152d6fda54
In current zil_commit() process, transaction lwb_tx is assigned in zil_lwb_write_issue(), and is committed in zil_lwb_flush_vdevs_done(). Thus, during lwb write out process, the txg is held in open or quiesing state, until zil_lwb_flush_vdevs_done() is called. If the zil's zio latency is high, it will cause txg_sync_thread() to starve. The goal here is to defer waiting for zil_lwb_flush_vdevs_done to the 'syncing' txg state. That is, in zil_sync(). In this patch, it achieves the goal without holding transaction. A new function zil_lwb_flush_wait_all() is introduced. It waits for the completion of all the zil_lwb_flush_vdevs_done() by given txg. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Prakash Surya <prakash.surya@delphix.com> Signed-off-by: jxdking <lostking2008@hotmail.com> Closes #12321 |
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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.