOnly=false;links=0;pgroups=1)
   umt3int03_1  (enabled=true;active=24;rdOnly=false;links=0;pgroups=1)
   c-3-25_1  (enabled=true;active=3;rdOnly=false;links=0;pgroups=1)
   c-1-20_2  (enabled=true;active=12;rdOnly=false;links=0;pgroups=1)
   c-1-24_2  (enabled=true;active=17;rdOnly=false;links=0;pgroups=1)
   c-3-19_1  (enabled=true;active=16;rdOnly=false;links=0;pgroups=1)
   c-2-33_1  (enabled=true;active=20;rdOnly=false;links=0;pgroups=1)
   c-1-23_1  (enabled=true;active=1;rdOnly=false;links=0;pgroups=1)
   c-2-31_1  (enabled=true;active=29;rdOnly=false;links=0;pgroups=1)
   c-3-21_1  (enabled=true;active=1;rdOnly=false;links=0;pgroups=1)
   c-1-30_1  (enabled=true;active=20;rdOnly=false;links=0;pgroups=1)
   c-3-29_1  (enabled=true;active=4;rdOnly=false;links=0;pgroups=1)

-- WenjingWu - 24 Sep 2007