Date: Mon, 2 Sep 2024 18:27:36 -0600 From: Bob Proulx <bob@proulx.com> To: stable@freebsd.org Subject: Re: mount -u removes "noatime" Message-ID: <20240902181513360947654@bob.proulx.com> In-Reply-To: <202409030005.48305xQw024483@donotpassgo.dyslexicfish.net> References: <202409020139.4821dOrY070960@donotpassgo.dyslexicfish.net> <ZtX18qSceQMgQu3o@kib.kiev.ua> <202409030005.48305xQw024483@donotpassgo.dyslexicfish.net>
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Jamie Landeg-Jones wrote:
> Konstantin Belousov wrote:
> > This is how mount update works. How otherwise would you remove noatime
> > from the options? It seems to be true for other 'flag' options as well.
>
> mount -u -o atime works.
>
> Thanks for the clarification. It seems counterintuitive to me though.
TIL that I should always use either current or fstab.
mount -u -o current /
Or
mount -u -o fstab /
And then make modifications from those references.
mount -u -o current,noatime /
Or
mount -u -o fstab,noatime /
> As it stands, how do we preserve atime status without scripting
> around it? Maybe at least the manual page should make this clearer?
I want to think that using -o current and then making modifications to
current seems to be one possible way. But the man page also says,
"When this option [snapshot] is used, all other options are ignored."
So this shouldn't work.
mount -u -o current,snapshot ...
I don't have a system to test this type of snapshot upon.
Bob
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