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Rob Norris
3e7e19e028
In "all pools" mode, pool_iter_refresh() will call zpool_iter(), which will call zpool_refresh_stats() before calling add_pool(). If we already have the pool, this is a different handle, so we just release it and return. Back in pool_iter_refresh(), we then call zpool_stats_refresh() again for our handle on the same pool. All together, this means we're doing two ZFS_IOC_POOL_STATS calls into the kernel for every pool in the system. This isn't wrong, but it does double the pressure on global locks. Instead, we add a new function zpool_refresh_stats_from_handle() that simply copies the pool config and state from one handle to another, and use it to update our handle before we release it in add_pool(), so we only have one call per pool per interval. Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Closes #17807
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.