So, what is going on here?
Yggdrasil.192.168.2.177 changes in mounted filesystems:
8c8
< freenas-boot/ROOT/FreeNAS-9.3-STABLE-201503270027 / zfs rw,noatime,nfsv4acls 0 0
---
> freenas-boot/ROOT/FreeNAS-9.3-STABLE-201504100216 / zfs rw,noatime,nfsv4acls 0 0
Yggdrasil.192.168.2.177 kernel log messages:
> vboxdrv: fAsync=0 offMin=0x35c offMax=0xdf4
> pid 2014 (syslog-ng), uid 0: exited on signal 6 (core dumped)
> (da2:mps0:0:2:0): READ(10). CDB: 28 00 30 9f 14 e0 00 00 88 00
> (da2:mps0:0:2:0): CAM status: SCSI Status Error
> (da2:mps0:0:2:0): SCSI status: Check Condition
> (da2:mps0:0:2:0): SCSI sense: MEDIUM ERROR asc:11,0 (Unrecovered read error)
> (da2:mps0:0:2:0): Info: 0x309f14f8
> (da2:mps0:0:2:0): Error 5, Unretryable error
> pid 3906 (syslog-ng), uid 0: exited on signal 6 (core dumped)
> GEOM_ELI: Device da2p1.eli destroyed.
> FreeBSD 9.3-RELEASE-p13 #3 r281084+fbfa186: Thu Apr 9 19:18:25 PDT 2015
> CPU: Intel(R) Core(TM) i3-2130 CPU @ 3.40GHz (3400.09-MHz K8-class CPU)
> avail memory = 33129824256 (31595 MB)
> SMP: AP CPU #2 Launched!
> Timecounter "TSC-low" frequency 1700046116 Hz quality 1000
> Trying to mount root from zfs:freenas-boot/ROOT/FreeNAS-9.3-STABLE-201504100216 []...
> vboxdrv: fAsync=0 offMin=0x318 offMax=0xe10
> pid 2016 (syslog-ng), uid 0: exited on signal 6 (core dumped)
-- End of security output --
Yggdrasil.192.168.2.177 changes in mounted filesystems:
8c8
< freenas-boot/ROOT/FreeNAS-9.3-STABLE-201503270027 / zfs rw,noatime,nfsv4acls 0 0
---
> freenas-boot/ROOT/FreeNAS-9.3-STABLE-201504100216 / zfs rw,noatime,nfsv4acls 0 0
Yggdrasil.192.168.2.177 kernel log messages:
> vboxdrv: fAsync=0 offMin=0x35c offMax=0xdf4
> pid 2014 (syslog-ng), uid 0: exited on signal 6 (core dumped)
> (da2:mps0:0:2:0): READ(10). CDB: 28 00 30 9f 14 e0 00 00 88 00
> (da2:mps0:0:2:0): CAM status: SCSI Status Error
> (da2:mps0:0:2:0): SCSI status: Check Condition
> (da2:mps0:0:2:0): SCSI sense: MEDIUM ERROR asc:11,0 (Unrecovered read error)
> (da2:mps0:0:2:0): Info: 0x309f14f8
> (da2:mps0:0:2:0): Error 5, Unretryable error
> pid 3906 (syslog-ng), uid 0: exited on signal 6 (core dumped)
> GEOM_ELI: Device da2p1.eli destroyed.
> FreeBSD 9.3-RELEASE-p13 #3 r281084+fbfa186: Thu Apr 9 19:18:25 PDT 2015
> CPU: Intel(R) Core(TM) i3-2130 CPU @ 3.40GHz (3400.09-MHz K8-class CPU)
> avail memory = 33129824256 (31595 MB)
> SMP: AP CPU #2 Launched!
> Timecounter "TSC-low" frequency 1700046116 Hz quality 1000
> Trying to mount root from zfs:freenas-boot/ROOT/FreeNAS-9.3-STABLE-201504100216 []...
> vboxdrv: fAsync=0 offMin=0x318 offMax=0xe10
> pid 2016 (syslog-ng), uid 0: exited on signal 6 (core dumped)
-- End of security output --