77943bc1dc
Currently there is an issue where metaslab_fastwrite_unmark() unmarks fastwrites on vdev_t's that have never had fastwrites marked on them. The 'fastwrite mark' is essentially a count of outstanding bytes that will be written to a vdev and is used in syncing context. The problem stems from the fact that the vdev_pending_fastwrite field is not being transferred over when replacing a top-level vdev. As a result, the metaslab is marked for fastwrite on the old vdev and unmarked on the new one, which brings the fastwrite count below zero. This fix simply assigns vdev_pending_fastwrite from the old vdev to the new one so this count is not lost. Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #4267 |
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README.markdown
Native ZFS for Linux!
ZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the Illumos community.
ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers.
Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org