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Difference between revisions of "Globus Online testing"

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This page is a summary of the tests that Karolis Eigelis from the EGI User Community Support Team (UCST) carried out with the European Globus Online service during October-November 2012.
The Globus Online service can be used with GridFTP servers of EGI that are registered in the GOCDB system. Using Globus Online with SRM services may cause damage to these storages and therefore is not recommended.
 
If your EGI Virtual Organisation would like to use the Globus Online service, then the VO should request from its resource providers the setup of GridFTP servers that are registered in the EGI GOCDB.
The tests helped UCST establish a [[Globus_Online_cookbook_for_EGI_VOs|Globus Online Cookbook for EGI Virtual Organisations]]. Other results of the tests are a number of conclusions:
EGI.eu is in discussion with the DMP community about defining a safe configuration for DPM SRM servers that would allow the mixed use of DPM storages with SRM and Globus Online.
 
For further information please email the EGI.eu User Community Support Team: ucst@egi.eu
* Because of lack of regulations, restrictive permissions are set on local storage elements for the main SRM directory.
* VOInfoPath in BDII may be the path only for SRM interface, but patgh for the related GridFTP server is different.
* The SRM hostname that is advertised in BDII is not always the same site where the GridFTP server operates (but usually is). Globus Online uses GridFTP endpoints.
 
The tests involved the following services:
* Globus Online: http://www.globusonline.eu
* MyProxy server: px.grid.sara.nl
* User Interface: bosui.nikhef.nl
* BDII: bdii.grid.sara.nl
* Storage Elements:
** DPM 1.8.2 - tbn18.nikhef.nl
** dCache 2.2.4 - srm.grid.sara.nl
** Storm 1.8.2 - bostorm.bo.infn.it
* VO: dteam
 
 
<b>SRM storage directory</b>
 
<pre>
-bash-3.2$ lcg-info --list-se --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'SE=bostorm.bo.infn.it' --attrs 'VOInfoPath'
- SE: bostorm.bo.infn.it
  - VOInfoPath          /dteam
</pre>
 
VOInfoPath is /dteam for SRM interface:
 
<pre>
-bash-3.2$ srmls -2 srm://bostorm.bo.infn.it:8444/dteam
Picked up _JAVA_OPTIONS: -Xmx512M
  0 /dteam/
      599 /dteam/20080528-143657-3356-0.txt
      755 /dteam/20081117-145803-15525-0.txt
      599 /dteam/20080528-143353-2676-0.txt
      0 /dteam/misurelli
      0 /dteam/testas
      0 /dteam/-acls
      599 /dteam/20080528-145209-4387-0.txt
      755 /dteam/20081117-145800-15187-0.txt
      0 /dteam/karolis
      599 /dteam/20080528-144905-4048-0.txt
      755 /dteam/20081117-150109-16203-0.txt
      0 /dteam/generated
      0 /dteam/dbauer
</pre>
 
but if we connnect using GridFTP, /dteam directory even does not exist:
 
<pre>
-bash-3.2$ uberftp bostorm.bo.infn.it "ls /dteam"
220 bostorm.bo.infn.it GridFTP Server 6.10 (gcc64, 1334324800-83) [Globus Toolkit 5.2.0] ready.
230 User dteam028 logged in.
Could not list /dteam: 500-Command failed. : System error in stat: No such file or directory
500-A system call failed: No such file or directory
500 End.
</pre>
 
because , it is a "symlink" in SRM WS to real directory which is /storage/dteam, but only SRM interface may access it:
 
<pre>
-bash-3.2$ uberftp bostorm.bo.infn.it "ls /storage"
220 bostorm.bo.infn.it GridFTP Server 6.10 (gcc64, 1334324800-83) [Globus Toolkit 5.2.0] ready.
230 User dteam028 logged in.
drwxrwxr-x  21  storm  storm  4096 Sep 26 12:45  alice
drwxrwxr-x  4  storm  storm  4096 Sep 26 12:45  atlas
drwxrwxr-x  3  storm  storm  4096 Sep 26 12:45  cms
drwxr-x---  2  storm  storm  4096 Sep 26 12:45  comput-er.it
drwxrwxr-x  2  storm  storm  4096 Jun 29 09:34  computer
drwxrwxr-x  6  storm  storm  4096 Oct 29 15:01  dteam
drwxr-x---  2  storm  storm  4096 Sep 26 12:45  infngrid
drwx------  2  root  root  16384 Jun  7 18:43  lost+found
drwxrwxr-x  4  storm  storm  69632 Nov  2 09:58  ops
-bash-3.2$ uberftp bostorm.bo.infn.it "ls /storage/dteam"
220 bostorm.bo.infn.it GridFTP Server 6.10 (gcc64, 1334324800-83) [Globus Toolkit 5.2.0] ready.
230 User dteam028 logged in.
Could not list /storage/dteam: 500-Command failed. : System error in scandir: Permission denied
500-A system call failed: Permission denied
500 End.
</pre>
 
