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When libzfs checks if the module is loaded or not, it currently reads /proc/modules and searches for a line matching the module name. Unfortunately, if the module is included in the kernel itself (built-in module), then /proc/modules won't list it, so libzfs will wrongly conclude that the module is not loaded, thus making all ZFS userspace tools unusable. Fortunately, all loaded modules appear as directories in /sys/module, even built-in ones. Thus we can use /sys/module in lieu of /proc/modules to fix the issue. As a bonus, the code for checking becomes much simpler. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #851
Native ZFS for Linux! ZFS is an advanced file system and volume manager which was originally developed for Solaris. It has been successfully ported to FreeBSD and now there is a functional Linux ZFS kernel port too. The port currently includes a fully functional and stable SPA, DMU, and ZVOL with a ZFS Posix Layer (ZPL) on the way!
$ ./configure
$ make pkg
To copy the kernel code inside your kernel source tree for builtin compilation:
$ ./configure --enable-linux-builtin --with-linux=/usr/src/linux-...
$ ./copy-builtin /usr/src/linux-...
Full documentation for building, configuring, and using ZFS can be found at: http://zfsonlinux.org