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0ea44e576b
Implementation of DDT pruning introduced verification of DVAs in a block pointer during ddt_lookup() to not by mistake free previous pruned incarnation of the entry. But when writing a new block in zio_ddt_write() we might have the DVAs only from override pointer, which may never have "D" flag to be confused with pruned DDT entry, and we'll abandon those DVAs if we find a matching entry in DDT. This fixes deduplication for blocks written via dmu_sync() for purposes of indirect ZIL write records, that I have tested. And I suspect it might actually allow deduplication for Direct I/O, even though in an odd way -- first write block directly and then delete it later during TXG commit if found duplicate, which part I haven't tested. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #17120 |
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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 13.0-RELEASE.