dan wrote:
> the problem with zfs snapshots is that you will have to be very careful
> about organizing the data. you are taking a snapshot of a live
> filesystem but what does it depend on?
If I understand the process right, you make a zfs snapshot first, so
what you send isn't from a live filesystem. Then you send that and at
the other end receive it into a snapshot that you could promote to the
filesystem if you wanted (but you don't have to).
> and when you send it to the other
> machine is that dependancy met? what if you miss sending a snapshot?
The only thing I'd expect to be a problem would be if you failed partway
through the send. But, you should be able to snapshot, receive to that,
and revert on a failure.
> The problem here is automating the process.
Someone must have done this already. If it is sent over ssh, you should
know if it completes or not.
> I have toyed with the idea
> of doing a script that would do an md5 and timestamp on each file, write
> that to a log and then do the same on the remote system. then compare
> the two systems and use rsync on each item.
I don't think you need any of that - just snapshot and retry until the
send of that snapshot succeeds.
> I am currently syncing over 240GB with rsync without issues. the sync
> takes about 1-1.5 hours with most of that time being spent making the
> file list. this does work well, you just have to be patient and avoid
> the temptation to kill rsync because you think it is dead.
I've let rsync run for days and never got the first copy completed.
--
Les Mikesell
[EMAIL PROTECTED]
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