Date: Tue, 09 Jan 2024 06:23:15 -0600 From: robert@rrbrussell.com To: freebsd-current@freebsd.org Subject: Re: noatime on ufs2 Message-ID: <1173b407-cb6f-4e21-af87-4f1755bfb292@app.fastmail.com> In-Reply-To: <ZZ0kKaeE4OiCOXXx@int21h> References: <ZZqmmM-6f606bLJx@int21h> <CAGMYy3vsSD7HHtGxYXJn%2Busr8GCOd-0Xe1crs-Nx=qw-bYJ6HA@mail.gmail.com> <ZZ0kKaeE4OiCOXXx@int21h>
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On Tue, Jan 9, 2024, at 04:47, void wrote: > On Mon, Jan 08, 2024 at 12:41:02PM -0800, Xin LI wrote: >>On Sun, Jan 7, 2024 at 5:27 AM void <void@f-m.fm> wrote: >> >>> Hi, >>> >>> Does /var/mail still need atime? >>> >>> I've installed a ufs2-based -current main-n267425-aa1223ac3afc on >>> rpi4/8BG which installs into one / . If it's mounted with noatime, >>> will it have consequences for /var/mail ? >> >> >>It doesn't matter if you don't normally receive emails locally (nowadays, >>it's rare). > > I read the periodic ones locally > >>If you do receive emails locally, it depends on what application(s) that >>you are using. > > In this type of context it'll be either exim or dma with mutt used for reading > the emails. It'll be in whatever the default format is (mbox?) set mbox_type=Maildir forces Mutt to use the Maildir format. I remember one or more of Postfix, Procmail, Mutt, and Dovecot assuming the Maildir format for any folder or spool file that ended in a /. > >>Most applications nowadays check both mtime and atime plus >>sizes of the mailbox file and do not rely on atime (because they saved the >>previous mtime). Without atime updates, some application may claim that >>you have new mail when the mailbox is not empty when they first start. >> >>That's said, if I were you and I'm using some flash based storage (with rpi >>it's highly likely) regardless if I'm using mail locally; most of the time >>the data is not really useful for anything, and it does increase the wear >>of your storage. > > Good to know. When installing, the opportunity to define partitions > didn't arise because the image was installed by dd to > media that will run the system (in this case a hard disk) > > I was concerned that email might not work right without atime. > So far, it seems to be working OK. > > My fstab in part looks like this: > > /dev/ufs/rootfs / ufs rw,noatime,async 1 1 > > (async is fine because the system won't be used for data that > needs to be kept locally, and it's connected to a UPS) > --help
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