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Alan Somers
b64afa41d5
Ever sincea10d50f999, ZFS has mounted file systems in parallel when importing a pool. It uses a fixed size of 512 for the thread pool. But sincec183d164aa, it has also imported pools in parallel. So the total number of threads at one time is 513 * npools + 1. That can easily exceed the system's limit on the number of threads per process, which will cause one or more pools to be unable to allocate any worker threads, forcing them to fallback to slow serial mounting . To forestall that, manage the threadpool size in /sbin/zpool, not libzfs. Use the same size (512), but divided by the number of pools. This is a backwards-incompatible change to the libzfs abi. Sponsored by: Axcient Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Wilson <gwilson@delphix.com> Signed-off-by: Alan Somers <asomers@FreeBSD.org> Closes #16178
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.