Re: network copy, preserving hardlinks

On Thu, Feb 22, 2007 at 12:40:21PM -0500, George Georgalis wrote:
>On Thu, Feb 22, 2007 at 04:42:17PM +0000, Christos Zoulas wrote:
>>In article <[email protected]>,
>>George Georgalis <[email protected]> wrote:
>>>I have 89 hardlink based snapshots, consisting of a date named
>>>prefix directory and some 500,000 files below each prefix. no
>>>prefix is over 36GB, but through the use of hardlinks, all the
>>>snapshots combined use no more than about 38Gb.
>>>
>>>Presently they are on a linux reiserfs, and I'm trying to get them
>>>over to a NetBSD 3.1 UFS2 partition. rsync with -H, fails with
>>>not enough memory, the system has 6Gb RAM. I don't see a preserve
>>>hardlinks option with tar.
>>>
>>>is there another program that can manage the transfer?
>>
>>I think that tar preserves hard links. Another option is rdist6, but
>>it will probably crap out too.
>
>okay, I'll try tar later, for now the ulimit setting both memory
>size and locked memory to unlimited seems to have gotten me over
>the problem part.  I wasn't expecting ulimit issues as root...

in the end, rsync couldn't finish the job but tar worked.

 ssh root@remote "cd /backups && tar cf - ." | (cd /newbackups && tar xpf -)

...hardlinks preserved.

// George


-- 
George Georgalis, systems architect, administrator <IXOYE><