Date: Mon, 7 Aug 95 15:17:32 +0000 From: Andrew.Gordon@net-tel.co.uk To: freebsd-hackers@freebsd.org Subject: Re: patch adding the 'noauto' switch to 'mount' Message-ID: <"MAC-950807161723-18A7*/G=Andrew/S=Gordon/O=Net-Tel Computer Systems Ltd/PRMD=Net-Tel/ADMD=Gold 400/C=GB/"@MHS>
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>>I just got fed up with my DOS partition being mounted automatically >>at boot time, so I wrote a patch which enables the use of the 'noauto' >>flag in /etc/fstab. >> >>For example: /dev/sd0s2 /dos msdos rw,noauto 0 0 >> >>This flag prevents a filesystem from being mounted when a 'mount -a' occurs. >>It works for every kind of fs , since it's defined as a standard >>mount option. > > That's an interesting option, but the "-a" switch stands for "all" - not >"auto". I suppose the first question that comes to mind is: if you don't want >the filesystem mounted with "-a", then why are you putting it in fstab? This reminds me of a problem that I have been having since upgrading to 2.0.5 (actually I did a re-format and clean install). The install left me with an fstab entry for /cdrom which is fine. However, if I should happen to re-boot with an audio CD in the drive, I now get thrown into single-user mode and can't proceed without either supplying a real CD-ROM or commenting out the entry in fstab. Under 2.0 and 9503xx-SNAP, this didn't happen - I just got a rude message and the boot proceeds as normal. Having the entry in fstab was handy in that it auto-mounted the CD if one happened to be in the drive, and if not it still allowed an abbreviated command to mount manually - "mount /cdrom". I haven't yet pulled back my old configuration off tape to see if I have inadvertenly changed somthing else that might affect this behaviour. One answer to your question 'why would you want entries in /etc/fstab" that you don't want mounted by mount -a' is so that you can later do a manual mount with "mount /dos" or similar, without having to remember the slice number etc. (admittedly not too hard to remember in the case of the /dev/cd0).
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