ADSM-L

Re: Will changing JUST the INODE number result in file backup?

2001-06-13 11:40:00
Subject: Re: Will changing JUST the INODE number result in file backup?
From: Richard Sims <rbs AT BU DOT EDU>
Date: Wed, 13 Jun 2001 11:40:58 -0400
>I have a client that has a solaris box with 400gigs of data. He want to
>"rsync" the filesystem to another solaris box. Access time, owner,
>permissions will NOT change, but the inode for each file WILL change.
>
>If JUST the inode changes, will this result in TSM backing up the file?

Keith - A good question.  TSM tries to be generic where it can, and
        does not record the inode number.  It stores the file data and
file attributes.  Doing an 'rsync', or 'cp -p ...', or the like causes
the ctime attribute of the Unix file to change, while all other attributes
remain the same.  An incremental backup will then show "Updating-->" as
TSM updates the ctime-stamp info in the TSM database.
If the size of the file changes, though, the file has to be backed up
afresh.

  Richard Sims, BU
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