Re: ZFS native block size changed in recent netbsd-9?

[David Brownlee <abs%absd.org@localhost>]

On Tue, 9 Feb 2021 at 19:13, David Brownlee <abs%absd.org@localhost> wrote:
>
> Has the native disk block size reported via sata devices changed
> recently in netbsd-9?

It has! Test booted a netbsd-9.0_RELEASE and netbsd-9.1_RELEASE
kernels on a sample server (otherwise running netbsd-9.1_STABLE).
To confirm - this is entirely a kernel difference, no change in
userland in the below tests.

netbsd-9.0:

  pool: onyx0
 state: ONLINE
  scan: scrub repaired 0 in 4h45m with 0 errors on Tue Jan 21 00:50:23 2020
config:

        NAME        STATE     READ WRITE CKSUM
        onyx0       ONLINE       0     0     0
          wd1       ONLINE       0     0     0

netbsd-9.1:

  pool: onyx0
 state: ONLINE
status: One or more devices are configured to use a non-native block size.
        Expect reduced performance.
action: Replace affected devices with devices that support the
        configured block size, or migrate data to a properly configured
        pool.
  scan: scrub repaired 0 in 4h45m with 0 errors on Tue Jan 21 00:50:23 2020
config:

        NAME        STATE     READ WRITE CKSUM
        onyx0       ONLINE       0     0     0
          wd1       ONLINE       0     0     0  block size: 512B
configured, 4096B native

Of course, now that I _have_ this information, I'm somewhat
nonplussed. If I'm ever in a position to conventinely rebuild the ZFS
pools on the two affected servers I will, but otherwise I suspect I
park this (reminder - I have another server originally built with a
later kernel version which does not show this issue, as the pool on wd
disks uses 4096 byte block size)

David