[2788] in RedHat Linux List
Re: Mount Message
daemon@ATHENA.MIT.EDU (Wierdl Mate)
Tue Nov 5 13:28:20 1996
To: "Hal L. DeVore Jr." <hdevore@crow.bmc.com>
cc: redhat-list@redhat.com
In-reply-to: Your message of "Tue, 05 Nov 1996 09:36:18 CST."
<199611051536.JAA06193@erehwon.bmc.com>
Date: Tue, 05 Nov 1996 13:23:02 -0600
From: Wierdl Mate <matyi@wierdlmpc.msci.memphis.edu>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
> kskhater@qatar.net.qa said:
> > "/dev/hdb2 has reached maximum mount count"
> > I get that with other hd devices.
>
> Since Linux and UNIXes cache data that is written to disk there are
> mechanisms in place to help ensure that everything got written before the
> system went down. If you go thru normal shutdown everything gets flushed
> out and the filesystem gets marked as clean and unmounted. If your system
> locks up, loses power, or in some other way fails to shutdown normally then
> the filesystem isn't "clean" at boot time and the fsck program that matches
> the filesystem type is run to verify structural information and cleanup
> potential problems.
>
> Then, just as a final check for latent damage, even if you do shutdown
> cleanly every single time a "number of times this filesystem has been
> mounted since last fsck" count is kept. If that exceeds a value (the
> maxmimum mount count) then fsck is run regardless of the cleanliness state
> and the count is reset.
>
> At least that's how it's supposed to work. Any other behavior (like
> reporting maximum mount count reached EVERY time you boot) indicates a
> problem.
>
> Hal DeVore (hdevore@bmc.com)
The default maximum mount count seems to be 20. When I reach that I
get the message the original poster got. He said though in a later
message that only the root (boot?) partition is scanned and repaired by fsck
automatically at boot time. So if I get a message about a nonroot
partition's mount count, I have to run fsck manually.
So what is the deal, and where does one reads about this?
Thanks for your thorough response.
Mate
M\'at\'e Wierdl
Department of Mathematical Sciences
University of Memphis,
E-mail: matyi@moni.msci.memphis.edu
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