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1199c3e8fb
L2ARC devices of several terabytes filled with 4KB blocks may take 15 minutes to rebuild. Due to the way L2ARC log reading is implemented it is quite likely that for all that time rebuild thread will never sleep. At least on FreeBSD kernel threads have absolute priority and can not be preempted by threads with lower priorities. If some thread is also bound to that specific CPU it may not get any CPU time for all the 15 minutes. Reviewed-by: Cedric Berger <cedric@precidata.com> Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: George Amanakis <gamanakis@gmail.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Closes #11116 |
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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.
Official Resources
- Documentation - for using and developing this repo
- ZoL Site - Linux release info & links
- Mailing lists
- OpenZFS site - for conference videos and info on other platforms (illumos, OSX, Windows, etc)
Installation
Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.
Contribute & Develop
We have a separate document with contribution guidelines.
We have a Code of Conduct.
Release
OpenZFS is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197
Supported Kernels
- The
METAfile contains the officially recognized supported Linux kernel versions. - Supported FreeBSD versions are 12-STABLE and 13-CURRENT.