No..it uses the builtin loopback/localhost IP pipe.
Im not sure if theyve improved it, but IP performance over that used to be abysmal compared to GigE.
-----Original Message----- From: Jeffrey.Burton@abbott.com [mailto:Jeffrey.Burton@abbott.com] Sent: Thursday, March 13, 2003 3:39 PM To: Art Hebert Cc: Jim Davis; toasters@mathworks.com Subject: RE: Moving files but not .snapshots?
I don't know if the network card is in the path of an internal copy, but I'm fairly certain it does not. I copied 400M internally on my F880C in just under 2 minutes. I'm sure it depends heavily on the amount of fragmentation on the source's file system (my wafl scan measure_layout was 1.13, which is almost perfect). For some reason I can't find the ndmp throttle (to limit the CPU usage of ndmpcopy), I'm guessing that option does not exist, too bad. Below copied from NOW at: http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs2471&resou... Thanks, Jeff
======================================== Beginning with Data ONTAP 6.2, ndmpcopy is built into the filer and does not require a seperate host to migrate data. See your respective Data ONTAP Data Protection Guide for more details: http://now.netapp.com/NOW/knowledge/docs/ontap/ontap_index.shtml
Complete the following steps: 1. Obtain a current version of ndmpcopy from http://www.ndmp.org. 2. Install ndmpcopy on a host that has network access to the source and destination filers. 3. On both filers, enable NDMPD: a. Enter ndmpd on b. To confirm NDMP is running, enter ndmpd status. 4. Establish a "trust" relationship between the client and filer. a. Enter the hostname or interface name , i.e. , of the client and the destination filer in the source filer's /etc/hosts.equiv file. See the hosts.equiv manual page for additional options. 5. Execute the ndmpcopy on the client. The general syntax is ndmpcopy source destination Refer to ndmpcopy documentation for additional options.
For other ways to migrate data, see the following: http://www.netapp.com/tech_library/3018.html ========================================
Art Hebert art@arzoon.com
03/13/2003 04:55 PM
To: "'Jeffrey.Burton@abbott.com'" Jeffrey.Burton@abbott.com, Jim Davis jdavis@cs.arizona.edu cc: toasters@mathworks.com Subject: RE: Moving files but not .snapshots?
I take it when copying files using ndmpcopy on a single source and destination filer the data never uses the network. This seems like it should be a lot faster, anybody have an idea how much faster? Also, which release was the first with ndmpcopy on board? Is there any other ways to copy just on the filer itself beside ndmpcopy?
thanks
art
-----Original Message----- From: Jeffrey.Burton@abbott.com [mailto:Jeffrey.Burton@abbott.com] Sent: Thursday, March 13, 2003 12:19 PM To: Jim Davis Cc: toasters@mathworks.com Subject: Re: Moving files but not .snapshots?
You can use ndmpcopy from the filerhead CLI, granted you have a new enough DOT version. This creates a snapshot then copy's all the data and ACL's from source to target. First make sure that the ndmp option is turned on: ndmpd.enable on
Then below will work: ndmpcopy /vol/sourcevol /vol/destvol
You can copy at any level, not just the vol level. If the source and dest's vols are on a seperate filer just preceed the dir with "filename:" so "ndmpcopy sourcefiler:/vol/sourcevol destfiler:/vol/destvol". After the copy you can remove the temp file created at the destination end which is used for incremental updates (I forgot the name but it will be a huge file with an obviously generated name). Man page and NOW has good ndmp info. Thanks, Jeff
Jim Davis jdavis@cs.arizona.edu Sent by: owner-toasters@mathworks.com
03/13/2003 01:47 PM
To: toasters@mathworks.com cc: Subject: Moving files but not .snapshots?
I want to move two big directories from an old volume to a new volume, but just the files -- not the snapshot subdirectories. So far I've tried
find . -type d -name '.snapshot' -prune -o -print | cpio -pdm /newvol
from the adminhost, which works but isn't blazingly fast. Are there any other ways people can suggest?
loopback interface is also used by volcopy, but volcopy seemed to be still limited to 100Mb/s ndmpcopy should be optimized as compared to volcopy as it can give better throughtput than 100Mb/s
Mohler, Jeff wrote:
No..it uses the builtin loopback/localhost IP pipe.
