Date: Wed, 15 Aug 2001 00:32:06 -0600 From: Chris Fedde <chris@fedde.littleton.co.us> To: "Kory Hamzeh" <kory@avatar.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Backup suggestions Message-ID: <200108150632.f7F6W6493412@fedde.littleton.co.us> In-Reply-To: <005f01c1252f$8bd0eba0$14ce21c7@avatar.com>
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On Tue, 14 Aug 2001 19:11:08 -0700 "Kory Hamzeh" wrote:
+------------------
| Hi,
|
| I am setting up a system running 4.3-RELEASE. This system will have two IDE
| drives, each being about 30G. I would like to write a cron jobs to copy all
| of the filesystems from the first physical drive to the second one every
| night. I want to make sure the second drive is an exact duplicate of the
| first, so in case of a crash, I can make the second drive the master and
| boot off of it.
+------------------
My experiance is that these schemes don't help much. You need to
edit /etc/fstab and other files so that the system will boot as
expected anyway.
IMHO a better plan is to have /, swap, /var, and /usr partitions
identical on both drives. Make sure the system normaly uses both
swap partitions. make / as small as is reasonable (say 100meg)
make /usr no larger than it realy needs to be (say 5G) Install your
"running" operating system onto /, /var and /usr of drive one.
install your "recovery" operating system onto drive 2. Make a
/disk directory and mount the remaining disk on both drives as /disk/1 and
/disk/2 on the "running" disk. Make liberal use of symbolic links
to balance /home and other directories over the /disk/1 and /disk/2
partitions.
Use dump to write dumpfiles of the "running" partitions to /disk/2/backups
Use tar (or pax) to backup home directories and other precious data
to /disk/[12]/user_backup. Use newsyslog to keep a few old copies
of backup data. Use scp or sync to copy the backup directories to
a second computer.
Test your backups periodicaly. Test boot your "recovery" operating
system periodicaly.
Good Luck
--
Chris Fedde
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