 
=== Directory listing on GlobusOnline ===
 
On GO Web, if directory is empty, GO Web fails with error listing that directory, if at least on file exists it works fine.
 
e.g. if i try to enter the directory which is empty i get:<br>
 
<pre>
"Could not access /dpm/nikhef.nl/home/dteam/karolis.
Please check the path and try again.
Error listing directory '/dpm/nikhef.nl/home/dteam/karolis/' on endpoint 'ekarolis#nikhef_DPM':
Error: Embedded '/' in '/dpm/nikhef.nl/home/dteam/karolis' dirlist: dirlist/recurse.cpp:206:
void _process_direntry(MLSDEntry*, OpDirlist*): Assertion `0' failed. hide details"
</pre>       
 
It fails on Nikhef DPM node, but works fine on SARA dCache node.<br>
 
=== SRM -> GO endpoint ===
 
Go endpoint can be created from all three types (DPM, dCache, STORM) of storage elements within EGI, but SEs have to meet some requirements:
 
 
Software versions:
 
* GridFTP compatible versions with GlobusOnline access methods within EGI
 
 
Gathering info within EGI:
 
<b>Retrieve all SEs from BDII</b>
<pre>
-bash-3.2$ ldapsearch -LLL -h bdii.grid.sara.nl -p 2170 -x -b mds-vo-name=local,o=grid '(objectClass=GlueSE)' GlueSEUniqueID|grep GlueSEUniqueID:|awk '{print $2}' > EGI_ALL_SE_HOSTS
</pre>
 
Count how much hosts we have
<pre>
bash-3.2$ wc -l EGI_ALL_SE_HOSTS
489 EGI_ALL_SE_HOSTS
</pre>
 
OR
 
<pre>
-bash-3.2$ lcg-info --list-se --bdii ldap://bdii.grid.sara.nl:2170 --attrs 'SE'|tr -d '\-SE:[:blank:]'|tr -s '\r' '\n'|sort|uniq|wc -l
483
</pre>
 
 
Probe for GridFTP 2811 port EGI_ALL_SE_HOSTS
<pre>
-bash-3.2$ for i in `cat EGI_ALL_SE_HOSTS`;do echo ¨Connecting to $i `nc -w 2 $i 2811`¨;done|tee EGI_ALL_SE_GRIDFTP_VERSIONS
</pre>
 
Count how many of them responded with GridFTP open
<pre>
-bash-3.2$ grep FTP EGI_ALL_SE_GRIDFTP_VERSIONS|wc -l
299
</pre>
 
What are the GridFTP Server versions
<pre>
-bash-3.2$ awk '{print $8}' EGI_ALL_SE_GRIDFTP_VERSIONS|sort|uniq
2.3
2.7
2.8
3.23
3.28
3.33
6.10
6.14
6.5
</pre>
 
<b>Lets see how many types of storage exists in EGI </b>
 
<pre>
-bash-3.2$ ldapsearch -LLL -h bdii.grid.sara.nl -p 2170 -x -b mds-vo-name=local,o=grid '(&(objectClass=GlueSE))' GlueSEImplementationName|grep ^GlueSE|sort|uniq
GlueSEImplementationName: ARC
GlueSEImplementationName: bestman
GlueSEImplementationName: BeStMan
GlueSEImplementationName: CASTOR
GlueSEImplementationName: classicSE
GlueSEImplementationName: dcache
GlueSEImplementationName: dCache
GlueSEImplementationName: DPM
GlueSEImplementationName: HDFS
GlueSEImplementationName: StoRM
GlueSEImplementationName: xrootd
</pre>
 
