7bd04f2d7d
It doesn't make sense for a zvol to use the default system I/O scheduler because it is a virtual device. Therefore, we change the default scheduler to 'noop' for zvols provided that the elevator_change() function is available. This interface has been available since Linux 2.6.36 and appears in the RHEL 6.x kernels. We deliberately do not implement the method for older kernels because it was racy and could result in system crashes. It's better to simply manually tune the scheduler for these kernels. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #1017
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