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- Add old eviction for special and dedup metaslab classes. Those vdevs may be potentially big and fragmented with large metaslabs, while their asynchronous write pattern is not really different from normal class. It seems an omission to not evict old metaslabs from them. - If we have metaslab preload enabled, which means we are not too low on memory, do not evict active metaslabs even if they are not used for some time. Eviction of active metaslabs means we won't be able to write anything until we load them, that may take some time, that is straight opposite to metaslab preload goals. For small systems the memory saving should be less important after recent reduction in number of allocators and so open metaslabs. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #16214 |
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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 any supported branches and releases starting from 12.4-RELEASE.