Re: device in raidz2 array only partially recognised by the OS

On 6/26/25 11:43, void wrote:
> Yeah, it's been cold-booted and unplugged. It's in a slotted array and 
> connected to
> a HP P440 card in HBA (JBOD) mode, so not much in the way of cables.
> 
> What *is* unusual is this disk is SAS the others are SATA.
> Although in *theory* these can be mixed, I'm unsure of whether
> they can be mixed on the *same card* without encountering
> "unexpected behaviour". Like smartmontools seeing the drive
> but not the cam subsystem.
> 
> It worked well for a time, then the power outage happened, then the UPS 
> was exhausted, then on cold boot the disk dropped out of the array. Now 
> it doesn't work for zfs/cam but it does for smartmontools.
> 
> next thing to try is see if da7 is seen when booting the latest 
> snapshot. If not, try booting to a different os

Your card is a RAID at its heart, even if you say it pretends to be HBA 
to some degree.  You should start from logging into its configuration 
interface and checking what it thinks about the drive.  I guess the card 
may consider the drive faulty, or it may forget that it is a JBOD, or 
decide it is a part of some RAID array.  In either of those cases it may 
wish hide the drive from OS.  smartmontools, the way you call it, 
accesses the drive via card's pass-through interface, designed to 
monitor health of drives hidden from OS as being a part of RAID array.

-- 
Alexander Motin