Ironman:

great suggestion, can i use fs_copy if my file systems are different size, my target filesystem is bigger than my source fs. I just looked at fs_copy man pages and it says that "fs_copy creates a complete or differential copy of a file system on the specified Celerra Network Server" . It sounds like it create a chkpt on its own? or do i need to use an existing chkpt ? What is loopback replication ? Since it's on the same Celerra box i dont' need to specify my source and destination ip address.

Thank you

so I take it its a block level copy vs file level ?

thank you

Thank you very much for giving me this sugguestion ..i will use it in the near future.

If the filesystems are not the same size, you can use the server_archive command to copy from one FS to another in the same datamover.

Chris,

what would the syntax be?

something like:

server_archive server_3 -r -w /source_fs /destination_fs

Will it preserve NTFS/Quota settings?

Thanks

That is the correct syntax. man server_archive is good also.

It will not preserve NTFS/CIFS permissions. You will have to reset all the permissions once you are done copying. Its just a quick and dirty way to copy data internally.

Good luck

If you like to live life on the edge, here's a script to use server_archive to copy from one file system into a new file system of a smaller size. In essence you shrink the file system.


Syntax is-----> shrink_fs oldfs 500M

this would "shrink" a file system named oldfs to 500M from the previous
size.

Here's the code - just paste into vi and save as shrink_fs

### command line argument - shrink_fs name Size $1= name $2=new size in
M - for example 50M

####Create New file system
nas_fs -name fsprod_new -type uxfs -create size=$2 pool=id=12
storage=SINGLE worm=off -option slice=y,mover=server_2
server_mountpoint server_2 -create /fsprod_new
server_mount server_2 -option rw fsprod_new /fsprod_new


##Execute copy command - takes time to copy data
server_archive server_2 -r -w /$1 /fsprod_new

##### Pause here ##### this starts the swap

##unmount file systems - takes seconds
server_umount server_2 -perm $1
server_umount server_2 -perm fsprod_new

###rename new fs to old - takes seconds
nas_fs -rename $1 fsprod_old
nas_fs -rename fsprod_new $1

##mount file system to dm
server_mount server_2 $1 /$1


#######Pause here ##### check data before deleting the old data

###Delete Old File system
nas_fs -delete fsprod_old

###Delete fsprod_new mountpoint
server_mountpoint server_2 -delete /fsprod_new

Dan,

thank you for sharing the script, now i just need to figure out how to help my Admin preserve/restore NTFS permissions after the migration. Looks like i am going to have to reset quotas but that's not a big deal.

so if anybody cares ..i have done a few sample fs_copy copies and it works pretty good. The syntax is very simple:

fs_copy -start fs46 fs44

where fs46 is my source and fs44 is my target file systems. Both had to be mounted in read only mode and fs44 had to be a rawfs type file system. I copied 18G worth of data from ATA to FC and from FC to ATA file systems (CX600) resulting in the same number. It took 10min to do a full copy ..so that's around 28MB/s. But what i liked that most was that it retained NTFS and Tree Quota settings. That was the biggest thing as tree quotas can not be applied to an existing folder structure.

Thank you for great recommendation guys