Date: Fri, 15 Jul 2022 10:14:24 -0600 From: Alan Somers <asomers@freebsd.org> To: "Zane C. B-H" <v.velox@vvelox.net> Cc: Oleg Ginzburg <olevole@olevole.ru>, freebsd-fs <fs@freebsd.org> Subject: Re: ZFS dataset stats Message-ID: <CAOtMX2gimmL82xO-9qxMtiZBONBsHaU%2BWD9zQU4C2R_fzJE-uw@mail.gmail.com> In-Reply-To: <a5ad538d0ae5d1ef2e4a0458f4517ae4@vvelox.net> References: <42b403fd492b631ad14e97b7e8a9778f@vvelox.net> <CAMsb%2BmYJ2Nwd1UCYPrs2RVsSNnaKKGH_u0KVH11M4Qm12RGRvQ@mail.gmail.com> <a5ad538d0ae5d1ef2e4a0458f4517ae4@vvelox.net>
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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 >
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