e860cb0200
This fix removes a dubious optimization in zfs_uiomove_bvec_rq() that saved the iterator contents of a rq_for_each_segment(). This optimization allowed restoring the "saved state" from a previous rq_for_each_segment() call on the same uio so that you wouldn't need to iterate though each bvec on every zfs_uiomove_bvec_rq() call. However, if the kernel is manipulating the requests/bios/bvecs under the covers between zfs_uiomove_bvec_rq() calls, then it could result in corruption from using the "saved state". This optimization results in an unbootable system after installing an OS on a zvol with blk-mq enabled. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tony Hutter <hutter2@llnl.gov> Closes #15351 |
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README.md
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.