[cross posting is probably better than muli-posts] Petros Koutoupis wrote: > As I was navigating through the source code for the ZFS file system I saw > that in zvol.c where the ioctls are defined, if a program sends a DKIOCGGEOM > or DKIOCDVTOV, an ENOTSUP (Error Not Supported) is returned. > > You can view this here: > http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/zfs/zvol.c > > My question is, what is an appropriate method to obtain the zpool's volume > size from a C coded application? > I use zprop_get_list and zfs_prop_get form libzfs to read and parse zfs properties. There may be a more direct way, but zprop_get_list appears to be the generic solution.
-- Ian.