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Hermes SMTP Server) with ESMTPA ID 562b56eca66319da0257e7876cb45201; Fri, 12 Jan 2024 07:28:54 +0000 (UTC) From: Mark Millard Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.300.61.1.2\)) Subject: Re: noatime on ufs2 Message-Id: Date: Thu, 11 Jan 2024 23:28:43 -0800 To: "Rodney W. Grimes" , Current FreeBSD X-Mailer: Apple Mail (2.3774.300.61.1.2) References: X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.50 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; MV_CASE(0.50)[]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; TO_DN_ALL(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_TWO(0.00)[2]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; FREEMAIL_FROM(0.00)[yahoo.com]; FROM_HAS_DN(0.00)[]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; MLMMJ_DEST(0.00)[freebsd-current@freebsd.org]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.66.148:from]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[98.137.66.148:from] X-Rspamd-Queue-Id: 4TBCp11g2Wz4MjD Rodney W. Grimes wrote on Date: Thu, 11 Jan 2024 17:15:19 UTC : > > Am 2024-01-10 22:49, schrieb Mark Millard: > >=20 > > > I never use atime, always noatime, for UFS. That said, I'd never=20= > > > propose > > > changing the long standing defaults for commands and calls. I'd = avoid: > >=20 > > [good points I fully agree on] > >=20 > > There's one possibility which nobody talked about yet... changing = the=20 > > default to noatime at install time in fstab / zfs set. >=20 > Perhaps you should take a closer look at what bsdinstall does > when it creates a zfs install pool and boot environment, you > might just find that noatime is already set everywhere but > on /var/mail: >=20 > /usr/libexec/bsdinstall/zfsboot:: ${ZFSBOOT_POOL_CREATE_OPTIONS:=3D-O = compress=3Dlz4 -O atime=3Doff} > /usr/libexec/bsdinstall/zfsboot: /var/mail atime=3Don >=20 > >=20 > > I fully agree to not violate POLA by changing the default to noatime = in=20 > > any FS. I always set noatime everywhere on systems I take care = about, no=20 > > exceptions (any user visible mail is handled via maildir/IMAP, not=20= > > mbox). I haven't made up my mind if it would be a good idea to = change=20 > > bsdinstall to set noatime (after asking the user about it, and later=20= > > maybe offer the possibility to use relatime in case it gets=20 > > implemented). I think it is at least worthwile to discuss this=20 > > possibility (including what the default setting of bsdinstall should = be=20 > > for this option). >=20 > Little late... iirc its been that way since day one of zfs support > in bsdinstall. >=20 > > --=20 > > http://www.Leidinger.net Alexander@Leidinger.net: PGP = 0x8F31830F9F2772BF > > http://www.FreeBSD.org netchild@FreeBSD.org : PGP 0x8F31830F9F2772BF The UFS based snapshots are more of a mix. The one that I just dd'd to media has: # more /etc/fstab # Custom /etc/fstab for FreeBSD embedded images /dev/ufs/rootfs / ufs rw 1 = 1 /dev/msdosfs/EFI /boot/efi msdosfs rw,noatime = 0 0 tmpfs /tmp tmpfs rw,mode=3D1777 0 = 0 /dev/label/growfs_swap none swap sw 0 = 0 So the UFS does not have noatime set up for its mount but the msdosfs does. =3D=3D=3D Mark Millard marklmi at yahoo.com