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Tony Hutter 4a7a04630d zed: Add synchronous zedlets
Historically, ZED has blindly spawned off zedlets in parallel and never
worried about their completion order.  This means that you can
potentially have zedlets for event number 2 starting before zedlets for
event number 1 had finished.  Most of the time this is fine, and it
actually helps a lot when the system is getting spammed with hundreds
of events.

However, there are times when you want your zedlets to be executed
in sequence with the event ID.  That is where synchronous zedlets
come in.

ZED will wait for all previously spawned zedlets to finish before
running a synchronous zedlet.  Synchronous zedlets are guaranteed to be
the only zedlet running.  No other zedlets may run in parallel with a
synchronous zedlet.  Users should be careful to only use synchronous
zedlets when needed, since they decrease parallelism.

To make a zedlet synchronous, simply add a "-sync-" immediately
following the event name in the zedlet's file name:

	EVENT_NAME-sync-ZEDLETNAME.sh

For example, if you wanted a synchronous statechange script:

	statechange-sync-myzedlet.sh

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #17335
2025-09-11 15:58:59 -07:00
.github ci: fix syntax issues in zfs-qemu.yml 2025-09-09 17:05:21 -07:00
cmd zed: Add synchronous zedlets 2025-09-11 15:58:59 -07:00
config Linux 6.17: d_set_d_op() is no longer available 2025-09-09 17:06:55 -07:00
contrib Add allocation profile export and zhack subcommand for import 2025-09-10 15:01:28 -07:00
etc Add templated zfs-mount@.service 2025-07-03 14:24:07 -07:00
include Detect a slow raidz child during reads 2025-09-10 15:31:30 -07:00
lib Detect a slow raidz child during reads 2025-09-10 15:31:30 -07:00
man zed: Add synchronous zedlets 2025-09-11 15:58:59 -07:00
module Prevent scrubbing a read-only pool 2025-09-11 15:58:52 -07:00
rpm cmd: rename arcstat to zarcstat 2025-09-10 15:01:20 -07:00
scripts cmd: rename arcstat to zarcstat 2025-09-10 15:01:20 -07:00
tests zed: Add synchronous zedlets 2025-09-11 15:58:59 -07:00
udev Update 69-vdev.rules.in 2025-05-21 10:05:11 -07:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore Packaging: Auto-generate changelog during configure (#15528) 2023-11-16 08:58:47 -08:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
.mailmap AUTHORS/mailmap: update with new contributors 2025-08-13 15:56:49 -07:00
AUTHORS AUTHORS/mailmap: update with new contributors 2025-08-13 15:56:49 -07:00
autogen.sh Ubuntu 22.04 integration: ShellCheck 2022-11-18 11:24:48 -08:00
CODE_OF_CONDUCT.md Documentation corrections 2022-12-22 11:34:28 -08:00
configure.ac Linux build: handle CONFIG_OBJTOOL_WERROR=y 2025-06-16 08:12:09 -07:00
copy-builtin copy-builtin: add hooks with sed/>> 2022-05-10 10:17:43 -07:00
COPYRIGHT Fix typos 2020-06-09 21:24:09 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Install zarcstat and zarcsummary symlinks in Makefile 2025-09-09 17:05:30 -07:00
META Tag 2.4.0-rc1 2025-08-22 11:27:48 -07:00
NEWS Fix NEWS file 2020-08-26 21:44:41 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md FreeBSD: remove support for FreeBSD < 13.0-RELEASE (#16372) 2024-08-05 16:56:45 -07:00
RELEASES.md Update RELEASES.md LTS release to 2.2 2025-01-17 11:04:36 -05:00
TEST Remove CI builder customization from TEST 2020-03-16 10:46:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -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.