How many of DPM, dCache, Storm ?
<pre>
-bash-3.2$ ldapsearch -LLL -h bdii.grid.sara.nl -p 2170 -x -b mds-vo-name=local,o=grid '(&(objectClass=GlueSE)(GlueSEImplementationName=dcache))' GlueSEUniqueID|grep ^GlueSE|wc -l
79
-bash-3.2$ ldapsearch -LLL -h bdii.grid.sara.nl -p 2170 -x -b mds-vo-name=local,o=grid '(&(objectClass=GlueSE)(GlueSEImplementationName=dpm))' GlueSEUniqueID|grep ^GlueSE|wc -l
217
-bash-3.2$ ldapsearch -LLL -h bdii.grid.sara.nl -p 2170 -x -b mds-vo-name=local,o=grid '(&(objectClass=GlueSE)(GlueSEImplementationName=storm))' GlueSEUniqueID|grep ^GlueSE|wc -l
54
</pre>
 
 
<b>Retrieve only SRM hosts from BDII</b>
 
<pre>
bash-3.2$ ldapsearch -LLL -h bdii.grid.sara.nl -p 2170 -x -b mds-vo-name=local,o=grid '(&(objectclass=GlueService)(GlueServiceType=SRM))' GlueServiceEndpoint |grep GlueServiceEndpoint| awk '{print $2}'|sort|uniq|sed -e '/managerv1/d'|sed -e 's/httpg:\/\///g'|sed -e 's/:.*//' > EGI_ALL_SRM_ENDPOINTS
</pre>
 
Count how much SRM endpoints we have
<pre>
-bash-3.2$ wc -l EGI_ALL_SRM_ENDPOINTS
423 EGI_ALL_SRM_ENDPOINTS
</pre>
 
OR
 
<pre>
-bash-3.2$ lcg-info --list-service --bdii ldap://bdii.grid.sara.nl:2170 --query 'ServiceType=SRM'|awk {'print $3'}|sort|uniq|sed -e '/managerv1/d'|sed -e 's/httpg:\/\///g'|sed -e 's/:.*//'|wc -l
420
</pre>
 
 
Configuration issues:
 
* GridFTP must accept VOMS proxy e.g. user is mapped to /home/dteam009 at storage element
* Main storage directory used by SRM must allow VO member using his VOMS proxy to access it e.g. /storage/dteam, and not only his home directory which is e.g. /home/dteam009
* BDII or SRM WS should provide the real path to the main storage directory used on storage element e.g. VOInfoPath from BDII MAY contain the path for SRM ONLY and SRM does the mapping to the real path, but GridFTP does not know how to do that mapping.
 
Note: Configuration issues may be different, depending on how EGI decides to configure SRM/GridFTP/SEs in general and how GlobusOnline finds important information within EGI):
 
=== File operations ===
 
All operations below were performed succesufully:
 
a) copy file using SRM and listing file using GO Web<br>
b) copy file using GO Web and listing file using SRM<br>
c) checking if correct Disk Used Sizes are reported by BDII (transfering at least 1GB)<br>
d) deleting file using SRM (file was put by using GO Web)<br>
e) deleting file using GO Web (file was put by using SRM)<br>
f) Transfer file from NIKHEF DPM to SARA dCache.<br>
 
 
1) Picked up few SEs:
 
DPM 1.8.2 - tbn18.nikhef.nl<br>
dCache 2.2.4 - srm.grid.sara.nl<br>
STORM 1.8.2 - bostorm.bo.infn.it<br>
 
2) Finding SRM endpoints for these SEs:
 
<pre>
-bash-3.2$ lcg-info --list-service --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'ServiceType=SRM' --attrs 'ServiceEndpoint'| grep tbn18.nikhef.nl
- Service: httpg://tbn18.nikhef.nl:8446/srm/managerv2
  - ServiceEndpoint    httpg://tbn18.nikhef.nl:8446/srm/managerv2
 
-bash-3.2$ lcg-info --list-service --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'ServiceType=SRM' --attrs 'ServiceEndpoint'| grep srm.grid.sara.nl
- Service: httpg://srm.grid.sara.nl:8443/srm/managerv2
  - ServiceEndpoint    httpg://srm.grid.sara.nl:8443/srm/managerv2
 
