On Thu, Dec 10, 2009 at 07:54:55PM -0500, Daniel Ouellet wrote:
> 1. use of dd across servers.
> 2. use dd or the like to increase disk size with same content in the end.
>
> ==================
>
> 1. I am trying to see if I can mirror raw disks across servers [like]
> dd if=/dev/rsd0c of=/dev/rwd1c bs=1m
dd is a bit simplistic. rsync would be rather useful here, to keep a
mirror up-to-date. This probably works best on filesystems, not raw
drivers, but should work in either case.
rsync is well-known, trusted, and works over ssh.
> 2. (...) I also [want] to replace with bigger drives now (...) on
> Solaris with plenty of hard and symbolic links and on system that
> include installations of software at the company that run proprietary
> software and really do not provide details sadly. So far I always take
> care of drives that may be flaky by simply booting an OpenBSD live CD
> and use DD to mirror the SCSI drive in it, remove the old, put the new
> one in and be done with it. I do that to keep drive in best shape and
> be sure it doesn't crash on me. Or provide me better chance not to
> anyway.
dd can be used to copy data. Thereafter, you could, for instance, extend
the last partition and the filesystem on it. Of course, this is
system-specific and I don't really know a lot about Solaris.
Joachim
