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share/man/man4/geom.4
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||||
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||||
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
.\" SUCH DAMAGE. | .\" SUCH DAMAGE. | ||||
.\" | .\" | ||||
.Dd July 26, 2023 | .Dd October 6, 2023 | ||||
.Dt GEOM 4 | .Dt GEOM 4 | ||||
.Os | .Os | ||||
.Sh NAME | .Sh NAME | ||||
.Nm GEOM | .Nm GEOM | ||||
.Nd "modular disk I/O request transformation framework" | .Nd "modular disk I/O request transformation framework" | ||||
.Sh SYNOPSIS | .Sh SYNOPSIS | ||||
.Cd options GEOM_BDE | .Cd options GEOM_BDE | ||||
.Cd options GEOM_CACHE | .Cd options GEOM_CACHE | ||||
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or | or | ||||
.Dq mediasize | .Dq mediasize | ||||
for the provider. | for the provider. | ||||
.It | .It | ||||
Examine the rank number of the provider's geom. | Examine the rank number of the provider's geom. | ||||
.It | .It | ||||
Examine the method name of the provider's geom. | Examine the method name of the provider's geom. | ||||
.El | .El | ||||
.Pp | |||||
Tasting is controlled by the | |||||
.Va kern.geom.notaste | |||||
sysctl. | |||||
To disable tasting, set the sysctl to 1, to | |||||
re-enable tasting, set the sysctl to 0. | |||||
.It Em ORPHANIZATION | .It Em ORPHANIZATION | ||||
is the process by which a provider is removed while | is the process by which a provider is removed while | ||||
it potentially is still being used. | it potentially is still being used. | ||||
.Pp | .Pp | ||||
When a geom orphans a provider, all future I/O requests will | When a geom orphans a provider, all future I/O requests will | ||||
.Dq bounce | .Dq bounce | ||||
on the provider with an error code set by the geom. | on the provider with an error code set by the geom. | ||||
Any | Any | ||||
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