Re: How do you mirror?
hi ya keith
on your mirror/destination... via cron
#
# copy stuff from teh master to this backup server
#
rync --delete master::/home /backup_dir
try it... create xxx.to_be_deleted.txt on Master and see it
get mirrored... and than delete it....
- do these tests for home.test directory...
if Master cannot mount mirror:/backup_dir than root
cannot accidently rm -rf / and remove the backup
backing xxxGb is not an issue .. across 100Mbps...
but if you are doing it across "the internet"... dont try it..
too slow and data is susceptible to be sniffed
c ya
alvin
http://www.Linux-Backup.net ... 1U Raid5 ... up to 8x 200Gb Each ...
copy machines on engineering to office-admin bldg..
copy manufacturing machines to payroll ...etc ..
put the backup in a different bldg... across a private 100Mbps ethernet
or fiber between teh bldgs if you already have it that way
On Thu, 20 Dec 2001, Keith O'Connell wrote:
> Hi,
>
> I want to mirror one disk on one machine on to another disk on another
> machine, but I am at a loss for the best way to do it. It is for backup
> purposes and I intend to have the mirroring done each morning at about
> 4am
>
> I have been using rsync, but that coppies the changes on the main disk
> onto the backup disk, but seems not to be able to remove from the backup
> anything that has been removed from the main disk, so after a period of
> time the backup disk overflows with old, unwanted stuff.
>
> I also concirered a rm -rf /<backup disk>, followed by a cp *, but that
> will take ages each night, so that is not the way to go.
>
> This must be being done all over the place in lots of locations - what
> is the right/best way to approach this?
>
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