-bash-3.2$ lcg-info --list-service --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'ServiceType=SRM' --attrs 'ServiceEndpoint'| grep bostorm.bo.infn.it
- Service: httpg://bostorm.bo.infn.it:8444/srm/managerv2
  - ServiceEndpoint    httpg://bostorm.bo.infn.it:8444/srm/managerv2
</pre>
 
3) Finding SRM VO home path for these SRM endpoints:
 
<pre>
-bash-3.2$ lcg-info --list-se --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'SE=tbn18.nikhef.nl' --attrs 'VOInfoPath'
- SE: tbn18.nikhef.nl
  - VOInfoPath          /dpm/nikhef.nl/home/dteam
 
-bash-3.2$ lcg-info --list-se --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'SE=srm.grid.sara.nl' --attrs 'VOInfoPath'
- SE: srm.grid.sara.nl
  - VOInfoPath          /pnfs/grid.sara.nl/data/dteam
 
-bash-3.2$ lcg-info --list-se --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'SE=bostorm.bo.infn.it' --attrs 'VOInfoPath'
- SE: bostorm.bo.infn.it
  - VOInfoPath          /dteam
</pre>
 
4) Listing files in SRM endpoints:
 
<pre>
-bash-3.2$ srmls -2 srm://tbn18.nikhef.nl:8446/dpm/nikhef.nl/home/dteam
Picked up _JAVA_OPTIONS: -Xmx512M
  0 /dpm/nikhef.nl/home/dteam/
< output truncated >
 
-bash-3.2$ srmls -2 srm://srm.grid.sara.nl:8443/pnfs/grid.sara.nl/data/dteam
Picked up _JAVA_OPTIONS: -Xmx512M
  512 /pnfs/grid.sara.nl/data/dteam/
< output truncated >
 
-bash-3.2$ srmls -2 srm://bostorm.bo.infn.it:8444/dteam
Picked up _JAVA_OPTIONS: -Xmx512M
  0 /dteam/
< output truncated >
</pre>
 
5) Listing used and total space on SEs (in GB units):
 
<pre>
-bash-3.2$ ldapsearch -LLL -h tbn18.nikhef.nl -p 2170 -x -b mds-vo-name=resource,o=grid '(&(objectClass=GlueSA)(GlueSAAccessControlBaseRule=VO:dteam))' GlueSATotalOnlineSize GlueSAUsedOnlineSize
dn: GlueSALocalID=test:replica:online,GlueSEUniqueID=tbn18.nikhef.nl,Mds-Vo-na
me=resource,o=grid
GlueSATotalOnlineSize: 32
GlueSAUsedOnlineSize: 4
 
-bash-3.2$ lcg-info --list-se --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'SAVOs=VO:dteam' --attrs 'UsedOnline,TotalOnline'|grep srm.grid.sara.nl -A 7
- SE: srm.grid.sara.nl
  - UsedOnline          0
                        0                           
                        0                           
  - TotalOnline        0
                        15000                       
                        58681
 
Note: three values because it is dCache.
 
-bash-3.2$ lcg-info --list-se --bdii ldap://bdii.grid.sara.nl:2170 --vo dteam --query 'SAVOs=VO:dteam' --attrs 'UsedOnline,TotalOnline'|grep bostorm.bo.infn.it -A 3
- SE: bostorm.bo.infn.it
  - UsedOnline          0
  - TotalOnline        100
 
</pre>
 
6) Uploading file from UI via SRM client to SE endpoint:
 
