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Ameer Hamza
b8610c3d93
With multiple L2ARC devices, headers can be destroyed asynchronously (e.g., during zpool sync) while L2_WRITING is set. The original code destroyed L2HDR before L1HDR, causing ABDs to lose their device association (b_l2hdr.b_dev) when arc_hdr_free_abd() is called. This caused ABDs to be added to the global free-on-write list without device information. When any L2ARC device completed its write and attempted to free these orphaned ABDs, it would panic on ASSERT(!list_link_active(&abd->abd_gang_link)) because the ABD was still part of another device's vdev_queue I/O aggregation gang. Fix by extending l2ad_mtx lock scope to cover L1HDR destruction and reordering to destroy L1HDR before L2HDR when L2_WRITING is set. This ensures arc_hdr_free_abd() can access b_l2hdr.b_dev to properly tag ABDs with their device for deferred cleanup. Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ameer Hamza <ahamza@ixsystems.com> Closes #18093
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.