On 8/31/2013 1:30 AM, Yann Rouillard wrote:
Hi Harry,
I don't know it is the case here, but often a difference of size after
cp or rsync is caused by hardlinks not being preserved.
Try to add the -H option to rsync to see if that changes something.
I would have thought that any change in size due to
not preserving hard links would be to increase the
total data size, but Mr Putnam said that the total size
decreased. The answer must be elsewhere.
-- Guy Shaw
Yann
2013/8/31 Laurent Blume <[email protected] <mailto:[email protected]>>
On 2013-08-29 10:17 PM, Harry Putnam wrote:
> Running Openindiana (solaris branch) and using some csw tools too.
>
> csw stuff is installed at /opt/csw. Since my root pool space is
> shrinking I thought I might move all of /opt off on a different zpool
> on a different disc. Then just put a symlink in place at /opt.
Using a symlink is a terrible idea, and furthermore - why? You can just
set your new dataset mountpoint to be /opt.
To be clear: if you use symlinks, updates expecting it to be a directory
can just remove the symlink and recreate as an empty directory. This was
particularly true in S10; on IPS, I expect that "pkg fix" would not be
happy about them either.
> I decided to do it with rsync and after rsyncing everything to
/t1/opt
> (rsync -avv /opt/ /t1/opt/ )
>
> But when I check the result with du I find a huge difference in size.
>
> the original /opt shows 355 MB but the copied opt shows only 173 MB
>
> I thing tried with copy using gnu copy and did 'cp -a' /opt/t1/
>
> Again it comes up with the big difference in size..
>
> Any ideas what could explain that?
Posting exactly what you did would help understand. Also, you can do a
"find . | sort > file" in each directory and compare the files.
Laurent
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