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cadencep45
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318 Posts
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February 9th, 2012 06:00
ndmpcopy question
I want to shrink a FS which is about 5 TB of data but is sized incorrectly. I propose to use ndmpcopy ( possibly followed by emcopy ? )
I have looked at https://community.emc.com/docs/DOC-7832 and have downloaded the binary and created the user account ( 1 because its a copy internally from one datamover on one Celerra to the same datamover).
The source and destination fs are on a vdm, so I am prepending /root_vdm_x to the fs name to ensure the path is correct.
However I seem to be stopped with a problem actually connecting to the ndmp port on the datamover. So I am connecting to server_4 ( where the fs is). I get the following error message
./ndmpcopy IP address of DM:/root_vdm_10/test_source IP address of DM:/root_vdm_10/test_dest -sa ndmpcopy:password -da ndmpcopy:password -v -v -v -v
Creating NDMP connection.
Connecting to IP address of DM.
ERROR: comm.c:415 system call (connect): Connection refused
Could not open NDMP connection to host IP address of DM.
Has any one any thoughs on how from the cs I can verify from the server_logs either an error or the it is configured correctly.
Note we are using NDMP for general backups ( but a different username ) if this is relevant.
697
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Posted February 10th, 2012 02:00
[nasadmin@Multinasdub304cs ~]$ cat /nas/server/slot_4/netd
routed
nfs start
statd
lockd
pax
rquotad action=start
ndmp port=10000
xattrp
snmpd
kerbinit
cifs start
iscsi start
its not. I am going to look at what our commvault setup connects to as this is working and should be connection to the right IP/port.
697
0
Posted February 10th, 2012 02:00
Hi,
are you missing the port number from the command :
"./ndmpcopy IP address of DM:/root_vdm_10/test_source IP address of DM:/root_vdm_10/test_dest -sa ndmpcopy:password -da ndmpcopy:password -v -v -v -v"
NDMP on DM connects to the 10000 port, as mentioned in the doc, follow this syntax :
./ndmpcopy souce_ip_address:/mountpoint/path destination_ip_address:/mountpoint/path -sa user:password -da user:password -sport 10000 -dport 10000 -level 0 -v -v -v -v
you command may look like this :
./ndmpcopy IP address of DM:/root_vdm_10/test_source IP address of DM:/root_vdm_10/test_dest -sa ndmpcopy:password -da ndmpcopy:password -sport 10000 -dport 10000 -level 0 -v -v -v -v
Please check if mentioning the port works.
Thanks,
Sameer
697
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Posted February 10th, 2012 03:00
unfortunatly no, ie
./ndmpcopy IP address of DM:/root_vdm_10/test_source IP address of DM:/root_vdm_10/test_dest -sa ndmpcopy:password -da ndmpcopy:password -sport 1000 dport 10000 -level 0 -v -v -v -v
Creating NDMP connection.
Connecting to IP address of DM
ERROR: comm.c:415 system call (connect): Connection refused
Could not open NDMP connection to host IP address of DM
it was a reasonable query. The reason I left it out is according to the documentation leaving them out makes the ports default to 10000.
Anyhow, is there any way I can either confirm from the client side the IP address/Port it is trying to connect to so I can verify on the cs that it is listening on that IP/Port pair ?
697
0
Posted February 10th, 2012 04:00
try to telnet to port 10000 , if you see gibberish on the screen ..it's listening
697
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Posted February 10th, 2012 05:00
Like so ?
# telnet IP address of DM 10000
Trying IP address of DM...
Connected to IP address of DM
Escape character is '^]'.
$O57PuTTY
Names ( IP addresses ) have been changed to protect the innocent !
I am a wee bit concerned that it is showing putty, so I want to check that this is what I should be seeing.
697
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Posted February 10th, 2012 06:00
so that was from a linux box. I figured I did not like the putty so run the same thing from a putty client. I get a blank screen and no gibberish. Off to check that NDMP is properly running. The weird thing is I suspect it is as we are using NDMP to backup fs on this datamover.
697
0
Posted February 10th, 2012 06:00
just telnet from windows command prompt ..i get his on my screen
697
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Posted February 10th, 2012 07:00
castleknock,
Please double check your syntax. In the example you provided you have the source port set as 1000 as opposed to 10000. NDMP would not be able to connect on port 1000
./ndmpcopy IP address of DM:/root_vdm_10/test_source IP address of DM:/root_vdm_10/test_dest -sa ndmpcopy:password -da ndmpcopy:password -sport 1000 dport 10000 -level 0 -v -v -v -v
Creating NDMP connection.
Connecting to IP address of DM
ERROR: comm.c:415 system call (connect): Connection refused
Could not open NDMP connection to host IP address of DM
SAMEERK1
296 Posts
697
0
Posted February 10th, 2012 01:00
Hi,
Please check this file.. if the ndmp is commented out
$ cat /nas/server/slot_x/netd
#ndmp port=10000
Thanks
Sameer