Rsync and Tivoli incremental backup

[lipi]

We migrated 1PiB of information from one storage to another, thus mantaining of course the mountpoint on my backup servers.

We copied the info from the old storage to the new one with rsync with -p option, to preserve timestamps, but the resolution is seconds, and milliseconds are truncated for Modify timestamp:

File: «vadd_example»
Size: 4096 Blocks: 0 IO Block: 262144 directori
Device: 17h/23d Inode: 70047319 Links: 4
Access: (2770/drwxrws---) Uid: ( 1211/ UNKNOWN) Gid: ( 1300/ UNKNOWN)
Access: 2016-02-11 00:56:52.283517690 +0100
Modify: 2015-10-13 12:51:35.000000000 +0200
Change: 2016-02-11 00:56:52.297300898 +0100


Tivoli is finding the file as changed and from "dsmc inc" is trying to create a new backup copy of every file in the filesystem. I cannot afford to backup 1 PiB more.

Is there any option to update the status of all files to a valid state without backing it up again?

Regards,

 

[marclant]

Is there any option to update the status of all files to a valid state without backing it up again?

No, because the metadata that changed is part of the file, not external to the file. So if the file or its metedata is different, it's a candidate for backup.

You could try using this technote to see what attribute is different, and find out if you can change your copy procedure to make it the same:
http://www-01.ibm.com/support/docview.wss?uid=swg21320696

Just backup a few files or a directory that was not yet processed so you can identify what is different about the file.