[Bug 240145] [smartpqi][zfs] kernel panic with hanging vdev

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240145

Peter Eriksson <pen at lysator.liu.se> changed:

           What    |Removed                     |Added
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                 CC|                            |pen at lysator.liu.se

--- Comment #3 from Peter Eriksson <pen at lysator.liu.se> ---
Just another (rather worthless, but anyway) datapoint: 

The same thing happened to us on one of our production file servers just this
Monday during prime daytime (1pm). No Scrub running just a normal load of SMB
and NFS traffic (some ~400 SMB clients and ~40 NFS clients). 

FreeBSD kernel: 11.2-RELEASE-p10

Hardware: Dell PowerEdge R730xd with LSI SAS3008 (Dell-branded) HBA and the
DATA pool the error occured in has 12 x 10TN SAS 7200rpm drives in a RAID-Z2
config.

After the reboot no errors could be found via Smartctl or in any logs (other
than the "panic" message on the disk (or any other disk)

The vdev pointed at in the panic message was the one named
"diskid/DISK-7PK8RSLC" below

# zpool status -v DATA
  pool: DATA
 state: ONLINE
  scan: scrub repaired 0 in 83h42m with 0 errors on Tue Jan  8 07:44:05 2019
config:

        NAME                              STATE     READ WRITE CKSUM
        DATA                              ONLINE       0     0     0
          raidz2-0                        ONLINE       0     0     0
            diskid/DISK-7PK784UC          ONLINE       0     0     0
            diskid/DISK-7PK2GT9G          ONLINE       0     0     0
            diskid/DISK-7PK8RSLC          ONLINE       0     0     0
            diskid/DISK-7PK77Z2C          ONLINE       0     0     0
            diskid/DISK-7PK1U91G          ONLINE       0     0     0
            diskid/DISK-7PK2GBPG          ONLINE       0     0     0
          raidz2-1                        ONLINE       0     0     0
            diskid/DISK-7PK1AZ4G          ONLINE       0     0     0
            diskid/DISK-7PK2GEEG          ONLINE       0     0     0
            diskid/DISK-7PK14ARG          ONLINE       0     0     0
            diskid/DISK-7PK7HS5C          ONLINE       0     0     0
            diskid/DISK-7PK2GERG          ONLINE       0     0     0
            diskid/DISK-7PK200TG          ONLINE       0     0     0
        logs
          diskid/DISK-BTHV7146043R400NGN  ONLINE       0     0     0
          diskid/DISK-BTHV715403A9400NGN  ONLINE       0     0     0
        cache
          diskid/DISK-CVCQ72660083400AGN  ONLINE       0     0     0
        spares
          diskid/DISK-7PK1RNVG            AVAIL   
          diskid/DISK-7PK784NC            AVAIL   

errors: No known data errors

# sas3ircu 0 DISPLAY 
Avago Technologies SAS3 IR Configuration Utility.
Version 11.00.00.00 (2015.08.04) 
Copyright (c) 2009-2015 Avago Technologies. All rights reserved. 

Read configuration has been initiated for controller 0
------------------------------------------------------------------------
Controller information
------------------------------------------------------------------------
  Controller type                         : SAS3008
  BIOS version                            : 8.37.00.00
  Firmware version                        : 16.00.04.00
  Channel description                     : 1 Serial Attached SCSI
  Initiator ID                            : 0
  Maximum physical devices                : 543
  Concurrent commands supported           : 9584
  Slot                                    : 5
  Segment                                 : 0
  Bus                                     : 2
  Device                                  : 0
  Function                                : 0
  RAID Support                            : No
...
Device is a Hard disk
  Enclosure #                             : 2
  Slot #                                  : 2
  SAS Address                             : 5000cca-2-51b8-fbb1
  State                                   : Ready (RDY)
  Size (in MB)/(in sectors)               : 9470975/2424569855
  Manufacturer                            : HGST    
  Model Number                            : HUH721010AL4200 
  Firmware Revision                       : LS17
  Serial No                               : 7PK8RSLC
  GUID                                    : N/A
  Protocol                                : SAS
  Drive Type                              : SAS_HDD
...

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