[Bug 251200] ZFS reports errors on 11.4 release but no problem when kernel from 11.3 p6

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251200

            Bug ID: 251200
           Summary: ZFS reports errors on 11.4 release but no problem when
                    kernel from 11.3 p6
           Product: Base System
           Version: 11.4-RELEASE
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: usb
          Assignee: usb at FreeBSD.org
          Reporter: tscott3 at yahoo.com

Created attachment 219755
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=219755&action=edit
sysctl_freebsd_11.3-p6.

I have a 4 drive bay connected via USB. When moving files ZFS goes offline due
to errors. When i boot using 11.3 kernel, I see no errors.

storageZFS01:/usr/src % sudo zpool status -xv 
  pool: pool-4diskusb
 state: UNAVAIL
status: One or more devices are faulted in response to IO failures.
action: Make sure the affected devices are connected, then run 'zpool clear'.
   see: http://illumos.org/msg/ZFS-8000-HC
  scan: resilvered 415M in 0 days 00:00:18 with 0 errors on Fri Oct 23 17:32:08
2020
config:

        NAME                                          STATE     READ WRITE
CKSUM
        pool-4diskusb                                 UNAVAIL      0     5    
0
          raidz1-0                                    UNAVAIL      0    82    
0
            7397879795181442362                       REMOVED      0     0    
0  was /dev/gptid/907411a3-9e77-8241-9087-cf99188d26b5
            15969437942693575981                      REMOVED      0     0    
0  was /dev/gptid/b0a34679-b952-cf48-a4b1-ca94cc7c059d
            15044109830538470349                      REMOVED      0     0    
0  was /dev/gptid/2af2eb73-b574-cb4f-8222-570306f245d1
            16673074538021778888                      REMOVED      0     0    
0  was /dev/gptid/da29187f-46d5-8741-9a94-9f9a19e36f18
        logs
          gptid/24a6f1f4-51c0-11e9-a91b-d4c9efdb3ca3  ONLINE       0     0    
0
        cache
          gptid/24abb9e1-51c0-11e9-a91b-d4c9efdb3ca3  ONLINE       0     0    
0

errors: Permanent errors have been detected in the following files:

        pool-4diskusb/plexIII:<0x0>
        pool-4diskusb/plexIII:<0x39a0b>
        pool-4diskusb/plexIII:<0x39a0d>
        pool-4diskusb/plexIII:<0x39a0e>
        pool-4diskusb/plexIII:<0x39a10>
        pool-4diskusb/plexIII:<0x39a11>
        pool-4diskusb/plexIII:<0x39a13>
        pool-4diskusb/plexIII:<0x39a14>
        pool-4diskusb/plexIII:<0x39a16>
        pool-4diskusb/plexIII:<0x6aa>

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