Hi Luke,

I wonder if it is the HBA. We had issues with Solaris and LSI HBAs
back when we were using an Xserve RAID.

Haven't had any of the issues you're describing between our LSI array
and the Qlogic HBAs we're using now.

If you have another type of HBA I'd try it. MPXIO and ZFS haven't ever
caused what you're seeing for us.

-J

On 12/7/06, Luke Schwab <[EMAIL PROTECTED]> wrote:
Jason,
 I am no longer looking at not using STMS multipathing because without STMS you 
loose the binding to the array and I loose all transmissions between the server 
and array. The binding does come back after a few minutes but this is not 
acceptable in our environment.

Load times vary depending on my configuration.

Senario 1: No STMS: Really fast zpool create and zpool import/export. Less then 
1 second for create/export and 5-15 seconds for an import.

Senario 2:STMS(mpxio)enabled and no blacks being used to LUN masking: zpool 
create takes 5-15 seconds, zpool imports take from 5-7 minutes.

Senario 3: STMS enabled and blacklists enabled via /kernel/drv/fp.conf: It look at least 
15 minutes to do a "zpool create" before I finially stopped it. This does not 
appear to be a viable solution.

If you have any ideas about how to improve performance I am all ears. I'm not 
sure why ZFS takes so long to create pools with STMS?

Does anyone have problems using LSI arrays. I already had problems using my LSI 
HBA with ZFS because the LSI HBA does not work with the Leadville stack.

R/ ljs


> Hi Luke,
>
> That's terrific!
>
> You know you might be able to tell ZFS which disks
> to look at. I'm not
> sure. It would be interesting, if anyone with a
> Thumper could comment
> on whether or not they see the import time issue.
> What are your load
> times now with MPXIO?
>
> Best Regards,
> Jason
>


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