Im not sure if theyve improved it, but IP performance over that used to be abysmal compared to GigE.
-----Original Message----- *From:* Jeffrey.Burton@abbott.com [mailto:Jeffrey.Burton@abbott.com] *Sent:* Thursday, March 13, 2003 3:39 PM *To:* Art Hebert *Cc:* Jim Davis; toasters@mathworks.com *Subject:* RE: Moving files but not .snapshots? I don't know if the network card is in the path of an internal copy, but I'm fairly certain it does not. I copied 400M internally on my F880C in just under 2 minutes. I'm sure it depends heavily on the amount of fragmentation on the source's file system (my wafl scan measure_layout was 1.13, which is almost perfect). For some reason I can't find the ndmp throttle (to limit the CPU usage of ndmpcopy), I'm guessing that option does not exist, too bad. Below copied from NOW at: http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs2471&resource= Thanks, Jeff ======================================== Beginning with Data ONTAP 6.2, ndmpcopy is built into the filer and does not require a seperate host to migrate data. See your respective Data ONTAP Data Protection Guide for more details: http://now.netapp.com/NOW/knowledge/docs/ontap/ontap_index.shtml Complete the following steps: 1. Obtain a current version of ndmpcopy from http://www.ndmp.org. 2. Install ndmpcopy on a host that has network access to the source and destination filers. 3. On both filers, enable NDMPD: a. Enter ndmpd on b. To confirm NDMP is running, enter ndmpd status. 4. Establish a "trust" relationship between the client and filer. a. Enter the hostname or interface name , i.e. , of the client and the destination filer in the source filer's /etc/hosts.equiv file. See the hosts.equiv manual page for additional options. 5. Execute the ndmpcopy on the client. The general syntax is ndmpcopy source destination Refer to ndmpcopy documentation for additional options. For other ways to migrate data, see the following: http://www.netapp.com/tech_library/3018.html ======================================== *Art Hebert <art@arzoon.com>* 03/13/2003 04:55 PM To: "'Jeffrey.Burton@abbott.com'" <Jeffrey.Burton@abbott.com>, Jim Davis <jdavis@cs.arizona.edu> cc: toasters@mathworks.com Subject: RE: Moving files but not .snapshots? I take it when copying files using ndmpcopy on a single source and destination filer the data never uses the network. This seems like it should be a lot faster, anybody have an idea how much faster? Also, which release was the first with ndmpcopy on board? Is there any other ways to copy just on the filer itself beside ndmpcopy? thanks art -----Original Message-----* From:* Jeffrey.Burton@abbott.com [mailto:Jeffrey.Burton@abbott.com]* Sent:* Thursday, March 13, 2003 12:19 PM* To:* Jim Davis* Cc:* toasters@mathworks.com* Subject:* Re: Moving files but not .snapshots? You can use ndmpcopy from the filerhead CLI, granted you have a new enough DOT version. This creates a snapshot then copy's all the data and ACL's from source to target. First make sure that the ndmp option is turned on: ndmpd.enable on Then below will work: ndmpcopy /vol/sourcevol /vol/destvol You can copy at any level, not just the vol level. If the source and dest's vols are on a seperate filer just preceed the dir with "filename:" so "ndmpcopy sourcefiler:/vol/sourcevol destfiler:/vol/destvol". After the copy you can remove the temp file created at the destination end which is used for incremental updates (I forgot the name but it will be a huge file with an obviously generated name). Man page and NOW has good ndmp info. Thanks, Jeff *Jim Davis <jdavis@cs.arizona.edu>* Sent by: owner-toasters@mathworks.com 03/13/2003 01:47 PM To: toasters@mathworks.com cc: Subject: Moving files but not .snapshots? I want to move two big directories from an old volume to a new volume, but just the files -- not the snapshot subdirectories. So far I've tried find . -type d -name '.snapshot' -prune -o -print | cpio -pdm /newvol from the adminhost, which works but isn't blazingly fast. Are there any other ways people can suggest?
-
Mohler, Jeff -
Stephane Bentebba