Date: Sat, 23 Dec 2023 07:14:29 -0800 From: Enji Cooper <yaneurabeya@gmail.com> To: Xin LI <delphij@freebsd.org> Cc: src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: 906748d208d3 - main - newsyslog(8): Add option to globally override compression method. Message-ID: <010500A1-E327-47D3-BFD1-141D0C828FE3@gmail.com> In-Reply-To: <202312230653.3BN6r6Fa021310@gitrepo.freebsd.org> References: <202312230653.3BN6r6Fa021310@gitrepo.freebsd.org>
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> On Dec 22, 2023, at 22:53, Xin LI <delphij@freebsd.org> wrote: > > The branch main has been updated by delphij: > > URL: https://cgit.FreeBSD.org/src/commit/?id=906748d208d356a59538dc009a8ad5db040968d9 > > commit 906748d208d356a59538dc009a8ad5db040968d9 > Author: Xin LI <delphij@FreeBSD.org> > AuthorDate: 2023-12-23 06:46:33 +0000 > Commit: Xin LI <delphij@FreeBSD.org> > CommitDate: 2023-12-23 06:46:33 +0000 > > newsyslog(8): Add option to globally override compression method. > > Historically, newsyslog compressed rotated log files to save disk space. > This was useful in the early days. However, with modern file systems like > ZFS offering native compression, and with the availability of larger hard > drives, the benefits of additional compression have become less significant. > This is particularly true considering the inconvenience of decompressing > log files when searching for specific patterns. > > Additionally, the original implementation of compression methods was not > future-proof. As a result, we have redefined the J, X, Y, Z flags to > signify "treat the file as compressible" rather than "compress the file > with that specific method." > > A new command-line option, -c, has been introduced to allow overriding > these settings in a more future-proof way. The available choices are: > > * none - do not compress, regardless of flag. > * legacy - historical behavior: J=bzip2, X=xz, Y=zstd, Z=gzip. > * bzip2, xz, zstd, gzip - apply the specified compression method. > > Currently, the default is set to 'legacy' to preserve historical behavior. > However, our intention is to change this default to 'none' in FreeBSD 15.0. > > Additionally, this update changes the default settings for zstd to use > multithreading and long-range options, better aligning with its intended > use. > > Inspired by D42961 . > > Reviewed by: debdrup (earlier version, mdoc(7)) > MFC after: 1 week > Differential Revision: https://reviews.freebsd.org/D43165 Relnotes: yes ?
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