[Bug 215007] aacraid hotswapping not working with ASR-81605Z v2 RAID Controller

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215007

            Bug ID: 215007
           Summary: aacraid hotswapping not working with ASR-81605Z v2
                    RAID Controller
           Product: Base System
           Version: 11.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: projet.info at schroeder.lu
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

I have an ASR-81605Z v2 RAID Controller that I am using in HBA mode.

The controller is detected as:

aacraid0: <Adaptec RAID Controller> port 0xe000-0xe0ff mem
0xdc100000-0xdc1fffff,0xdc280000-0xdc2803ff irq 16 at device 0.0 on pci1
aacraid0: Enable Raw I/O
aacraid0: Enable 64-bit array
aacraid0: using MSI-X interrupts (32 vectors)
aacraid0: New comm. interface type2 enabled
aacraid0: ASR81605Z, aacraid driver 3.2.5-1
aacraidp0 on aacraid0
aacraidp1 on aacraid0
aacraidp2 on aacraid0
aacraidp3 on aacraid0

If I insert one disk:

da0 at aacraidp1 bus 0 scbus1 target 0 lun 0
da0: <ATA ST1000NM0033-9ZM SN04> Fixed Direct Access SPC-4 SCSI device
da0: Serial Number Z1W49QF1
da0: 300.000MB/s transfers
da0: Command Queueing enabled
da0: 953869MB (1953525168 512 byte sectors)

If I insert a second disk:

da0 at aacraidp1 bus 0 scbus1 target 0 lun 0
da0: <ATA ST1000NM0033-9ZM SN04> s/n Z1W49QF1 detached
(da0:aacraidp1:0:0:0): Periph destroyed
da0 at aacraidp1 bus 0 scbus1 target 0 lun 0
da0: <ATA ST1000NM0033-9ZM SN04> Fixed Direct Access SPC-4 SCSI device
da0: Serial Number Z1W49QF1
da0: 300.000MB/s transfers
da0: Command Queueing enabled
da0: 953869MB (1953525168 512 byte sectors)
da1 at aacraidp1 bus 0 scbus1 target 1 lun 0
da1: <ATA ST4000NM0033-9ZM SN04> Fixed Direct Access SPC-4 SCSI device
da1: Serial Number Z1Z9P2E2
da1: 300.000MB/s transfers
da1: Command Queueing enabled
da1: 3815447MB (7814037168 512 byte sectors)

The disk da0 is destroyed an recreated which makes hotswapping impossible.

Under FreeBSD 10.3 hotswapping is working as I should.

Thanks in advance for looking into this.

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