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Re: Working ZFS RAID/SAS controller support/mpii



On 7/15/20 6:44 AM, Peter Kay wrote:
On Wed, 15 Jul 2020 at 09:59, Sad Clouds <cryintothebluesky%gmail.com@localhost> wrote:
On Wed, 15 Jul 2020 00:20:33 +0100
Peter Kay <syllopsium%syllopsium.co.uk@localhost> wrote:

Configuration : Boot drive on SATA, other drives on LSI 3008 8i SAS in
JBOD, boot ROM disabled. The mpii driver gets very upset (causes a
kernel panic on boot, even though the boot drive is on SATA [1]) if
some of the drive bays aren't occupied, throws unhappy messages about
drives disappearing from bays, and generally doesn't provide any
confidence that I could ever remove a drive from a running system and
have it work.
So the issue only happens when you remove drives from a live system? If
that's the case, the obvious workaround would be to power off the
system and then replace faulty drive.
No, it also causes a problem if the system is booted up from cold with
drives missing/in a different order than before (the boot drive still
being in the same location). It'd be nice to have the ability to hot
swap, but if it was a cold boot only issue for failed drives that
would be ok.

There is LSI binary Linux command line tool (MegaCli64), so I imagine
you could offline/online individual disks, but you'd need Linux
emulation packages setup on NetBSD.
Interesting, thank you.

There's also a FreeBSD version of the utility:

https://www.freebsd.org/cgi/man.cgi?query=mfiutil&sektion=8

I'd think the FreeBSD version of the utility would work better given that FreeBSD and NetBSD are similar.

--
Thanks,

*Jason Mitchell*


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