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Rich Ercolani
2ef1ce66f5
Currently, dmu_read_uio_dnode can read 64K of a requested 1M in one loop, get EFAULT back from zfs_uiomove() (because the iovec only holds 64k), and return EFAULT, which turns into EAGAIN on the way out. EAGAIN gets interpreted as "I didn't read anything", the caller tries again without consuming the 64k we already read, and we're stuck. This apparently works on newer kernels because the caller which breaks on older Linux kernels by happily passing along a 1M read request and a 64k iovec just requests 64k at a time. With this, we now won't return EFAULT if we got a partial read. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rich Ercolani <rincebrain@gmail.com> Closes #12370 Closes #12509 Closes #12516
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 12-STABLE and 13-CURRENT.