Re: ZFS PANIC: HELP.

On Sun, Feb 27, 2022 at 01:16:44PM -0600, Larry Rosenman wrote:
> On 02/26/2022 11:08 am, Larry Rosenman wrote:
> > On 02/26/2022 10:57 am, Larry Rosenman wrote:
> >> On 02/26/2022 10:37 am, Juraj Lutter wrote:
> >>>> On 26 Feb 2022, at 03:03, Larry Rosenman <ler@lerctr.org> wrote:
> >>>> I'm running this script:
> >>>> #!/bin/sh
> >>>> for i in $(zfs list -H | awk '{print $1}')
> >>>> do
> >>>>   FS=$1
> >>>>   FN=$(echo ${FS} | sed -e s@/@_@g)
> >>>>   sudo zfs send -vecLep ${FS}@REPAIR_SNAP | ssh 
> >>>> ler@freenas.lerctr.org cat - \> $FN
> >>>> done
> >>>> 
> >>>> 
> >>>> 
> >>> I’d put, like:
> >>> 
> >>> echo ${FS}
> >>> 
> >>> before “sudo zfs send”, to get at least a bit of a clue on where it 
> >>> can get to.
> >>> 
> >>> otis
> >>> 
> >>> 
> >>> —
> >>> Juraj Lutter
> >>> otis@FreeBSD.org
> >> I just looked at the destination to see where it died (it did!) and I
> >> bectl destroy'd the
> >> BE that crashed it, and am running a new scrub -- we'll see whether
> >> that was sufficient.
> >> 
> >> Thanks, all!
> > Well, it was NOT sufficient.... More zfs export fun to come :(
> 
> I was able to export the rest of the datasets, and re-install 14-CURRENT 
> from a recent snapshot, and restore the datasets I care about.
> 
> I'm now seeing:
> mfi0: IOCTL 0x40086481 not handled
> mfi0: IOCTL 0x40086481 not handled
> mfi0: IOCTL 0x40086481 not handled
> mfi0: IOCTL 0x40086481 not handled
> pid 48 (zpool), jid 0, uid 0: exited on signal 6
> mfi0: IOCTL 0x40086481 not handled
> mfi0: IOCTL 0x40086481 not handled
> mfi0: IOCTL 0x40086481 not handled
> mfi0: IOCTL 0x40086481 not handled
> pid 54 (zpool), jid 0, uid 0: exited on signal 6
> 
> On boot.  Ideas?

That ioctl is DIOCGMEDIASIZE, i.e., something is asking /dev/mfi0, the
controller device node, about the size of a disk.  Presumably this is
the result of some kind of misconfiguration somewhere, and /dev/mfid0
was meant instead.