Good Morning
I have a new challenge to solve, I am going to write a new backup disk mirroring script. The current one, whcih is useing 'dd' caused some stalled systems
Currently I am in the phase of experimenting with different methods, I was thinking about dump/restore afio/cpio or rsync.
The best solution looks like rsync for me, but what os your opinion ?
The script will run 1 time a week and has to mirror the complete OS disk to a second 'backup' disk. Only the OS FS will be backed up, no data filesystems !
The backup will run on a live system, I cannot go down to sinle user mode and/or remount the FS readonly for backing up
With 'dd' the Linux system will be forced to flush all dirty pages, which caused the stalled situation I described before. So I need a mirror method with doesn't cause a extremly high load, because the systems are high loaded anyway and is more or less fast; of course I could need hours for it, but it should be finished the next morning
Thanks for all hints !
Btw, the systems are RH AS 2.1 systems, IA64 multi processor and big RAM. The disks are default SCSI disks (36 or 72 GB), primary and backup disks have a seperate controller each. The shell is free choosable, I thought on bash.
Cheers
malcom