<pre>
-bash-3.2$ srmcp -2 file:///100M.rand  srm://tbn18.nikhef.nl:8446/dpm/nikhef.nl/home/dteam/100M.rand -debug
Picked up _JAVA_OPTIONS: -Xmx512M
Storage Resource Manager (SRM) Client version 2.1.5-16
Tue Oct 30 09:24:36 CET 2012: In SRMClient ExpectedName: host
Tue Oct 30 09:24:36 CET 2012: SRMClient(https,srm/managerv2,true)
SRMClieldapsearch -LLL -h tbn18.nikhef.nl -p 2170 -x -b mds-vo-name=resource,o=grid '(&(objectClass=GlueSA)(GlueSAAccessControlBaseRule=VO:dteam))' GlueSATotalOnlineSize GlueSAUsedOnlineSizentV2 : user credentials are: /O=dutchgrid/O=users/O=egi/CN=Karolis Eigelis
SRMClientV2 : connecting to srm at httpg://tbn18.nikhef.nl:8446/srm/managerv2
SRMClientV2 : srmPrepareToPut , contacting service httpg://tbn18.nikhef.nl:8446/srm/managerv2
copy_jobs is empty
Tue Oct 30 09:24:39 CET 2012:  srm returned requestToken = bd7521b6-65ab-4c21-a301-9c484ef81098
Tue Oct 30 09:24:39 CET 2012: sleeping 5 seconds ...
SRMClientV2 : srmStatusOfPutRequest , contacting service httpg://tbn18.nikhef.nl:8446/srm/managerv2
Tue Oct 30 09:24:44 CET 2012: no more pending transfers, breaking the loop
copy_jobs is not empty
copying CopyJob, source = file:///100M.rand destination = gsiftp://hooiwagen.nikhef.nl/hooiwagen.nikhef.nl:/export/data/dteam/dteam/2012-10-30/100M.rand.160938141.0
GridftpClient: memory buffer size is set to 131072
GridftpClient: connecting to hooiwagen.nikhef.nl on port 2811
GridftpClient: gridFTPClient tcp buffer size is set to 1048576
GridftpClient: gridFTPWrite started, source file is java.io.RandomAccessFile@74bfed5a destination path is hooiwagen.nikhef.nl:/export/data/dteam/dteam/2012-10-30/100M.rand.160938141.0
GridftpClient: gridFTPWrite started, destination path is hooiwagen.nikhef.nl:/export/data/dteam/dteam/2012-10-30/100M.rand.160938141.0
GridftpClient: set local data channel authentication mode to None
GridftpClient: parallelism: 10
GridftpClient: waiting for completion of transfer
GridftpClient: starting a transfer to hooiwagen.nikhef.nl:/export/data/dteam/dteam/2012-10-30/100M.rand.160938141.0
GridftpClient: DiskDataSink.close() called
GridftpClient: gridFTPWrite() wrote 104857600bytes
GridftpClient: closing client : org.globus.ftp.GridFTPClient@3b5b123b
GridftpClient: closed client
execution of CopyJob, source = file:///100M.rand destination = gsiftp://hooiwagen.nikhef.nl/hooiwagen.nikhef.nl:/export/data/dteam/dteam/2012-10-30/100M.rand.160938141.0 completed
SRMClientV2 : srmPutDone , contacting service httpg://tbn18.nikhef.nl:8446/srm/managerv2
srmPutDone status code=SRM_SUCCESS
copy_jobs is empty
stopping copier
</pre>
 
Note: In the log above we see that in fact the real SE endpoint is "hooiwagen.nikhef.nl", which is not advertized in BDII, but pre-configured inside SRM WS.
 
7) Listing file via GO Web and deleting the file via GO Web.
 
<pre>
-bash-3.2$ srmls -2 srm://tbn18.nikhef.nl:8446/dpm/nikhef.nl/home/dteam/100M.rand
Picked up _JAVA_OPTIONS: -Xmx512M
  104857600 /dpm/nikhef.nl/home/dteam/100M.rand
 
-bash-3.2$ srmls -2 srm://tbn18.nikhef.nl:8446/dpm/nikhef.nl/home/dteam/100M.rand
Picked up _JAVA_OPTIONS: -Xmx512M
Tue Oct 30 09:32:12 CET 2012: Return status:
- Status code:  SRM_FAILURE
- Explanation:  null
SRM_INVALID_PATH  File/directory 0 /dpm/nikhef.nl/home/dteam/100M.rand does not exist.
</pre>
 
8) Uploading file from GO Web to SE endpoint, listing with SRM client and deleting with SRM:
 
<pre>
-bash-3.2$ srmls -2 srm://tbn18.nikhef.nl:8446/dpm/nikhef.nl/home/dteam/1G.rand
Picked up _JAVA_OPTIONS: -Xmx512M
  1048576000 /dpm/nikhef.nl/home/dteam/1G.rand
 
-bash-3.2$ srmrm -2 srm://tbn18.nikhef.nl:8446/dpm/nikhef.nl/home/dteam/1G.rand
Picked up _JAVA_OPTIONS: -Xmx512M
-bash-3.2$
</pre>
 
9) Uploading 5GB size file from laptop to SE using GO Web and checking if BDII is reporting space correctly.
 
