rsync - Apr 2003 - WARNING: rsync mirror is erased when remote HD-dies

Hello,

I faced a problem with rsync-ing like this

server blue 3-HD's as Linux Sofware-RAID 0 (striping) - Webserver EXT3
server green 3-HD's as Linux Sofware-RAID 0 (striping) - Backupserver EXT3

During the rsync-2.4.6-13 process one of the HD's on blue died. Though
rsync decided to remove the mirrored directories from green (the
backup-server).
This process resulted in a partial loss of Data. (With an 120 GB mirror no
further Backup exists)
Any suggestions to avoid that?

ANYWAYS: BE CAREFUL

bye willi moser

wilhelm.moser@demos.at

Hello,

this is the excerpt from the rsync_backup.sh

# OK the filesystems should be mounted
# lets start the rsync process
rsync -arlpogtDvx --delete --force /mnt/nfs_mirror_src /mnt/nfs_mirror_dest

Thank you for help or comments


bye willi moser

wilhelm.moser@demos.at

On Sat, Apr 05, 2003 at 12:10:41PM +0200, wilhelm.moser@demos.at
wrote:
> Hello,
> 
> I faced a problem with rsync-ing like this
> 
> server blue 3-HD's as Linux Sofware-RAID 0 (striping) - Webserver EXT3
> server green 3-HD's as Linux Sofware-RAID 0 (striping) - Backupserver
EXT3
> 
> During the rsync-2.4.6-13 process one of the HD's on blue died. Though
> rsync decided to remove the mirrored directories from green (the
> backup-server).
> This process resulted in a partial loss of Data. (With an 120 GB mirror no
> further Backup exists)
> Any suggestions to avoid that?
First, don't have just one backup copy.  Second, use a RAID
type that provides redundancy to survive a disk dying.
Third, if you won't have multiple backup trees you could use
the --max-delete option.  Finally, you might want to upgrade
although that in itself wouldn't avoid the problem of
syncing from an absent disk.

-- 
________________________________________________________________
	J.W. Schultz            Pegasystems Technologies
	email address:		jw@pegasys.ws

		Remember Cernan and Schmitt