Re: ZFS dataset stats

Ahh! Sorry. 12.3-STABLE stable/12-n234444-680eb3fd094

Hmm, looks like it has not bad it back to 12 yet. That said need to look 
at
updating this all to 13 any ways.

On 2022-07-15 11:14, Alan Somers wrote:
> You still haven't told us what version of FreeBSD you're using, but I
> think you're running into this issue, already fixed:
> https://github.com/openzfs/zfs/pull/12097
> 
> On Fri, Jul 15, 2022 at 10:08 AM Zane C. B-H <v.velox@vvelox.net> 
> wrote:
>> 
>> Testing with changing it over one one of the VMs and that fails.
>> 
>> zfs set volmode=geom storage/debian11-1/dsk1.vhd
>> 
>> Even after that ztop and gstat show nothing.
>> 
>> On 2022-07-15 08:14, Oleg Ginzburg wrote:
>> > On Fri, Jul 15, 2022 at 8:05 AM Zane C. B-H <v.velox@vvelox.net>
>> > wrote:
>> >
>> >> So was just looking and for some reason nread etc for the ZFS
>> >> storage
>> >> stats.
>> >>
>> >> Below is a example of a ZFS dataset being used by CBSD to store a
>> >> raw
>> >> disk image,
>> >> one that is running currently, but for some reasonn the R/W stats
>> >> don't
>> >> seem actually update.
>> >>
>> >> kstat.zfs.storage.dataset.objset-0x1d41.nread: 0
>> >> kstat.zfs.storage.dataset.objset-0x1d41.reads: 0
>> >> kstat.zfs.storage.dataset.objset-0x1d41.nwritten: 0
>> >> kstat.zfs.storage.dataset.objset-0x1d41.writes: 0
>> >> kstat.zfs.storage.dataset.objset-0x1d41.dataset_name:
>> >> storage/debian10_test/dsk1.vhd
>> >>
>> >> Is there any way to get ZFS to actually keep these up to date for
>> >> use
>> >> cases
>> >> like this?
>> >
>> > Try to switch default ZFS volmode properties in CBSD from 'dev' to
>> > 'full' ( defaults:
>> > https://github.com/cbsd/cbsd/blob/develop/etc/defaults/zfs.conf ),
>> > e.g:
>> >
>> > cat > ~cbsd/etc/zfs.conf <<EOF
>> > default_ci_zvol_volmode="geom"
>> > default_vm_zvol_volmode="geom"
>> > volmode="geom"
>> > EOF
>> >
>> > in this case, new VMs will be created in a 'geom' mode:
>> >
>> > # cbsd bcreate jname=vm1 vm_os_type=linux
>> > vm_os_profile=CentOS-7-x86_64 vm_ram=1g vm_cpus=1 runasap=1
>> > imgsize=10g
>> >
>> > # zfs get volmode | grep dsk
>> > jails/mybbuilder130/dsk1.vhd
>> >    volmode   default  default
>> > jails/pxe1/dsk1.vhd
>> >    volmode   dev      local
>> > jails/ubvdi1/dsk1.vhd
>> >    volmode   default  default
>> > jails/vm1/dsk1.vhd
>> >    volmode   full     local
>> > jails/windows1/dsk1.vhd
>> >    volmode   default  default
>> >
>> > if you are using cloud/gold images, you may have to delete and get
>> > them again
>>