Re: Xen DomU zvol disk sizes

[mlelstv%serpens.de@localhost (Michael van Elst)]

sebastian%xenoserver.net@localhost (Sebastian Ponitka) writes:

>Hmm the zdb shows a ashift=12, but it should be 9

>bash-5.3# gpt add -l tankred -s 50G wd0
>/dev/rwd0: Partition 6 added: 49f48d5a-b10e-11dc-b99b-0019d1879648 
>2672300032 104857600
>bash-5.3# zpool create tankred /dev/dk14
>bash-5.3# zdb -l /dev/rdk14
>--------------------------------------------
>LABEL 0
>--------------------------------------------
>     version: 5000
>     name: 'tankred'
>     state: 0
>     vdev_children: 1
>     vdev_tree:
>         type: 'disk'
>         ashift: 12
>         asize: 53682372608



My guess is that wd0 is a 512e disk (4k physical sectors, but emulates
512byte/sector) and that isn't handled consistently. Apparently the
vdev code uses the physical sector size and the zvol code uses the
logical sector size.

Can you please verify that wd0 is such a disk ?