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FreeBSD backup/mirror

Posted on 2004-03-22
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Last Modified: 2013-12-09
Can someone show me how to :
- make a complete mirror of my freebsd box to another freebsd box (kind of moving HDD) over LAN (highspeed)

Thanks
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Question by:hqtrung
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8 Comments
 
LVL 62

Expert Comment

by:gheist
ID: 10653269
Please tell me version of your FreeBSD system i.e. output of "uname -a"
And whether you want to do copy on working system or shut down before copy...

Solutions are very long&different.
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Author Comment

by:hqtrung
ID: 10653314
its' FreeBSD 5.2. I think it should be on working system because I can't open the case or put another HDD into system.
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LVL 62

Accepted Solution

by:
gheist earned 200 total points
ID: 10653549
there is mksnap_ffs utility, which makes a historical static picture of disk for better backups in file in same filesystem.
Open files may be damaged.
Then you can use
dd if=/your/snapshot ibs=1m obs=1k | ssh you@newhost dd of=/dev/rxd0e ibs=1k obs=1m
to transfer data across network.
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Author Comment

by:hqtrung
ID: 10653610
what is dev/rxd0e ?
Thanks for your comment. I will try on my system and reply soon.
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LVL 62

Expert Comment

by:gheist
ID: 10655320
rad0e or rda0e or so, the raw partitions of same size on target system.
0
 

Expert Comment

by:rkuebert
ID: 10811382
Did you ever read the FreeBSD Handbook?

Chapter 12 (Storage) deals also with backup problems.

See Point 12.10 (Backup Basics) here:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/backup-basics.html

Regards,

Roland
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