Before upload:
<pre>
-bash-3.2$ ldapsearch -LLL -h tbn18.nikhef.nl -p 2170 -x -b mds-vo-name=resource,o=grid '(&(objectClass=GlueSA)(GlueSAAccessControlBaseRule=VO:dteam))' GlueSATotalOnlineSize GlueSAUsedOnlineSize
dn: GlueSALocalID=test:replica:online,GlueSEUniqueID=tbn18.nikhef.nl,Mds-Vo-na
me=resource,o=grid
GlueSATotalOnlineSize: 32
GlueSAUsedOnlineSize: 4
</pre>
 
Listing file with SRM client:
<pre>
-bash-3.2$ srmls -2 srm://tbn18.nikhef.nl:8446/dpm/nikhef.nl/home/dteam/karolisPicked up _JAVA_OPTIONS: -Xmx512M
  0 /dpm/nikhef.nl/home/dteam/karolis/
      5242880000 /dpm/nikhef.nl/home/dteam/karolis/5G.rand
</pre>
 
After upload:
<pre>
-bash-3.2$ ldapsearch -LLL -h tbn18.nikhef.nl -p 2170 -x -b mds-vo-name=resource,o=grid '(&(objectClass=GlueSA)(GlueSAAccessControlBaseRule=VO:dteam))' GlueSATotalOnlineSize GlueSAUsedOnlineSize
dn: GlueSALocalID=test:replica:online,GlueSEUniqueID=tbn18.nikhef.nl,Mds-Vo-na
me=resource,o=grid
GlueSATotalOnlineSize: 32
GlueSAUsedOnlineSize: 9
</pre>
 
10) Making transfer from Nikhef DPM to SARA dCache using GO Web and listing file using SRM on dCache:
 
<pre>
-bash-3.2$ srmls -2 srm://srm.grid.sara.nl:8443/pnfs/grid.sara.nl/data/dteam/karolis
Picked up _JAVA_OPTIONS: -Xmx512M
  512 /pnfs/grid.sara.nl/data/dteam/karolis/
      5242880000 /pnfs/grid.sara.nl/data/dteam/karolis/5G.rand
 
</pre>
 
And notification by email was received:
 
<pre>
=== Task Deta-bash-3.2$ srmls -2 srm://srm.grid.sara.nl:8443/pnfs/grid.sara.nl/data/dteam/karolis
Picked up _JAVA_OPTIONS: -Xmx512M
  512 /pnfs/grid.sara.nl/data/dteam/karolis/
      5242880000 /pnfs/grid.sara.nl/data/dteam/karolis/5G.rand
ils ===
Task ID              : 429d16a4-2278-11e2-bf56-1231380b8963
Task Type            : TRANSFER
Parent Task ID      : n/a
Status              : SUCCEEDED
Request Time        : 2012-10-30 09:57:48Z
Deadline            : 2012-10-31 09:57:48Z
Completion Time      : 2012-10-30 09:58:56Z
Total Tasks          : 1
Tasks Successful    : 1
Tasks Expired        : 0
Tasks Canceled      : 0
Tasks Failed        : 0
Tasks Pending        : 0
Tasks Retrying      : 0
Command              : API 0.10 eu
Label                : from NIKHEF DPM to SARA dCache
Sync Level          : n/a
Data Encryption      : No
Checksum Verification: No
Delete              : No
Files                : 1
Files Skipped        : 0
Directories          : 0
Bytes Transferred    : 5242880000
Bytes Checksummed    : 0
MBits/sec            : 626.016
Faults              : 0
</pre>

Revision as of 14:48, 7 November 2012

The Globus Online service can be used with GridFTP servers of EGI that are registered in the GOCDB system. Using Globus Online with SRM services may cause damage to these storages and therefore is not recommended. If your EGI Virtual Organisation would like to use the Globus Online service, then the VO should request from its resource providers the setup of GridFTP servers that are registered in the EGI GOCDB. EGI.eu is in discussion with the DMP community about defining a safe configuration for DPM SRM servers that would allow the mixed use of DPM storages with SRM and Globus Online. For further information please email the EGI.eu User Community Support Team: ucst@egi.eu