configuration/performance question

[Daniel P. Zepeda]

Daniel P. Zepeda wrote:

> Hello,
>
> My original problem was that I was having the problem where my mirror 
> comes
> up DEGRADED when I reboot the machine. Now, I wrote up this long post to
> describe the situation and appeal for help from those folks more 
> intimate with
> all this than I, and, on going to subscribe to the list to post this, 
> I found
> the solution on digging further in the archive. I've left the whole thing
> intact here, but I found the solution to my problem here;
>
> http://lists.freebsd.org/pipermail/freebsd-geom/2004-September/000259.html 
>
>
> But what I uncovered while having my problem is that if I shut down one
> consumer, the newer one I configured that I wanted to work, namely da1 
> on gm0,
> that an older mirror that I first configured, namely gm0s1, starts up, 
> with
> consumers that I originally set up as da1s1*  !!
>
> My question now is, I have some idea of how GEOM works from the 
> manpage, it
> seems to say that the disk data flows through a set of geoms to/from the
> kernel/disks. Will the "ghost" mirror and slices provide extra steps, and
> therefore a performance slowdown, or am I totally off base with the 
> way GEOM
> works? (Which is likely since I was only introduced to it last week). 
> That is,
> is the way it is set up now on my box Ok? It works Ok, and I can 
> reboot now
> with a COMPLETE array, but is it messed up internally? I haven't done any
> performance tests yet, so I don't know.
>
> Can anyone enlighten me on this?
>
> Here is the text of the original message. I'm leaving it here because it
> provides a lot of detail on my set up to back up my question above, 
> although
> the problem I outlined below is SOLVED and my question is above.
>
> Thanks,
> DZ
>
> ****************************************************************************************** 
>
>
>

<snip>

Oh dear, after all that I forgot to mention that the "approaches" I 
mentioned are detailed here;

http://people.freebsd.org/~rse/mirror/


AND turn off HTML email for this account.

Sorry.