SVNews r329240

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2018-02-13 19:28:02 - r329240 by markj (markj)

Complete list of files affected by revision r329240:

(Note: At the moment, these links point to ViewVC on They are probably slow. Do not overuse.)

  History   Contents   Diff   MODIFY   /head/sbin/dumpon/dumpon.8  
  History   Contents   Diff   MODIFY   /head/sbin/dumpon/dumpon.c  
  History   Contents   Diff   MODIFY   /head/sbin/savecore/savecore.c  
  History   Contents   Diff   MODIFY   /head/share/man/man5/core.5  
  History   Contents   Diff   MODIFY   /head/sys/conf/NOTES  
  History   Contents   Diff   MODIFY   /head/sys/conf/files  
  History   Contents   Diff   MODIFY   /head/sys/conf/options  
  History   Contents   Diff   MODIFY   /head/sys/kern/kern_shutdown.c  
  History   Contents   Diff   MODIFY   /head/sys/kern/kern_sig.c  
  History   Contents   Diff   MODIFY   /head/sys/kern/subr_compressor.c  
  History   Contents   Diff   MODIFY   /head/sys/sys/compressor.h  
  History   Contents   Diff   MODIFY   /head/sys/sys/kerneldump.h  

Commit message:

Add support for zstd-compressed user and kernel core dumps.

This works similarly to the existing gzip compression support, but
zstd is typically faster and gives better compression ratios.

Support for this functionality must be configured by adding ZSTDIO to
one's kernel configuration file. dumpon(8)'s new -Z option is used to
configure zstd compression for kernel dumps. savecore(8) now recognizes
and saves zstd-compressed kernel dumps with a .zst extension.

Submitted by: cem (original version)
Relnotes: yes
Sponsored by: Dell EMC Isilon
Differential Revision:,


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