I think about using dd instead of dump? Is this an acceptable idea?
2009/6/21 Robert Heller heller@deepsoft.com
At Sun, 21 Jun 2009 11:49:09 +0200 CentOS mailing list centos@centos.org wrote:
Hi all. I'm currently having a following problem: I have only ssh
connection
to a CentOS 5.2 system, there are two harddiscs on it. One stores the
system
(/ filesystem) and the other should be used to help restore the system in case of first disks' failure. I thought that maybe dump would be a good utility to make it. But in only works on read-only filesystems. In one
Dump works just fine on a read-write file system. There is the pretty much standard limitation (that applies to *all* backup methods) that when backing up an 'active' file system: there will always be files that will miss the backup because they were being written during the backup process.
article I've read that making a snapshot of the / filesystem (then it wouldbe read-only) and backing it could help. But aren't snapshots
limited
to logical volumes (LVM)? My friend told me to use rsync to back up the entire / filesystem to the second disk and then in case o failure the
system
from the copy should boot ok.
Could anyone provide any suggestions? I don't have physical contact with
the
machine so for example RAID 1 isn't a possible option/
Any help will be very kindly appreciated.
Make an initial dump to get the base system copied, then set up a cron job to sync the disks once a day (or more frequently) with rsync.
With regards, R.
MIME-Version: 1.0
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
-- Robert Heller -- 978-544-6933 Deepwoods Software -- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows heller@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos