[Bug 253954] kernel: g_access(958): provider da8 has error 6 set

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253954

            Bug ID: 253954
           Summary: kernel: g_access(958): provider da8 has error 6 set
           Product: Base System
           Version: 12.1-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: wvermeylen at nl.team.blue

Hey,

I am encountering a (possible) bug with FreeBSD which we tried to solve for the
past few years with no success.

When a disk fails and a new disk is being inserted in our server, it is not
correctly being detected by the system leaving the following results in geom:

```
Geom name: da8
Providers:
1. Name: da8
   Mediasize: 8001563222016 (7.3T)
   Sectorsize: 512
   Stripesize: 4096
   Stripeoffset: 0
   Mode: r0w0e0
   wither: (null)
```

Weirdly enough when we reboot the system, the disk is fine and is fully being
detected like normally.

While the disk is having this issue, we are left with a system that can't do
anything with the disk. We can't turn on the disk indicator through the sas
controller, we can't add it to zfs and trying to reset it with camcontrol is
also not giving any results.

We did see the following pop up when we try to add the disk to zfs anyway:

```
kernel: g_access(958): provider da8 has error 6 set
```

to me it almost looks like it somehow holds on to the old disk and therefor
can't fully detect the new one until you reboot and therefor flush everything.

>From what I remember we started to have this bug after we upgraded from 10.3 to
11.2 and it continued on 12.1 and 12.2 now

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