Informal(?) sesX messages

[Alan Somers]

On Fri, Dec 11, 2015 at 3:34 PM,  <Mykel at mware.ca> wrote:
> Hi all, please CC me on reply as I'm not subscribed to this list.
>
> I've got one of those Supermicro 72-drive monster machines, all ZFS'd up.
> https://www.supermicro.com/products/system/4u/6048/SSG-6048R-E1CR72L.cfm
>
> And before & after replacing a faulty SAS Expander and a pair of cables
> (gobs of WRITE/ABORT errors), I'm still occasionally seeing these kernel
> messages (in groups), and I'm not sure if they're benign, or pointing to a
> SAS expander event... or what. I admit, this is my first time dealing with a
> machine with SAS expanders, so I'm a bit out of my depth in diagnosis
> thereof.
>
> Dec 11 16:06:54 ZFS-AF kernel: ses5: da7,pass7: Element descriptor: 'Slot00'
> Dec 11 16:06:54 ZFS-AF kernel: ses5: da7,pass7: SAS Device Slot Element: 1
> Phys at Slot 0
> Dec 11 16:06:54 ZFS-AF kernel: ses5:  phy 0: SAS device type 1 id 0
> Dec 11 16:06:54 ZFS-AF kernel: ses5:  phy 0: protocols: Initiator( None )
> Target( SSP )
> Dec 11 16:06:54 ZFS-AF kernel: ses5:  phy 0: parent 500304801ea2df3f addr
> 5000c500844bd449
>

These look like device arrival notifications.  If you scroll up, do
you see any departure notifications?  They should look like this:

mps0: mpssas_prepare_remove: Sending reset for target ID 10
da0 at mps0 bus 0 scbus0 target 10 lun 0
da0: <ATA Hitachi HUA72201 A39C> s/n       JPW930HQ15H26H detached
mps0: Unfreezing devq for target ID 10
xpt_release_devq(): requested 1 > present 0
(da0:mps0:0:10:0): Periph destroyed

Also, could you post your HBA and expander firmware versions?  For the
HBA, use "sysctl dev.mps.0.firmware_version".  For the expander,
install sg3_utils and do "sg_inq --hex --len=64 ses0".  The firmware
version is the dotted quad at the end.

# sg_inq --hex --len=64 ses0
 00     0d 00 05 02 34 00 40 02  41 49 43 20 43 4f 52 50    ....4. at .AIC CORP
 10     53 41 53 20 36 47 20 45  78 70 61 6e 64 65 72 20    SAS 6G Expander
 20     30 62 30 31 78 33 36 2d  31 2e 31 31 2e 31 2e 31    0b01x36-1.11.1.1
 30     00 20 20 20 20 20 20 20

-Alan