7fc38a82d4
`zvol_disk_open()` waits for up to `zfs_vdev_open_timeout_ms` (1 second by default) (e.g. if the block device does not exist). While in this loop, it calls `schedule_timeout()`. The problem is that `schedule_timeout()` may not actually cause the thread to go off-CPU. Per the "documentation" (comment in the source code): ``` * The function behavior depends on the current task state: * %TASK_RUNNING - the scheduler is called, but the task does not sleep * at all. That happens because sched_submit_work() does nothing for * tasks in %TASK_RUNNING state. ``` In my experience, `schedule_timeout()` never sleeps from this code path. This is especially noticeable if `zfs_vdev_open_timeout_ms` has been increased from its default. This commit uses `msleep()` to actually sleep. Note that this is how it was before https://github.com/openzfs/zfs/pull/7629. Signed-off-by: Matthew Ahrens <mahrens@delphix.com> |
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| CODE_OF_CONDUCT.md | ||
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| LICENSE | ||
| META | ||
| Makefile.am | ||
| NEWS | ||
| NOTICE | ||
| README.md | ||
| RELEASES.md | ||
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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 12.4-RELEASE.