/etc/mnttab is zero length - I have done a silly thing Post: 302149104

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Top Forums UNIX for Advanced & Expert Users /etc/mnttab is zero length - I have done a silly thing Post 302149104 by Smiling Dragon on Tuesday 4th of December 2007 10:42:02 PM

12-04-2007

Registered User

/etc/mnttab is zero length - I have done a silly thing

Being the clever-clogs that I am, I have managed to clobber the contents of /etc/mnttab.

It started when I tried to unmount all the volumes in a prticular veritas disk group and neglected to include a suitable grep in my command line, thus attempting to unmount _all_ the filesystems on the server (for loop).

They all came back with a fs busy message so I was presuming no harm done. However, a df to check all was in order came back with no results, likewise running mount.

When I went to look in the mnttab itself I find it's zero length !?! Smilie

Everything appears ok in that the filesystems are still actually mounted and read/write.

If I try a mount or umount I get the message
"mount: Inappropriate ioctl for device"

I suspect a reboot would sort me out but that's a big hammer and I'd rather get to the bottom of it.

What have I done and how in the world do I fix it?

Running solaris 10 on a T2000, fairly recent patches applied. Bugger all running aside from base OS and SAN kit.

Smiling Dragon

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LEARN ABOUT LINUX

virtual-filesystems

virtual-filesystems(7)					 Miscellaneous Information Manual				    virtual-filesystems(7)

NAME

       virtual-filesystems - event signalling that virtual filesystems have been mounted

SYNOPSIS

       virtual-filesystems [ENV]...

DESCRIPTION

       The  virtual-filesystems  event	is  generated  by  the mountall(8) daemon after it has mounted all virtual filesystems listed in fstab(5).
       mountall(8) emits this event as an informational signal, services and tasks started or stopped by this event will do so	in  parallel  with
       other activity.

       This event is typically used by services that must be started in order to mount other filesystems.  When this event occurs, common filesys-
       tems such as /usr may not be mounted.  For most normal services the filesystem(7) event is sufficient.

EXAMPLE

       A service that wishes to be running once virtual filesystems are mounted might use:

	      start on virtual-filesystems

SEE ALSO

       mounting(7) mounted(7) local-filesystems(7) remote-filesystems(7) all-swaps(7) filesystem(7)

mountall							    2009-12-21						    virtual-filesystems(7)

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