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dbf6108b4d
Implement support for Linux's RENAME_* flags (for renameat2). Aside from being quite useful for userspace (providing race-free ways to exchange paths and implement mv --no-clobber), they are used by overlayfs and are thus required in order to use overlayfs-on-ZFS. In order for us to represent the new renameat2(2) flags in the ZIL, we create two new transaction types for the two flags which need transactional-level support (RENAME_EXCHANGE and RENAME_WHITEOUT). RENAME_NOREPLACE does not need any ZIL support because we know that if the operation succeeded before creating the ZIL entry, there was no file to be clobbered and thus it can be treated as a regular TX_RENAME. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Pavel Snajdr <snajpa@snajpa.net> Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> Closes #12209 Closes #14070 |
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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 12.2-RELEASE.