Re: misleading ZFS warning

>  What is underlying pool structure?

 pool: as1
 state: ONLINE
config:

        NAME                           STATE     READ WRITE CKSUM
        as1                            ONLINE       0     0     0
          diskid/DISK-WD-C82MNNSK.eli  ONLINE       0     0     0

one dedicated GELI-encrtypted HDD.

GELI info:

Geom name: diskid/DISK-WD-C82MNNSK.eli
State: ACTIVE
EncryptionAlgorithm: AES-XTS
KeyLength: 128
Crypto: accelerated software
Version: 7
UsedKey: 0
Flags: NONE
KeysAllocated: 1398
KeysTotal: 1398
Providers:
1. Name: diskid/DISK-WD-C82MNNSK.eli
   Mediasize: 6001175121920 (5.5T)
   Sectorsize: 4096
   Mode: r1w1e1



Wednesday, July 22, 2026, 6:12:00 PM, you wrote:

> What is underlying pool structure?
> Zraid/mirror/single disk?

> If zraid, what is the stripesize?

> Regards,
> Ronald

> Van: Anthony Pankov <[email protected]>
> Datum: 22 juli 2026 11:51
> Aan: [email protected]
> Onderwerp: misleading ZFS warning

>> > > Hello,
>> > Doing this:
>> >  zfs create  -b 4096 -o volmode=dev  -V 32G as1/dockerim/dsk.adocker
>> > I've got
>> > Warning: volblocksize (4096) is less than the default minimum block size (16384).
>> To reduce wasted space a volblocksize of 16384 is recommended.
>> > While ashift=12 for this pool I can't understand am I really do something wrong and there will be "wasted space" or this is a misleading warning.
>> > Can somebody enlight this?
>> > -- > Best regards,
>>  Anthony Pankov                         mailto:[email protected]



-- 
Best regards,
Anthony