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Encrypted blocks can have up to 2 DVA's, as the third DVA is reserved for the salt+IV. However, dmu_write_policy() allows non-encrypted blocks (e.g. DMU_OT_OBJSET) inside encrypted datasets to request and allocate 3 DVA's, since they don't need a salt+IV (they are merely authenicated). However, if such a block becomes a gang block, the gang code incorrectly limits the gang block header to 2 DVA's. This leads to a "NDVAs inversion", where a parent block (the gang block header) has less DVA's than its children (the gang members), causing an assertion failure in zio_write_gang_member_ready(). This commit addresses the problem by only restricting the gang block header to 2 DVA's if the block is actually encrypted (and thus its gang block members can have at most 2 DVA's). Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Matthew Ahrens <mahrens@delphix.com> Closes #14250 Closes #14356 |
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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.
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.