gmirror + subset of partitions gjournal'd, autosync setting?

[Jeremy Chadwick]

On Wed, Oct 29, 2008 at 11:04:37PM -0700, Carl wrote:
> Carl wrote:
>> I've built a GEOM mirror on a single slice of a single disk and am 
>> about to insert the second disk. Of the partitions in the mirror, I 
>> made only a few of them gjournal'd. I've seen it recommended that one 
>> disable autosynchronization for the mirror if using journaled 
>> filesystems.
>>
>> 1. Is that recommendation a must or a nice-to-have? What are the actual 
>> consequences of not taking that advice?
>>
>> 2. In a case like mine, the non-journaled partitions need  
>> autosychronization enabled to benefit from being mirrored, right?
>>
>> 3. Exactly how would I disable autosynchronization for the journaled  
>> partitions in the mirror, but not for the rest?
>
> Can no one help me with this question?

Are you aware of the freebsd-fs list?  freebsd-questions is mainly for
generic "How do I use ls(1)?" questions.

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |