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

On Thu, Jun 26, 2025 at 11:58:28AM -0400, Alexander Motin wrote:

>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.

In iLo (the machine is a hp proliant gen8) in storage information in 
the physical view (where all the individual disks can be seen) the 
status of the disk is 'ok' (all green) and drive configuration is 
'unconfigured' for all disks. There's a hp tool I need to run if I need to
set HPA mode again. I won't do that just yet though because there's
data I'd need to back up as the mode changing process erases
all data.

But as you say, this one disk might be in smart array mode, given as you,
I think mean that all the other disks are seen as raw devices and it's 
just this one that can only be seen with the cciss,7 in smartmontools.

I don't understand why it was working before though, unless uncontrolled
power outage upset the card, or disk, or both.
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