Moving hardlinks

[Tobias Speckbacher]

Without having tested this, a good guestimate.

The hard links should be copied as the entire file, since a hard link is
just a pointer to the inode of the original file.

Since it is a pointer to an inode hard links are filesystem structure
dependent.  The inode dependence is also the reason you can not hard
link across filsystems.

Hope this answers that question.

To copy all the data I would do something like:

tar cfp - /path/to/files | (cd /path/to/where/you/want/files; tar xvfp
-)

-T

-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Ashley M. Kirchner
Sent: Friday, April 30, 2004 2:06 PM
To: General Red Hat Linux discussion list
Subject: Moving hardlinks


    I have a backup drive that I'm trying to replace with a larger one 
and I need to transfer what's on it now to the new drive.  The data was 
backed up using RSYNC, and some of the data's hardlinked (through cp 
-al) and I'd like to preserve all of that.  Do I simply run 'cp -aR 
<source> <dest>' and hope for the best?  I mean, will the hardlinks 
transfer over, and will the timestamps will be the same?

    The current structure is:

    daily.05
    daily.04
    daily.03
    daily.02  <-- this is a 'cp -al' version of daily.01
    daily.01  <-- data gets RSYNCed in here

    And every night that structure gets pushed up (.05 deleted, .02 to 
.04 shifted up, .02 gets created by cp -al .01, and then rsync runs on
.01)

    I need this structure, and the linking, to stay as is when I 
transfer the data from one drive to the other.

-- 
W | I haven't lost my mind; it's backed up on tape somewhere.
  +--------------------------------------------------------------------
  Ashley M. Kirchner <mailto:ashley at pcraft.com>   .   303.442.6410 x130
  IT Director / SysAdmin / WebSmith             .     800.441.3873 x130
  Photo Craft Laboratories, Inc.            .     3550 Arapahoe Ave. #6
  http://www.pcraft.com ..... .  .    .       Boulder, CO 80303, U.S.A.




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