Best procedure for full backup of live system
nlandys at gmail.com
Fri Oct 16 00:42:02 UTC 2009
Thanks for your help guys. I have decided to attempt the following.
With a filesystem snapshot, take a dump 0 of all filesystems. Back up
these dumps to a 500GB disk I have sitting at home (the server I'm
backing up is in a data center). Perform this maybe once a week or
once a month.
I am now looking at this:
For step 1, I'm a little unsure what they are talking about. I assume
that to begin with I would do this:
> bsdlabel ad4s1
Since that is my disk and it has one partition.
I would probably also want to do this:
> dd if=/dev/ad4 of=MBR_backup bs=512 count=1
to back up the MBR, so I can recontruct the boot program and partition
table. But they don't mention that in the Handbook.
Then it says to back up /etc/fstab, but I'm not quite sure how I'd use
this in a restore.
Lastly, it says save all boot messages. Do they mean the output of
dmesg? Why is this useful?
Of course I would complement all of these things with the actual dump
0 of all sectors on the primary partition of the single hard drive
that I have.
My server should boot fine with the FreeBSD CDROM (fixit), because it
uses a subset of the GENERIC kernel device drivers. So I probably
don't need to pay attention to the instuctions talking about floppies.
Am I correct in all of this?
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