tuning to run large (1000+) numbers of null_mounts

[David S. Madole]

From: "Ensel Sharon" <user at dhp.com>
>
> I am running over 2000 null mounts on a FreeBSD 6.0-RELEASE system.  I 
> am
> well aware of the status of the null_mount code, as advertised in the
> mount_nullfs man page:
>
> I am noticing both system instability and data corruption issues on 
> disk
> following crashes.  Both of these seem to be related to the null
> mounts.  I have two very quick questions:

For what it's worth, I have three null mounts on each of eight 
5.4-RELEASE systems that are read/write and have extensive activity and I 
have not had a single filesystem problem in 15 months of this 
configuration.

But 2000 of them? I don't know, I've never envisioned 2000 of any kind of 
mount.

David