ZFS

ZFS is the default disk-based filesystem used in OSv. ZFS has outstanding features that makes it a perfect fit for the cloud environment, such as self-healing and self-tuning. It was originally developed for Solaris but is now also available in other operating systems such as FreeBSD.

Resources

• The Zettabyte File System (Jeff Bonwick, Matt Ahrens, Val Henson, Mark Maybee, Mark Shellenbaum) (ZFS Internals-Overview-very good paper!)
• ZFS trivia: metaslabs and growing vdevs (Adam Leventhal, 2012)
• ZFS fundamentals: transaction groups (Adam Leventhal, 2012)
• ZFS fundamentals: the write throttle (Adam Leventhal, 2013)
• relationship between ARC and page cache (2010)
• Some insight into the read cache of ZFS - or: The ARC (2009)
• Activity of the ZFS ARC (Brendan Gregg, 2012)
• How many uberblock copies ZFS writes on transaction group commits (2010)
• Reliability Analysis of ZFS - has diagram with ZFS internal data structures.