Rob Norris 3abf72b251 dnode: add dn_dirtycnt, count of number of txgs this dnode is dirty on
Bumped when we take the dirty hold in dnode_setdirty(), dropped when the
dnode is finally cleaned up after sync in dnode_rele_task() or
userquota_updates_task().

This gives us a way to check if the dnode is dirty on any txg without
having to rely on outside information (eg presence on a dirty list),
which has been a rich source of bugs in the past.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Suggested-by: Robert Evans <evansr@google.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Robert Evans <evansr@google.com>
Reviewed-by: Adam Moss <c@yotes.com>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16297
Closes #17652
Closes #17658
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2025-07-03 14:24:07 -07:00
2025-05-21 10:05:11 -07:00
2022-12-22 11:34:28 -08:00
2020-06-09 21:24:09 -07:00
2018-05-29 16:00:33 -07:00
2025-08-11 16:30:09 -07:00
2020-08-26 21:44:41 -07:00
2018-05-29 16:00:33 -07:00
2020-03-16 10:46:03 -07:00

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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.

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Official Resources

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 META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are any supported branches and releases starting from 13.0-RELEASE.
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