Tino Schwarze wrote:

> On Sun, Jan 18, 2009 at 05:29:21PM -0600, Les Mikesell wrote:
> 
>> > you have x number of remote hosts, all running the same OS and
>> > presumably have almost identical files (size, permissions etc)? and you
>> > want back one up and then clone that backup for each of the other
>> > machines to avoid transfering the data numerous times?
>> > 
>> > you should add the -H flag to cp or rsync to take hardlinks with:
>> > 
>> > rsync -aH /var/lib/backuppc/pc/host1/0 /var/lib/backuppc/pc/host2/0
>> > cp -aH /var/lib/backuppc/pc/host1/0 /var/lib/backuppc/pc/host2/0
>> 
>> Since he is only copying one backup run there probably won't be any hard
>> links within the run and cp/rsync won't know or care about links to the
>> pool.  What you really need here is to make a tree of hardlinks instead
>> of a copy but I don't think any standard tools do that.
> 
>> cp --help
> [...]
>   -l, --link                   link files instead of copying
> 
> So a cp -rl /var/lib/backuppc/pc/host1/0 /var/lib/backuppc/pc/host2/0
> should do the trick.
> 
> Then you can trigger a full backup - the rsync will only transfer
> changed files.
> 
>> But, you are going to remove the extra copy as soon as a new full run
>> completes so the space probably doesn't matter. The only place I think
>> it might go wrong is if backuppc hard-links matching files in the next
>> run to the copy from the previous instead of the hash match in the
>> pool.  If that's the case you will end up with files that persist
>> under each PC's directories but never end up linked to the pool and
>> thus to each other.
> 
> The base backup host1/0 should be complete (e.g. BackupPC_link should
> have been run).
> 
> HTH,
> 
> Tino.
> 
That didn't seems to work, The files have different inode numbers:
FileServer:~# ls -li /var/lib/backuppc/pc/vista-test/0/fC
 4644195 -rw-r-----  3 backuppc backuppc  144 2009-01-22 07:55 attrib
 4661809 drwxr-x--- 26 backuppc backuppc 4096 2009-01-22 06:53 fBoot
16778620 -rw-r-----  4 backuppc backuppc 2752 2008-12-26 09:21 fBOOTSECT.BAK
 4840358 drwxr-x---  2 backuppc backuppc 4096 2009-01-22 06:53 fConfig.Msi
 4840370 drwxr-x--- 11 backuppc backuppc 4096 2009-01-22 07:43 fDocuments
and Settings
 4825126 drwxr-x---  3 backuppc backuppc 4096 2009-01-22 07:55 fDokumente
und Einstellungen

FileServer:~# ls -li /var/lib/backuppc/pc/vistabase/0/fC
 4644195 -rw-r-----  3 backuppc backuppc  144 2009-01-22 07:55 attrib
17202565 drwxr-x--- 26 backuppc backuppc 4096 2009-01-26 22:39 fBoot
16778620 -rw-r-----  4 backuppc backuppc 2752 2008-12-26 09:21 fBOOTSECT.BAK
17202564 drwxr-x---  2 backuppc backuppc 4096 2009-01-26 22:39 fConfig.Msi
 3451763 drwxr-x--- 11 backuppc backuppc 4096 2009-01-26 22:39 fDocuments
and Settings
17202590 drwxr-x---  3 backuppc backuppc 4096 2009-01-26 22:39 fDokumente
und Einstellungen

-- 
Don't Panic


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