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The output of ZFS channel programs is logged on-disk in the zpool history, and printed by `zpool history -i`. Channel programs can use 10MB of memory by default, and up to 100MB by using the `zfs program -m` flag. Therefore their output can be up to some fraction of 100MB. In addition to being somewhat wasteful of the limited space reserved for the pool history (which for large pools is 1GB), in extreme cases this can result in a failure of `ASSERT(length <= DMU_MAX_ACCESS);` in `dmu_buf_hold_array_by_dnode()`. This commit limits the output size that will be logged to 1MB. Larger outputs will not be logged, instead a entry will be logged indicating the size of the omitted output. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Matthew Ahrens <mahrens@delphix.com> Closes #11194 |
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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 12-STABLE and 13-CURRENT.