OpenZFS on Linux and FreeBSD
Go to file
Rob Norris f5ead99f34 zpool create: warn on suboptimal pool layout
Its possible to create pools that are perfectly valid but are perhaps
not the "best" choice for a given set of devices.

An example is a raidz1 of two devices. I have seen inexperienced users
create this because it looks on the surface like a traditional RAID-1,
that is, a mirror. It even appears to work, but presents problems later
when they want to upgrade the drives, and of course does not perform as
well as a mirror.

This changes `zpool create` to reject such "suboptimal" pool layouts,
and suggest a possible better alternative. It checks for raidz and draid
where the number of devices are parity+1, and could be extended in the
future.

It adds a switch, --force=layout, to disable the check and the warning
and return the old behaviour, for those who know what they're doing.

Included is a utility function to work with option flags. The existing
-f switch to `zpool create` is now an alias for `--force=vdevs`.

Signed-off-by: Rob Norris <robn@despairlabs.com>
2023-07-15 22:56:06 +10:00
.github Refine some details for the github actions update 2023-03-16 10:00:14 -07:00
cmd zpool create: warn on suboptimal pool layout 2023-07-15 22:56:06 +10:00
config Linux 6.5 compat: BLK_STS_NEXUS renamed to BLK_STS_RESV_CONFLICT 2023-07-14 16:33:51 -07:00
contrib Update changelog for 2.2 2023-07-13 08:55:12 -07:00
etc Revert "systemd: Use non-absolute paths in Exec* lines" 2023-06-07 11:14:05 -07:00
include Linux 6.5 compat: BLK_STS_NEXUS renamed to BLK_STS_RESV_CONFLICT 2023-07-14 16:33:51 -07:00
lib Fix remount when setting multiple properties. 2023-06-30 08:36:43 -07:00
man zpool create: warn on suboptimal pool layout 2023-07-15 22:56:06 +10:00
module Fix raw receive with different indirect block size. 2023-07-14 16:16:40 -07:00
rpm rpm: Use libtirpc-devel and /usr/lib on SUSE 2023-02-09 11:57:50 -08:00
scripts Fix kmodtool for packaging mainline Linux 2023-03-22 09:22:52 -07:00
tests zpool create: warn on suboptimal pool layout 2023-07-15 22:56:06 +10:00
udev Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore autoconf: use include directives instead of recursing down cmd 2022-05-10 10:18:38 -07:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
AUTHORS zfs_rename: support RENAME_* flags 2022-10-28 09:49:20 -07:00
CODE_OF_CONDUCT.md Documentation corrections 2022-12-22 11:34:28 -08:00
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
META Update META 2023-06-30 13:32:18 -07:00
Makefile.am Process `script` directory for all configs 2022-10-27 16:45:14 -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 README: Update OpenZFS website url 2022-01-06 16:25:01 -08:00
RELEASES.md Add RELEASES.md file 2021-04-02 16:33:40 -07:00
TEST Remove CI builder customization from TEST 2020-03-16 10:46:03 -07:00
autogen.sh Ubuntu 22.04 integration: ShellCheck 2022-11-18 11:24:48 -08:00
configure.ac Add native-deb* targets to build native Debian packages 2022-12-13 17:33:05 -08:00
copy-builtin copy-builtin: add hooks with sed/>> 2022-05-10 10:17:43 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.md

img

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.

codecov coverity

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 12.2-RELEASE.